1. 1
BHU MSC BOTANY SOLVED
QUESTION PAPER 2020
Part -1
Lalit paraste
M.sc. Botany
Banaras Hindu University
2. 2
Que 1.Target Board Effect is Caused by??
1.Colletotrichum 2.pyricularia
3.Alternaria. ✓ 4.Helminthosporium
Ans:- 3. Alternaria
➢ Explanation:- 1.Alternaria:- Early symptoms appear on the
Which enlarge in size,and become round to form the
the concentric rings ,hence the symptoms are
Target board effect.
2.pyricularia oryzae:-Rice Blast disease
3.Helminthosporium:-Brown spot on Rice
( Bengal famine)
4.Colletotricum :- Red Rot of sugarcane
3. 3
Que.2.Families of flowering plant book is written by?
1.ATakhtajan. 2.J . Hutchinson✓
3.Bentham &Hooker. 4.Engler &pantle
Ans:-2 .J . Hutchinson
➢ J.Hutchinson:-Book:-The families of flowering plants
➢ A.Takhtajan Book:-A System and Phylogeny Of the flowering plants
➢ Bentham & Hooker Book:-Genera Plantarum
➢ Engler&pantle book:-Die Naturlichen pflanzenfamilies
Que.3.Algae without pyrenoid but having Leucosin granules as reserved
food
belong to??
1.Chlorophyceae 2.pheophyceae
3.Xanthophyceae ✓ 4.Rhodhophyceae
Ans :3.-Xanthophyceae
4. 4
➢ Explanation:-1.Xanthophyceae:-reserved food storage as leucosin
2.Chlorophyceae:-:reserved food storage as starch and
Pyrenoid present.
3.Pheophyceae:-reserved food storage as Lamarine and
Pyrenoid present.
4.Rhodophyceae:-reserved food storage as Floridean
Starch and pyrenoid present.
Que.4.:-The Coprophilic Fungi inhabit??
1.Dead wood. 2.food arrival
3.Decay leaves. 4.Dung Substratum✓
Ans.:-4.Dung Substratum
Que5:-The Concept of n-Dimensional hypervolume niche is Credited
to??
1.Chales 2.MacArthur
3.G.E. Hutchinson.✓ 4.Joseph Grinnell
5. 5
Ans.:-3.G.H Hutchinson
➢ Explanation:-n-dimensional describe the fundamental niche of
species
These hypervolume exit within a space define by a set of
n- independent axes .
Que.6:-synaptonemal complex is associated with??
1.Choromosome Condensation. 2.interchange of chromosome
Segment✓
3.choromosome doubling 4.Chromosome replication
Ans,:- 2.interchange of chromosome segment
Explanation:- 1. synaptonemal complex formed due to interchange of the
Chromosome segments.in prophase 1.
2.Synaptonomal complex is a protein structure that form
between Homologous Chromosome (two pair of sister
6. 6
Chromatids)during meiosis. (Discovered by Moses
&Fawcett1956)
Que .7:-Manoxylic wood refer to ??
1.Hard &Compressed. 2.many ring of xylem
3.single ring of xylem. 4.loose & soft✓
Ans,:-4.loose and soft
➢ Explanation:-1.Manoxylic wood:- non - compact ,large pith ,more
Less xylem ,not commercial
Ex .Cycas
2.Pycnoxylic:-Compact ,more xylem ,Durable ,and
Yield timber
Ex. Pinus
7. 7
Que.8.Which one of the following is incorrect for Solanaceae??
1.Persistant srp al 2.Pariétal placentation✓
3.Carpel -2. 4.oblique ovary
Ans,:-2 .parital placentation
➢ Explanation:- in Solanaceae:- Axile placentation
Que 9.Bordeaux Mixture was discovered by?
