Biology capsule for SSC CGL by StudyIQ

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By Dr. Gaurav Garg (Faculty General Science)
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 CELL (CYTOLOGY)
Plant cell Animal cell
Cell wall is present
Centrosome is absent
Cell wall is absent
Centrosome is present
Cell wall Cell Membrane
Found only in plant cells
Freely permeable
It is dead
Found in both plant and animal cells
Semi-permeable
It is living
Protoplasm Cytoplasm
Present inside the cell & bounded by
cell plasma membrane
It contains nucleus
Present in between plasma
membrane & nuclear membrane.
It does not contain nucleus
Nucleus Nucleolus
It is present inside the cell.
It controls all the cellular activities.
Present inside the nucleus.
Takes part in formation of ribosomes.
Chromosomes Centrosomes
Found inside the nucleus
Carry genetic information
Found in the cytoplasm near the
external surface of nucleus.
Initiates cell division in animal cells
ANIMAL CELL

1. Mitochondria: power house of the cell, helps in cellular respiration.
2. Ribosomes: protein synthesis.
3. Golgi bodies: secretion of enzymes, formation of cell wall in plant cells.
4. Lysosomes: suicidal bags of the cell which destroy the worn-out cells by
producing enzymes.
5. Plastids: chloroplast + chromoplast (fruits, flowers) + leucoplast (colourless).
6. Vacuole: to maintain turgidity in plant cell.
7. Nucleus: controlling centre of the cell.
On the basis of presence and absence of well-defined membrane bound structure,
the cell is classified as: prokaryotes (e.g. bacteria, fungi) and eukaryotes (e.g. plant &
animal cell).
Cell Division- division of a parent cell to produce daughter cells.

 TISSUE (HISTOLOGY)
1. Meristematic tissue: Helps in growth of plants.
2. Permanent tissue: the newly formed cells of the meristematic tissue get
matured & are differentiated into permanent tissue.
3. Parenchyma: Helps in storage of food. Parenchyma with chloroplasts are
called chlorenchyma and helps in photosynthesis.
4. Collenchyma & Sclerenchyma: provides mechanical support.
5. Xylem: It conducts water & minerals from root to other parts of the plant.
Phloem: Conducts prepared food from leaves to the other parts of plant.

1. Epithelial tissue: covers the external surface as well as internal lining of the
organs. They are classified according to the shape of cell.
2. Connective tissue: it joins and support various parts of the body.
• Areolar: present under the skin, acts as packing material for the organs.
Tendon Ligament
It attaches muscles to bones
Formed of white fibrous tissue.
It is present in the white matter of
brain & spinal cord
Connects bone to bone.
Formed of yellow elastic fibre
It is present in the sympathetic
nervous system.
• Adipose: stores reserved food (fats), acts as an insulator.
• Skeletal: forms endoskeleton of vertebrates.
Bone Cartilage
It is brittle
Cells called osteocytes are arranged in
a concentric manner
Covered by periosteum
It is elastic.
Cells called chondricytes are arranged
in groups of 2 or 4.
Covered by perichondrium.
 Fluid: help in transportation of oxygen, carbondioxide, nutrients & remove
waste materials.
a. Blood: RBC (Erthrocytes without nucleus & mitochondria) + WBC
(defense) + platelets (thrombocytes: contain nucleus, helps in
clotting of blood).
b. Lymph: colourless fluid without RBC & haemoglobin, produced by
spleen. All interexchanges of nutrients & waste products between
blood & tissue takes place through lymph only.
3. Muscular tissue:
Smooth Striped Cardiac
Involuntary Voluntary Involuntary
Contract slowly & never
fatigued
Contract faster & get
fatiqued soon
Contract quickly & never
get fatiqued.
Found in alimentary
canal, urinary bladder
Found in limbs Found in wall of heart,
Smallest muscle: stapedius located in middle ear (length 1.27mm).

Largest muscle: buttocks
Strongest muscle: jaw. Your jaw bite can be as much as 2000 N per second.
Longest muscle: Sartorius muscle is the muscle of anterior hip & thigh group that
is connected to the ilium & the tibia.
4. Nervous tissue:
 Neurons are cells that conduct nerve impulses, or action potentials, across
their membrane to the next neuron.
 They possess a large cell body (soma), with cell projections
called dendrites and an axon.
 Dendrites are thin, branching projections that receive electrochemical
signalling (neurotransmitters) to create a change in voltage in the cell.
 Axons are long projections that carry the action potential away from the
cell body toward the next neuron.
 The bulb-like end of the axon, called the axon terminal, is separated from
the dendrite of the following neuron by a small gap called a synapse.
 When the action potential travels to the axon terminal, neurotransmitters
are released across the synapse and bind to the post-synaptic receptors,
continuing the nerve impulse.[

 RESPIRATORY SYSTEM
 Human respiratory system has
nostrils, nasal cavities, pharynx,
trachea, bronchi, bronchioles, alveoli
and lungs.
 Pleura: the protective covering of
lungs.
 The part of trachea concerned with
sound- larynx.
 The part of brain where respiratory
centre is located- Medulla Oblongata.
Respiration is a 2 step process. First step is breathing, leading to exchange of gases
and second step is oxidation of food molecules in the cell accompanied with release
of energy.
The glucose is broken down into pyruvic acid by the process of glycolysis in the
cytoplasm without utilising oxygen. Pyruvate enters into mitochondria to pass
through Kreb’s cycle in aerobic respiration utilising oxgen & producing ATP
molecules.
C6H12O6 + 6O2 -> 6CO2 + 6H2O + 686 Kcal
After glycolysis, pyruvate gets converted either into ethyl alcohol as in bacteria or
yeast or into lactic acid as in muscles of man. This is Anaerobic respiration.
C6H12O6 -> 2C2H5OH + 2CO2 + 50 Kcal
• Respiration in plants: stomata in leaves, root hairs in roots & lenticels in the bark
of stem and roots helps in gaseous exchange through simple process of diffusion.
• Aquatic animals like fishes take oxygen dissolved in water and respire through
gills.
• In earthworm, skin acts as respiratory organ.
• Land animals have lungs as the main respiratory organ.
• Insects show tracheal respiration which takes place through a network of air
tubes called trachea.

 NUTRITION
Autotrophic nutrition:
• Photosynthesis is the process which converts solar energy to chemical energy.
• Light reaction produces oxygen, ATP and NAPDH.
• During dark reaction, NADPH and ATP molecules produced during light reaction
are utilised for synthesis of carbohydrate from CO2 & H2O.
• Light, temperature, CO2 & H2O affect the rate of photosynthesis.
Heterotrophic nutrition:
• Parasitic- parasities live on or inside the host & obtain food synthesised by its
living host.
• Saprophytic nutrition- saprophytes obtain nutrients from dead & decaying
matter.
• Holozoic- feeding of complex organic matter by ingestion, which is subsequently
digested, absorbed & assimilated.
Amoeba obtains its food by the process of phagocytosis and shows holozoic mode.
 DIGESTIVE SYSTEM
The alimentary canal of man consists of buccal cavity, oesophagus, stomach,
duodenum, ileum (small intestines), colon (large intestines) and rectum.

The digestive process begins in the mouth. Food is partly broken down by the
process of chewing and by the chemical action of salivary enzymes that break down
starches into smaller molecules.
After being chewed and swallowed, the food enters the oesophagus. The
oesophagus is a long tube that runs from the mouth to the stomach. It uses
rhythmic, wave-like muscle movements (called peristalsis) to force food from the
throat into the stomach.
The stomach churns the food and bathes it in a very strong acid (gastric acid). Food in
the stomach that is partly digested and mixed with stomach acids is called chyme.
After being in the stomach, food enters the duodenum, the first part of the small
intestine. It then enters the jejunum and then the ileum (the final part of the small
intestine). In the small intestine, bile (produced in the liver and stored in the gall
bladder), pancreatic enzymes, and other digestive enzymes produced by the inner
wall of the small intestine help in the breakdown of food.
In the large intestine, some of the water and electrolytes (chemicals like sodium) are
removed from the food. Many microbes (bacteria like Bacteroides, Lactobacillus
acidophilus, Escherichia coli, and Klebsiella) in the large intestine help in the digestion
process.
Solid waste is then stored in the rectum until it is excreted via the anus.
Digestive
glands
Secretion Enzymes Substrate Products
Salivary gland Saliva Ptyalin Starch Maltose
Gastric glands Gastric juice Pepsin
Lipase
Proteins
Lipids
Peptones
Glycerides
Liver Bile juice NO enzyme Fats Emulsification
Pancreas Pancreatic juice Amylase
Trypsin
Lipase
Starch
Proteins
Fats
Maltose
Peptides
Fatty acids
Intestinal
glands
Intestinal juice
or
Succus
entericus
protein digestion
sugar digestion
Lipase
Peptones
Sugars
Fat
Amino acids
Glucose
Fatty acids &
glycerol
Assimilation is the process of utilisation of digested food as the components of
protoplasm, needed for production of energy, growth & repair process.

 EXCRETORY SYSTEM:
 Each kidney is made up of 2 regions – an outer cortex and an inner medulla. Each
kidney receives a renal artery from dorsal aorta and sends a renal vein to inferior
vena cava.
 Ureters are the tubes that connect kidneys with the urinary bladder.
 Urethra is a tubular connection between urinary bladder & external opening of
urinary tract. The muscle which guards the urethra: splincter muscle.
 The urine is forms by 3 main steps:
o Ultrafiltration
o Rebsorption
o Tubular secretion.
 Urine is acidic in nature and its colour is due to presence of pigment- urochrome.

The kidney's primary function is the elimination of waste from the bloodstream by
production of urine. They perform several homeostatic functions such as:-
1. Maintain volume of extracellular fluid
2. Maintain ionic balance in extracellular fluid
3. Maintain pH and osmotic concentration of the extracellular fluid.
4. Excrete toxic metabolic by-products such as urea, ammonia, and uric acid.
Nephron: the functional unit of kidneys
1. Bowman’s capsule along with glomerous from malpighian body.
2. In glomerular filtrate, water(99%), inorganic salts, amino acids, fatty acids,
glucose, urea, uric acid, hippuric acid, hormones, vitamins are present.
3. PCT absorbs glucose, water & vitamins, Na, K, Ca & Mg, 75 % amino acids.
4. Ascending Loop of henle does not absorb any water.
5. The process by which kidneys regulate the water content of the body-
Osmoregulation.
6. DCT reabsorbs some Na & K. It leads to collecting tubes which leads to
ureters.

 NERVOUS SYSTEM
The brain is made of:
• Cerebrum: seat of memory, thought, reason, logic etc. It controls the
coordination of muscular movements.
• Cerebellum: concerned with body equilibrium.
• Medulla oblongata controls the involuntary activities like heart beat, breathing.

Spinal cord is concerned with reflex action.
Note that in brain, gray matter is outside, white matter inside.
In spinal cord, gray matter inside, white matter outside.

 CIRCULATORY SYSTEM:
It is a double circulation system processed by heart:
• Pulmonary where deoxygenated blood is pumped into the lungs.
• Systematic when oxygenated blood is circulated into body parts.
Human heart beats 72 times per minute. Sphygmomanometer measure the BP.
There are 2 limits of BP. Higher limit is the systolic (contraction phase of heart) and
lower is diastolic (relaxation phase of heart). Normal BP is 120/80mm of Hg.
Blood clot: coagulation or solidification of fiuld blood in which fibrinogen is
converted into fibrin.
Blood groupings: antigens & antibodies
 Antigens- they are proteins found on the surface RBCs. Antigens are A and B.

RH factor- it is based on RH antigen. A person can be Rh+ or Rh-. In world population,
Rh+ are 85% and Rh- are 15 % only. RH+ can receive blood from Rh- but no vice-
versa.
 Antibodies- they are produced in lymph gland & are present in blood plasma.
Respiratory disorders:
1. Emphysema- a situation of ‘short breath’ due to break down of alveolar walls and
reduction of respiratory area as it happens due to smoking.
2. Pneumonia- infection of lungs by Diplococcus pneumonia and leads to
accumulation of mucous & lymph in alveoli, impairing gaseous exchange.
3. Asthma- difficult breathing due to spasm in bronchial muscles & narrowing of
bronchi.
4. Hiccups- due to spasmodic contraction of diaphragm.

 REPRODUCTORY SYSTEM
Fertilisation is the fusion of gametes (sperm & egg) to produce a zygote (diploid cell).
Organs to produce gametes are gonads (male gonad is testes, female gonad is
ovaries).Puberty is the age when the reproductive organs become fully functional to
produce offspring.
Male reproductive system consists of a pair of testes, genital ducts, accessory glands
& copulatory organ, penis. Testes contain semeniferous tubules and produce sex
hormones e.g. testosterone.
Female reproductive system consists of a pair of ovaries, fallopian tubes, uterus,
vagina & external genitalia. Ovaries produce ova & female sex hormones. Uterus is
thick walled organ where the embryo develops. Cervix is the entrance of uterus.
Menustrual phase is the shedding of the epithelial lining of the endometrium.
After fertilisation, the young embryo would be implanted in uterus. Embryo later
undergo development and forms the foetus. Gestation period is the time for which
the young ones are carried within the uterus.
Placenta serves as the nutritive organ and respiratory exchange between the foetus
and mother. Umbilical cord attaches the foetus with placenta. Pregnancy lasts for
280 days. After the birth, placenta is removed.
Chromosome: a unit of hereditary character. The number of chromosomes in human
is 46 (out of which 44 are known as autosomes & 2 are sex hormones).
Male has 44 + XY chromosomes.
Female has 44 + XX chromosomes.
The hormone that stimulates contraction of uterus during child birth is oxytocin.

 ENDOCRINE SYSTEM
Endocrine glands do not possess ducts & their secretions are called hormones.
Hormones are chemical regulators. Hormones are directly poured into the blood
stream & act on the target organs.
Exocrine glands have ducts, secrete enzymes. They increase the rate of a biochemical
reaction.
Gland Hormones secreted Effect of hormones
Pineal gland Melatonin Affects daily physiologic cycles
Pituitary
gland
Growth hormone
Anti-diuretic hormone
Gonadotrophins
Controls growth of bones & muscles
Increases re-absorption of water in
kidneys
Controls development of ovaries & testes
Thyroid gland Thyroxine Controls rate of metabolism & rate that
glucose is used up in respiration &
promote growth
Adrenal
gland
Adrenaline or emergency
hormone
Prepares the body for emergencies,
increase heart rate, depth of breathing,
raises blood sugar level so more glucose
is available for respiration, diverts blood
from gut to limbs
Pancreas Insulin
Glucagon
Converts excess glucose into glycogen in
liver
Converts glycogen back to glucose in
liver
Ovaries Oestrogen
Progesterone
Controls ovulation
Prepares the uterus lining for receiving
an embryo
Testes Testosterone Control sperm production
Thymus Thymosin Promotes production & maturation of
WBCs.
Master gland: pituitary
Largest gland: thyroid.

 HUMAN DISEASE:
BACTERIAL
Disease Cause Effects
Tuberculosis Mycobacterium
tuberculosis
Infection in lungs, high fever (BCG vaccine
can help)
Whooping
cough
Bacillus pertussis Mild fever, irritating cough
(DPT vaccine)
Cholera Vibrio cholera Vomiting & muscular cramps
Dehydration & loss of minerals
Diarrhoea or
food
poisoning
escherchia coli,
shigella,
campylobactera &
salmonella.
Dehydration accompanied by fever, nausea
or vomiting
Tetanus Motile bacteria,
clostridium tetani
Enter through injured
surfaces
Paralysis of thoracic muscles (neck & jaw)
Pneumonia Streptococcus
pneumonia
Inflammation of lungs resulting in chest
pain, shallow breathing
Typhoid Salmonella typhi
found in intestine of
humans
High fever, head ache, ulceration of
intestine
Plague Bacterium
pasteurella/ yersinea
pestis
Transmitted by bed
bug or head louse
Bubonic- blood disease, enlargement of
lymph nodes.
Pneumonic-haemorrhages of bronchi &
lungs.
Septicemic- Anaemia
Gonorrhoea Neisseria
Gonorrhoea
transmitted through
sexual contact
Infection in the mucous membrane of
urinogential tract
May result in female sterility

VIRAL
Mumps Paramyxovirus Painful swelling of salivary glands
Measles Rubella virus Loss of appetite, eruptions on skin, buccal
& respiratory passage show signs of
inflammation
Influenza Influenza Virus Inflammation of upper respiratory tract,
nose, throat & eyes
Common cold Rhinovirus watery eyes, excessive nasal secretions
Rabies RNA virus Hydrophobia, spasm of throat & chest
leading to death
Hepatitis Hepatitis A virus
Hepatitis B virus
Jaundice, loss of appetite
Hepatitis B is fatal
Dengue
fevere
RNA containing
dengue virus, by bite
of female mosquito
aedes aegypti
Conjunctivitis, high fever, backache, retro-
orbital pain (between the eye balls).
Can be haemorrgraphic: fatal with nausea,
abdominal pain
Yellow fever Arbovirus Vomiting, rupture of veins in kidneys,
spleen, liver etc.
PROTOZOAN
Malaria Plasmodium
protozoan
anopheles mosquito
Reoccuring fever, weakness
Amoebiasis Entamoeba histolytica Abdominal pain, alternating diarrhoea &
constipation, stool with blood, mucous &
mucous membrane pieces.

 MINERALS & VITAMINS
Minerals are derived from the breakdown of rocks of earth’s crust which are then
dissolved in water.
Minerals are needed in only small quantities in the diet, though some of them
accumulate to a specific degree e.g. there is around 1kg of calcium in the average
human body.
1. Calcium, phosphorus & magnesium compounds are major components of
bones & teeth.
2. Fluoride is important in protecting teeth from decay.
3. Sodium, potassium, calcium & chloride ions are important in
a. maintaining correct composition of cells, of the tissue fluids around
them (homoestatis).
b. Communication between cells i.e. rapid transfer of signals along nerve
cells & in brain.
c. Muscle contraction.
4. The hormones produced by thyroid gland contains iodine.
5. Enzymes uses magnesium, selenium, zinc for functioning.
6. Sulphur is essential component of amino acids.
7. Iron is incorporated into haemoglobin & related proteins.
VITAMINS :
Vitamins A,D,E and K are fat-soluble & the remaining are water-soluble.
Water-soluble vitamins are easily lost during cooking & are destroyed by exposure to
air & light, so care is needed in food preparation to preserve them.
Deficiency diseases are occur when vitamins are absent or in short supply.

VITAMIN DIETARY SOURCE DEFICIENCY DISEASE
A Cheese, eggs, butter, milk Night blindness,
B1- thiamin Vegetables Beri-beri
B2 - riboflavin Cereals, rice, mushrooms Ariboflavinosis
B3 - niacin Beef, prok, wheat, maize Pellagra
B5 - pantothenic acid Broccoli & whole grains Paresthesia
B6 - pyridoxine Potatoes & peanuts Anemia peripheral
neuropathy
B7- biotin Dried mixed fruit Dermatitis, enteritis
B9 - folic acid Broccoli, sprouts, spinach Megaloblast. Deficiency
during pregnancy causes
Birth defects
B12 – cobalamin Salmon, cod, yeast
extracts
Megaloblastic anemia
C- ascorbic acid Citrus fruits, kiwi, tomato Scurvy
D Oily fish, margarine Rickets & osteomalacia
E Plant oils & green leafy
vegetables
Mild haemolytic anemmia
in new born (rare)
But overdose may cause
congestive heart failure.
K Vegetable oils & diary
foods
Bleeding diathesis

QUESTIONAIRE
1. Down’s syndrome is caused by an extra
(a) 11 th
chromosome
(b) 18 th
chromosome
(c) 21 st
chromosome
(d) 22 nd
chromosome
2. Which one of the following vitamins helps in the formation of collagen?
(a) Vitamin A
(b) Vitamin-B2
(c) Vitamin-C
(d) Vitamin-E
3. Which of the following is not a mosquito borne disease?
a) Dengue fever
b) Malaria
c) Sleeping sickness
d) Filariasis
4. Among the following elements, which one is essential for the transmission
of impulses in the nerve fibre?
a) Calcium
b) Iron
c) Sodium
d) Zinc
5. The vitamin which is very liable and easily destroyed during cooking as
well as storage is

a) Vitamin A
b) Vitamin b6
c) Vitamin C
d) Vitamin K
6. The compound used in anti-malarial drug is
a) Aspirin
b) Neoprene
c) Isoprene
d) Chloroquin
7. Which of the following is a skin disease?
a) Anaemia
b) Pellagra
c) Osteomalacia
d) Rickets
8. The richest source of vitamin D is
a) Cod liver oil
b) Spinach
c) Milk
d) Cheese
9. Which of the following tests helps in diagnosis of cancer?
a) X-ray
b) Urine test
c) Blood test
d) Biopsy test
10. In Photosynthetic process, atmospheric carbondioxide is ____ to
carbohydrates

a) oxidised
b) Reduced
c) Neutralised
d) Burnt
11. On seeing good food our mouth waters. This fluid is actually
a) Water
b) Hormone
c) Enzyme
d) None of the above
12. The enzyme Pepsin is inactive in stomach without the presence of
a) Nitric Acid
b) Hydrochloric acid
c) Acetic acid
d) Butyric acid
13. Villi present on the inner lining of the intestinal wall
a) Secretes enzymes for digestion
b) Secretes hormones
c) Decreases the surface area for absorption
d) Increases the surface area for absorption
14. During cellular respiration one molecule of glucose is first broken down
into two molecules of ________
a) Acetic acid
b) Pyruvic acid

c) Lactic acid
15. Rajib was absent in the class because of muscle pain which he claims to
be due to excess physical exercise he had done yesterday. This pain is due to
a) Formation of lactic acid
b) Formation of acetic acid
c) Formation of Pyruvic acid
d) Formation of Hydrochloric acid
16. Right part of the human heart contains
a) Oxygenated blood
b) Mixed blood
c) Deoxygenated blood
d) No blood
17. The transport of soluble products of photosynthesis is called
translocation and it occurs in the part of the vascular tissue called
a) Xylem
b) Sclerenchyma
c) Phloem
d) Collenchyma
18. In human each kidney has large numbers of filtration units called ___
a) Neutrons
b) Neurons
c) Neptune
d) Nephrons

19. Gustatory receptors will detect ______
a) light
b) Taste
c) Smell
d) Touch
20. The gap between two neurons is called _____
a) Synapse
b) Synthesise
c) Dendron
d) Axon
21. Involuntary actions including blood pressure, salivation and vomiting are
controlled by the __________ in the hind-brain.
a) Medals
b) Cerebellum
c) Medulla
d) Cerebrum
22. A potted plant kept in a room tends to bend towards the direction of
light. This movement is called
a) Photographism
b) Photonastism
c) Photoperiodism
d) Phototropism
23. The endocrine organ present in human female but not in human male is

a) Testis
b) Ovary
c) Pituitary gland
d) Thymus
24. If there is a deficiency of growth hormone the child becomes _____
a) Blind
b) Mentally retarded
c) Giant
d) Dwarf
25. People living in coastal areas suffer less from goitre. This is because
a) They eat sea food
b) They drink sea water
c) They bathe in sea water
d) All of the above
26. The direction of impulse in a typical neuron is
a) Axon to dendron
b) Dendron to axon
c) Both a and b are correct
d) Both a and b are wrong
27. Male reproductive organ in flowering plant is
a) Carpel
b) Stamen
c) Corolla

d) Ovary
28. Female reproductive organ in flowering plant is
a) Carpel
b) Stamen
c) Corolla
d) Ovary
29. A fertilized ovule develops into a _____ in an angiosperm plant
a) seed
b) fruit
c) flower
d) cotyledon
30. Where are sperms formed in the human body?
a) Vas deferens
b) Prostate gland
c) Ovary
d) Testis
31. The place where fertilization take place in the human body is
a) Uterus
b) Oviduct / fallopian tubes
c) Ovary
d) vagina
32. Copper T and Loops are

a) Contraceptive devices
b) Conventional devices
c) Conducive devices
d) Contaminating devices
33. _______ is a common tube for urine and sperm in human male.
a) Urethra
b) Uterus
c) Ureter
34. If in human a sperm (22+Y) fertilizes an egg (22+X), the sex of the foetus
shall be
a) Male
b) Female
c) Either male or Female
d) none of these
35. Forelimb of frog, lizard, bird & man has some evolutionary relationship.
This are
a) Hand relationship
b) Missing links
c) Analogous organs
d) Homologous organs
36. The number of autosomes in a human body cell is
a) 44

b) 46
c) 22
d) 23
37. The theory of Natural Selection was proposed by
a) Lamarck
b) Darwin
c) Mendel
d) Haldane
38. Surgically removing tails of mice over several generations’ do not yield
mice without tails. This proves that
a) Cutting tail does not cause genetic change. So it not inherited.
b) Acquired characters during one’s own life are not inherited.
c) Neither a nor b is correct
d) Both a and b are correct
39. Only ____ % of the energy can be transferred from one trophic level to
the next trophic level.
a) 1
b) 5
c) 10
d) 20
40. Accumulation of non- biodegradable pesticides in different trophic levels
is called
a) Biological degradation
b) Biological magnification

c) Biological concentration
d) Biological deposition
41. The kidneys in human beings are a part of the system for
(a) nutrition.
(b) respiration.
(c) excretion.
(d) transportation.
42. The xylem in plants are responsible for
(a) transport of water.
(b) transport of food.
(c) transport of amino acids.
(d) transport of oxygen.
43. The autotrophic mode of nutrition requires
(a) carbon dioxide and water.
(b) chlorophyll.
(c) sunlight.
(d) all of the above.
44. The breakdown of pyruvate to give carbon dioxide, water and energy
takes place in
(a) cytoplasm.
(b) mitochondria.
(c) chloroplast.
(d) nucleus.

45. Movement of food through oesophagus is due to
(a) Lubrication by saliva
(b) Peristalsis
(c) Gravitational Pull
(d) All of the above
46. Where is bile produced?
(a) Gall bladder
(b) Blood
(c) Liver
(d) Spleen
47. In normal expiration, the diaphragm is
(a) Arched
(b) Flattened
(c) Perforated
(d) None of these
48. The correct pathway of blood in circulatory system is
(a) atria → ventricles → arteries → veins
(b) ventricles → atria → veins → arteries
(c) ventricles → veins → arteries → atria
(d) veins → ventricles → atria → arteries
49. Respiration is a process in which

(a) Energy is stored in the form of ADP
(b) Energy is released and stored in the form of ATP
(c) Energy is used up
(d) Energy is not released at all.
50. The UV radiation from the sun is likely to cause _____________ in human
a) Skin cancer
b) Lung cancer
c) Liver Cancer
d) Brain Cancer
51. The three Rs to save the environment are
a) Remember, Reduce, Reuse
b) Recall, Reduce, Refund
c) Reduce, Recycle, Reuse
d) Reduce, Refund, Reuse
52. Biodiversity hot spots are
a) Areas where large number of different species are found
b) Hot Areas where large number of different species are found
c) Areas which became hot due to large number of different species.
d) Areas where large spot has been created due to death of number of species
53. Chipko Andolan is associated with
a) Protesting against pasting of posters on walls
b) Saving money
c) Using more postal stamps
d) Saving forest

54. To which one of the following types of organisms do mushrooms
belong?
a) Algae
b) Ferns
c) Fungi
d) Lichens
55. Food wrapped in newspaper is likely to get contaminated with
A. Lead
B. Aluminium
C. Iron
D. Magnesium
56. Which one of the following plants is used for green manuring in India?
A. Wheat
B. Sunhemp
C. Cotton
D. Rice
57. Which one of the following disease is Inheritable?
A. Leukaemia
B. Colour blindness
C. Malignancy
D. Hepatitis
58. Which of the following vitamins is synthesised in the body by intestinal
bacteria?
A. vitamin B1
B. vitamin B4
C. vitamin D
D. vitamins K

59. BCG vaccination (Bacillus Calmette Guerine) is injected to get immunity
from
A. Polio
B. Cholera
C. Small pox
D. Tuberculosis
60. Which one of the following parts of the pitcher plant becomes modified
into a pitcher?
A. Stem
B. leaf
C. stipule
D. petiole
61. Which chamber of human heart pumps fully oxygenated blood to aorta
and hence to the body?
A. Right Auricle
B. Left Auricle
C. Right Ventricle
D. Left Ventricle
62. Which one of the following is a vitamin?
A. Citric acid
B. Folic acid
C. Glutamic acid
D. Linoleic acid
63. Which one of the following is responsible for converting milk into curd?
A. Fungi
B. Bacteria

C. Virus
D. None of these
64. In which one of the following animals is skin a respiratory organ?
A. Cockroach
B. Frog
C. shark
D. Whale
65. What is the pH level of blood of a normal person?
A. 4.0 – 4.5
B. 6.45 – 65.5
C. 7.35 – 7.45
D. 8.25 – 8.35
66. Which of the following disease is not a caused by viruses?
A. Cholera
B. Chickenpox
C. Hepatitis
D. Measles
67. In which one of the following, antibody formations takes place?
A. RBC’s
B. Blood platelets
C. Blood Plasma
D. Donnan’s membrane
68. How do most insects respire?
A. through skin
B. through gills

C. by lungs
D. by trachea system
69. Which one of the following part of human brain is the regulating centre
for swallowing and vomiting?
A. Cerebellum
B. cerebrum
C. medulla oblongata
D. pons
70. Production of which one of the following is a function of the liver?
A. Lipase
B. Urea
C. Mucus
D. Hydrochloric acid
71. Oncogene is responsible for
A. Aids
B. typhoid
C. malaria
D. cancer
72. Which acid is produced when milk gets sour?
A. Acetic acid
B. Tartaric acid
C. Lactic acid
D. Butyric acid
73. Two richest known sources of edible protein are

A. Meat and eggs
B. Milk and vegetables
C. Soyabean and groundnut
D. Some algae and other micro-organisms
74. Which nutrients are most likely to be affected by food processing and
storage?
A. Carbohydrates
B. Fats
C. Proteins
D. Vitamins
75. The part of the body directly affected by Rickets is:
(a) Bone tissue
(b) Epidermal tissue
(c) Nervous system
(d) Respiratory system
76. The part of the body directly affected by Pneumonia is:
(a) Bone tissue
(c) Nervous system
77. The part of the body directly affected by Rabies is:
(a) Bone tissue
(c) Nervous system
78. The part of the body directly affected by Beri Beri disease is:

(a) Nervous system
(c) Respiratory system
(d) Bone tissue
79. Amino acids are a product of the digestion of:
(a) Carbohydrates
(b) Fats
(c) Proteins
(d) Vitamins
80. Which one of the following pairs of food components in humans reaches
the stomach totally undigested
a) Protein and starch
b) Fat and starch
c) Fat and cellulose
d) Starch and cellulose
81. urea is the chief nitrogenous component of the excretory products of
a) Man
b) Earthworm
c) Cockroach
d) Frog
82. Amino acids are used as food additives for which of the following
reasons?
a) As natural antibiotics
b) As natural growth inhibitors
c) For nutritive purposes
d) As antioxidants

83. Lycopene is an important antioxidant normally present in high level in
a) Artichokes
b) Bananas
c) Tomatoes
d) Soyabeans
84. The main effect of DDT on birds is
a) fewer feathers
b) reduced growth
c) blindness
d) thinner egg-shell
85. Which of the following is most hazardous?
a) Crop waste
b) Yard waste
c) Paper waste
d) Battery
86. The fertile part of soil is
a) mineral water
b) soil air
c) humous
d) soil water
87. The main source of air pollution is
a) Factory exhaust
b) Automobile exhaust
c) Firewood
d) Bad breath

88. Majority of all living species on the Earth are found in
a) Tundra region
b) Antarctica
c) Tropical rainforest
d) Temperate region
89. Cell organelle found only in plants
a) Mitochondria
b) Plastids
c) Golgi complex
d) Ribosomes
90. Enzymes are polymers of
a) Amino acids
b) Fatty acids
c) Sugar
d) Ribosomes
91. Which trait can effectively be confered into a plant by a transgene?
a) Resistance to insects
b) Resistance to humans
c) Tolerance to light
d) Tolerance to snowfall
92. What is the general term used to describe the degradation of pollutants
using a biological apporach?
a) Biostimulation
b) Bioremediation
c) Biodegradation
d) Bioprocessing

93. Which genera of micro-organisms have the most diverse pathways for
bioremediation?
a) Pseudomonas
b) Salmonella
c) Legionella
d) Colletotrichum
94. What is nanotechnology?
a) The individual manipulation of molecules and atoms to create materials
with novel or improved properties
b) The creation of new terms to describe very small, almost unimaginable
particle in physics
c) The terms used to describe the size of cellular components
d) The transition of molecular biology into the physical sciences
95. The colourless, odourless, tasteless radioactive gas present within homes
and buildings is
a) Argon
b) Radon
c) Xenon
d) Krypton
96. Pedology is the study of
a) Rock
b) Coal
c) Ecosystem
d) Soil
97. The absorption of zinc in the human digestive tract may be inhibited by
the presence of

a) Plant fibre
b) Animal fibre
c) Water
d) Oil
98. A species that is unique to a defined place or region and not found
anywhere else is called
a) Endangered
b) Endemic
c) Indigeneous
d) Extinct
99. The main cause of global rising sea levels is
a) Thermal expansion
b) Melting of glaciers
c) Melting of polar ice
d) Melting of Antarctica
100. Anemometer is used to measure
a) wind density
b) wind velocity
c) wind speed
d) wind gravity
101. Ketone bodies are produced by
a) brain
b) liver
c) kidney
d) muscles

102. Genetic mapping is based on the linkage between it on to a second
substrate.
a) loci
b) muton
c) recon
d) cistron
103. Most of the plants obtain nitrogen from the soil in the form of
a) nitrate
b) nitrite
c) nitric acid
d) nitrogen gas
104. Soilless Culture is called
• Hydrophobics
• Hydroponics
• Hydrophilic
• plant culture
105. Iron for the body is mainly obtained from
• Fruits
• Germinating seeds
• Green vegetables
• Milk
106. Dialysis is used for a patient suffering from
• heart trouble
• liver trouble
• brain trouble
• kidney trouble

107. In which season do we need more fat
• Summer
• Winter
• Rainy season
• None
108. Body build up food is
• Fats
• Carbohydrates
• Proteins
• all the above
109. Human eye has
• Concave
• Convex
• biconcave
• flattened lens
110. Diphtheria affects the
• alimentary canal
• Throat
• Lungs
• Brain
111. Bleeding of the gums is caused by the deficiency of
• A-Vitamin
• D-Vitamin
• Vitamin C and D
• K-Vitamin

112. Gums disease is called
• Diphtheria
• Anemic
• Pneumonia
• Pyorrhea
113. Thrombosis’ is a disease of the
• blood
• skin
• Brain
• Lungs
114. ‘Cataract’ is the disease of
• blood
• eyes
• Kidney
• Ears
115. The Chinese practice of curing a disease by needle is called
• needle therapy
• acupuncture
• thrombosis
• none
116. The source from which quinine is extracted
• Cinchona
• Fungi
• Roulfia
• Datura

117. Which of the following is a sex linked disease
• tuberculosis
• Bow leg gedness
• Colour blindness
• Anaemia
118. Milk sugar is called
• Fructose
• galactose
• Sucrose
• Lactose
119. The vitamin found in chillies is
• B-Vitamin
• C-Vitamin
• D-V itamin
• K-Vitamin
120. Casein is a
• Milk sugar
• Milk fat
• Milk protein
• None
121. Rearing of silk worms is called
• Arboriculture
• Sericulture
• Silviculture
• Apiculture

122. Plants prepares the food in presence of sunlight by the phenomenon of
• Osmosis
• transpiration
• photosynthesis
• none
123. Ascorbic acid is an
a) Enzyme
b) Carbohydrates
c) Protein
d) Vitamins
124. Culturing of honey bees is called
• Arboriculture
• Sericulture
• Silviculture
• Apiculture
125. Insulin is a hormone which secretes from
• liver
• gonads
• pancreas
• pituitary gland
126. The age of a tree can be determined by
• the number of leaves on a tree
• measuring its diameter of stem
• Counting the number of annual ring
• the number of branches present on a tree

127. Meningitis is a disease of the
• liver
• Kidney
• heart
• brain
128. Antibiotics are drugs used for the cure of
• Bacterial diseases
• Cancer
• Malaria
• Nervous disorders
129. Alexander Fleming discovered
• Penicillin
• X-ray
• Streptomycin
• Telephone
130. Who discovered circulation of blood in human body?
• Edward Jenner
• Joseph Lister
• William Harvey
• Jonon Esals
131. The credit of developing the polio vaccine goes to:
• Jonas Salk
• Alb E. Sabin
• Selman Waksman
• none of these

132. Anatomy is the branch of science which deals with:
• Structure of animals and plants
• Functioning of body organs
• Animal behavior
• Cells and tissues
133. Ecology deals with:
• Birds
• Cell formation
• Relation between Organisms and their environment
• Tissues
134. Oncology is the study of:
• Birds
• Cancer
• Mammals
• Soil
135. How many bones are there in a newborn child approximately?
• 206
• 207
• 300
• 307
136. Who invented X-Ray?
• Roland Hill
• Wilhelm K. Roentgen
• Marie Curie
• Graham Bell

137. Who is the father of modern genetics?
• Gregor Mendel
• Francis Crick
• Thomas Watson
• Charles Darwin
138. Largest muscle of human body is:
• Pelvic
• Bicep
• Stapadius
• Cardiac
139. Name the longest bone of human body:
• Radia
• Ulna
• Femur
• Tibia
140. Which gland in the human body is called Master Gland?
• Pituitary Gland
• Bulbourethral gland
• Thyroid gland
• Lever
141. A branch of science dealing with the study of teeth is:
• Odontology
• Ornithology
• Entomology
• Gerontology

142. Which gland controls blood pressure?
• Thyroid gland
• Pituitary Gland
• Bulbourethral gland
• Adrenal glands
143. How many chromosomes does the human cell contains?
• 46
• 38
• 29
• 52
144. Who is affected by ‘Foot and Mouth Disease?
• Human being
• Goats
• Cattle
• Cats
145. Which disease is caused by the deficiency of vitamin B1?
• Beriberi
• Measles
• Scratch
• Mumps
146. Malaria affects which part of the body?
• Spleen
• Lungs
• Heart
• Kidneys

147. With which part of the body is affected by Myopia?
• Ears
• Heart
• Eyes
• Kidneys
148. Which part of the body is affected by Pyorrhea?
• Elbow
• Gums
• Skin
• Lungs
149. What is the name of the instrument that is used to measure the pulse
rate?
• Hygrometer
• Thermometer
• Ammeter
• Sphygmometer
150. What are the antibodies that participate in the defence mechanism of
our body made up of?
• Proteins
• Vitamins
• Carbohydrates
• Minerals
151. Cow milk is a rich source of:
• Vitamin A
• Vitamin B
• Vitamin C
• Vitamin D

152. Which of the following diseases is not caused by a virus?
• Cancer
• Rabies
• AIDS
• Severe Acute Respiratory Syndrome (SARS)
153. Which of the following diseases is caused by the deficiency of iron in
human body?
• Anaemia
• Scurvy
• Dermatosis
• Beri-Beri
154. Which of the following is a disease of brain?
• SARS
• AIDS
• Diabetes
• Alzheimer’s
155. India’s first transgenic crop was
• Potato
• Brinjal
• Sugarcane
• Cotton
156. Total volume of blood in a normal adult human body:
• 5-6 liters
• 3-4 liters
• 8-10 liters
• 10-12 liters

157. Name the hardest substance of the body:
• the Enamel of teeth
• the skin
• the skull
• the thigh bone
158. How many sets of ribs usually are there with human being?
• 10
• 12
• 14
• 16
159. Tibia is a bone found in the:
• Skull
• Arm
• Leg
• Face
160. What is the largest organ of human body?
• Liver
• Intestine
• Skin
• Thigh
161. How many muscles are there in human body?
• 620
• 640
• 570
• 470

162. Which part of the human body remains the same in size from birth to
death?
• Nose
• lips
• eyes
• ears
163. Human heart beats about how many times a day:
• 50 thousand times
• 1 lakh times
164. The main function of the kidney is:
• To control blood pressure
• To control body temperature
• To remove waste product from the body
• To help in digestion of food
165. What is the speed that a human brain sends message?
• 140 mph
• 100 mph
• 240 mph
• 200 mph
166. Which of the following glands secrete tears?
• Lachrymal
• Pituitary
• Thyroid
• Pancreas

167. At the time of sneezing which part of human body stops functioning?
• Lungs
• Heart
• Kidney
• Eyes
168. Bats can fly in the dark because
• they have a better vision in the dark
• the light startles them
• they produce high pitched sounds called ultrasonic
• None of the above
169. Bovine Spongiform Encephalopathy refers to
• Brain Fever
• Mad Cow Disease
• Enteric Fever
• Poultry Diarrhea
170. The heart of the human embryo starts beating in the ___ week of its
development,
• second
• third
• fourth
• first
171. The two minerals required to keep teeth and bones intact and in good
condition are
• lead and zinc
• calcium and phosphorus
• copper and sulphur
• iron and iodine

172. Vitamins A and C are predominantly present in
• brinjal
• lady’s finger
• potato
• tomato
173. Excess carbohydrates and insufficient proteins in daily diet will lead to
• Kwashiorkor
• Night blindness
• Pernicious anaemia
• Loss of hair
174. Coagulation of blood in vessels is prevented during normal circulation by
• heparin
• prothrombin
• plasmogen
• thromboplastin
175. If a father has blood group A and the mother has blood group 0, which
one of the blood groups may be found in their progeny?
• A
• AB
• O
• Both (a ) and (c )
176. The endocrine glands secrete
• bile
• hormones
• sweat
• genes

177. Which of these is most consistently observed in Vitamin B12 deficiency?
• Pigmentation of skin
• Red, sore tongue with capillary atrophy
• Megaloblastic anaemia
• Absence of tendon reflexes
178. Which element in chillies causes burning sensations?
• Capsaicin
• Cyanogen
• Ammonia
• Capsicum
179. Which one of the following is not an essential micronutrient for plants?
• Boron
• Zinc
• Sodium
• Copper
180. The stones formed in human kidney consist mostly of
• sodium acetate
• magnesium
• calcium oxalate
• calcium
181. A person with a blood group __ is considered to be an universal donor.
• A Positive
• AB Positive
• AB Negative
• O negative

182. It is possible to produce seedless tomato fruits by
• applying trace elements in tomato fields
• spraying mineral solution on plants
• spraying hormones on flowers
• applying fertilizers containing radioactive elements
183. ‘Late Blight’ is a disease that affects the ____ crop.
• coconut
• cashew
• potato
• pepper
184. Saffron is the dried _____ of the saffron plant.
• fruit
• aril
• stigmas and tops of styles
• tender leaves and sprouts
185. Vitamin D is manufactured in a healthy human being by the action of
____ on the skin and absorbed in the blood stream.
• ozone
• radium
• moonlight
• sunlight
186. Which of the following characteristics separates man from all other
primates?
• Exhibition of curiosity
• Degenerate sense of smell
• Opposability thumb
• Projecting chin

187. Lactose and Rennin, the enzymes required to digest milk, disappear in
the human body by the age of ____ years.
• 2
• 3
• 5
• 8
188. The term ‘Fauna’ means
• plant kingdom
• animal kingdom
• neither
• Both
189. pH of blood remains constant due to
• blood pressure
• perspiration
• buffer action
• respiration
190. Which one among the following statements regarding heart sounds is
correct?
• Heart sounds are caused by the internal blood flow inside the heart
• Heart sounds are caused by the external blood flow outside the heart
• Heart sounds are caused by opening and closing of heart valves
• Normal sounds are called ‘murmurs’
191. The seeds can most suitably preserved in :
• cold and dry condition
• cold and wet condition
• hot and dry condition
• hot and wet condition

192. Which among the following vitamins is considered to be a hormone?
• A
• B
• C
• D
193. Decomposition of organic matter is due to
• Virus
• Fungi
• Bacteria
• None of these
194. Which of the following crops helps in nitrogen fixation?
• Rice
• Wheat
• Maize
• Beans
195. The spider spins its web from a liquid secreting from its
• posterior silk gland
• posterior abdomen glands
• mouth
• salivary glands
196. Which one of the following is caused by the expression of a recessive
gene present on sex chromosome?
• Rheumatism
• Nervous shock
• Muscular dystrophy
• Cerebral haemorrhage

197. It Is not advisable to sleep under a tree at night because of release of
• oxygen in a lesser quantity than the required levels
• oxygen in large amounts
• carbon monoxide
• carbon dioxide
198. The rate of growth of plants can be measured by a/an
• manometer
• photometer
• auxanometer
• thermometer
199. Which of the following is not found in animal cell?
• Cell wall of cellulose
• Nucleus
• Mitochondria
• None of these
200. Mammal capable of flying is :
• Jaguar
• Ostrich
• Pallican
• Bat
201. The edible part of the potato is :
• root
• bud
• fruit
• stem

202. The small pox vaccine was discovered by
• Edward Jenner
• Louis Pasteur
• John
• Harvey
203. In which of the following structure the human body vermiform appendix
is included:
• large intestine
• small intestine
• gall bladder
• stomach
204. Usually stem cutting is a culturing process which is used in:
• banana
• sugarcane
• mango
• cotton
205. The fruits of coconut and mango are __.
• pome
• drup
• beri
• hesperidium
206. Hydroponics is associated with a:
• plant growth without soil
• plant growth without water
• relation of sound and air
• technique of water conservation

207. Which of the following is not a mammal?
• fish
• bat
• whale
• None of these
208. The hormone secreted when one is frightened or excited
• pituitrin
• thyroxine
• parathormone
• adrenaline
209. Which of the following acid is present in the human abdomen?
• sulphuric acid
• hydrochloric acid
• nitric acid
• picric acid
210. The enzyme that is necessary to bring about clotting of blood is
• peptidase
• amylase
• lipase
• thrombokinase
211. Blood clotting requires vitamin
• A
• B
• C
• K

212. Sex linked genes are carried by
• X-chromosomes
• Y-chromosomes
• different part of X- and Y-chromosomes
• autosomes
213. Sickle-cellanemia is a disease caused due to the abnormality in
• White blood cells
• Red blood cells
• Thrombocytes
• Blood plasma composition
214. The blood group AB is called universal recipient because:
• antibody is found in the blood
• antibody is not found in the blood
• blood lacks antigen
• blood lacks both antibody and antigen
215. Carbohydrate are stored in plants and animals in the form of
• cellulose and glucose respectively
• starch and glycogen respectively
• starch and glucose respectively
• cellulose and glycogen respectively
216. The science dealing with diseases of plants is called as __.
• Plant anatomy
• Plant ecology
• Plant morphology
• Plant pathology

217. Which one of the following techniques can be used to establish the
paternity of a child?
• Protein analysis
• Chromosome counting
• Quantitative analysis of DNA
• DNA finger printing
218. In human body, the pancreas secretes its enzymes into which one of the
following?
• Duodenum
• lleum
• Jejunum
• Stomach
219. Which among the following is the richest source of ascorbic acid?
• Apple
• Bean
• Carrot
• Guava
220. The vitamin which is generally excreted by humans in urine is :
• vitamin A
• vitamin D
• vitamin C
• None
221. The human body needs the following vitamins. Arrange them in the
increasing order of their requirement:
1) Vitamin A 2) Vitamin D 3) Vitamin E 4) Vitamin K
• 1,2,3,4
• 3, 1,2,4

• 4,3,2, 1
• 1,4,3,2
222. Match the following
A. Typhoid 1 . Metabolic disorder
B. Measles 2 . Bacteria
C. Malaria 3 . Virus
D. Diabetes 4 . Protozoa
• 2 3 4 1
• 1 2 3 4
• 3 2 4 1
• 4 3 2 1
223. The virus of AIDS affects the growth of:
• Haemoglobin
• RBCs in blood
• T cells in blood
• grey cells in brain
224. In the rabbit and horse, the appendix:
• is very small
• helps in digestion of cellulose
• has no use
• stores food
225. Which of the following statements is true with respect to Leukaemia:
• Number of RBCs increases in blood
• Number of WBCs increases in blood
• Number of both RBCs and WBCs decreases in blood
• Number of WBCs decreases in blood

226. Which of the following is not an autoimmune disorder?
a) Diabetes mellitus
b) Haemolytic anemia
c) Rheumatic fever
d) Cholera
227. The natural anticoagulant of blood in the vessel is
a) EDTA
b) Oxalate
c) Citrate
d) Heparin
228. Western blotting technique is used to detect the
a) proteins
b) DNA
c) mRNA
d) rRNA
229. Which of the following is not a renewable energy resource?
a) Wood
b) Wave
c) Biogas
d) Natural gas
230. Streptomycin is used to cure the diseases caused by
a) Bacteria
b) Virus
c) Yeast
d) Fingi

231. Antihaemorrhagic vitamin is also called as
a) Vitamin E
b) Vitamin K
c) Vitamin D
d) Vitamin B12
232. Erythropoietin, the hormone involved in synthesis of RBCs, is released to
blood circulation by
a) red blood cells
b) bone marrow cells
c) renal cells
d) hepatic cells
233. Plasma bicarbonate is transported across red blood cells by
a) Pectrin
b) Ankyrin
c) Carbonic anhydrase
d) Band 3 protein
234. The discovery of human blood group was made by
a) Emil Von Behring
b) Ehrlich
c) Landsteiner
d) Milstein
235. “Penicillin” the wonder drug was discovered first by Alexander Fleming
from the culture of
a) Penicillium notatum
b) Penicillium chrysogenum
c) Penicillium funiculosum
d) Penicillium stoloniferum

236. Who developed the Rabies vaccine?
a) Robert Koch
b) Robert Gallo
c) Walther Hesse
d) Louis Pasture
237. Sugar in the nucleotide is
a) Hexose
b) Pentose
c) Priose
d) Heptose
238. The first viral pathogen discovered was
a) HIV
b) TMV
c) HPV
d) YMV
239. Plague is caused by
a) Bacterium
b) Fungus
c) Alga
d) Virus
240. Selman A. Waksman was awarded Nobel Prize for the discovery of
a) Penicilin
b) Streptomyces
c) Streptomycin
d) Penicillium

241. Robert Koch has been awarded Nobel Prize in 1905 for the discovery
of a) Anthrax b) Cholera c) Tuberculosis
A) a and b
B) a and c
C) only a
D) only c
242. Organisms, which utilize simple inorganic compounds, are termed as
a) Phototrophs
b) Autotrophs
c) Heterotrophs
d) Necrotrophs
243. Which of the following methods is employed for disposal of sludge that
is contaminated with heavy metals heavily?
a) Incineration
b) Drying
c) Landfilling
d) Composting
244. Deterioration of fat in the presence of oxygen is due to the enzyme
a) Lipase
b) Protease
c) Lipoxygenase
d) Peptidase
245. In cheese manufacture, curd is formed by the addition of
a) Renin
b) Protease
c) Peptidase
d) Amylase

246. Excessive intake of polished rice causes deficiency of
a) Vitamin A
b) Vitamin B1
c) Vitamin D
d) Vitamin K
247. Tofu is a processed product of
a) Kidney bean
b) navy bean
c) Broad bean
d) Soyabean
248. Decomposition of carbohydrates by microorganisms or enzymes is called
a) Putrefaction
b) Fermentation
c) Canning
d) Dextrinisation
249. Consider the following statements:
A. Milk is rich in calcium and vitamin D.
B. On heating milk combines with casein and is converted to calcium
caseinate. Of these
a) Statement A is correct and B is wrong
b) Statements A and B are correct
c) Statements A and B are wrong
d) Statement A is wrong and B is correct
250. Pace maker of heart
a) S. A. Node
b) A.V. node
c) A.V. septum
d) I.A.septum

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Biology capsule for SSC CGL by StudyIQ