1.Milardet ✓ 2.Dickinson
3.Muller 4.Waksman
Ans,:1.Milardet
➢ Explanation:- Bordeaux mixture of Copper Sulphate & Salked like
( CuSO4 +Ca(OH)2)
Fungicide for :- Powdery mildew,Downy mildew
8. 8
Que10.More then two flagella are present on the Swarmer of ?
1.Chlamydomonas. 2.Chara
3.Oedogonium. ✓ 4.Volvox
Ans,:-3.Oedogonium
➢ Explanation:- Oedogonium multi flagellated algae
Chara,volvox , chlamydomonas biflagillated
Que.11.In two species population ,when both population benefited
but the relationship is not obligatory ,it is called as ??
1.Amensalism 2.Commensalism
3.mutualism. 4.proto-cooperation ✓
And,:- 4.proto- cooperation
9. 9
Explanation:-A.).Proto -Cooperation:-Both species population are benefited
(+,+) But they live independently
Ex.1.Bird & Cattle
2.Bird & Crocodile
B.)Amensalism:- (-,0) in Antibiosis:-interaction between two
sp.
One species releases toxic substances and does not permit other
species to grow.
C.)Commensalism :- (+,0). One species benefited other not harmed
Ex.Epiphytes Lianas
D.)mutualism:- Symbiotic association of two species .and they can't live
Independently.(obligatory)
Ex.1.lichen (fungi & algae)
2.Coral reef(algae & Coelenterates)
3.mycorrhiza(Roots & fungi)
10. 10
Que12.Product of Calvin Cycle are??
1.ATP,NADPH ,CO2. 2.Triose Phosphate✓
3.glucose ,ADP,NADP,CO2. 4.ATP,NADPH ,O2
Ans,:-:Triose Phosphate is product of Calvin Cycle (C 3 Cycle)
11. 11
Que13.Monosomic in Diploids for all it's chromosomes is known as??
1.Zea mays. ✓ 2.Dhatura stramonium
3.Viccia faba 4.Nicotiana tabacum
Ans,:-1.Zea Mays
➢ Explanation:-Zea mays is monosomic
Datura stramonium is trisomic
Que14.Amphivasal Vascular bundle is found in stem of ??
1.Bignonia 2.Cucurbita
3.Dracaena. ✓ 4.Fern
Ans:-3. Dracaena
➢ Explanation:- 4 types of Vascular Bundle
1.Collateral vascular bundle
2.Bicollateral vascular bundle
3.Concentric vascular bundle
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4.Radial vascular bundle
1.Collateral vascular bundle:- A vascular bundle in which a strand of
phloem is present external to the strand of xylem on the same radius
side is known as collateral vascular bundle.
● *closed collateral vascular bundle:- cambium absent in between
xylem & phloem. Ex.monocot stem
*Open collateral vascular bundle :- cambium present in between xylem &
phloem .it fascicular cambium
Ex.Dicot stem
2.Bicollateral vascular bundle:- A vascular bundle with phloem situated on
the peripheral and inner side of xylem is known as Bicollateral vascular
bundle.
Ex.Cucurbita
3.Concentric vascular bundle:-A vascular bundle in which one type of
vascular tissue surrounds the other is known as concentric vascular bundle.
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A)Amphivasal vascular bundle:-A vascular bundle in which xylem encircles
the central strand of phloem is known as Amphivasal vascular bundle &also
leptocentric vascular bundle.
Ex.Dracaena ,yucca
B)Amphicribral vascular bundle:-A vascular bundle in which phloem
encircles the central strand of xylem is known as Amphicribral vascular
bundle &also Hadrocentric vascular bundle.
Ex.Selaginella
4.Radial vascular bundle:-A vascular bundle in which the primary xylem and
primary phloem strand are separated from each other by non vascular tissue
they are situated on alternate radii of an axis is known as radial vascular
bundle
Ex.Dicot root
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Que.15.The main source of the atmospheric SO2 is
1.paper industry. 2.industies
✓ 3.fossil fuel combustion. 4.Evaporation of organic Solvent
Ans,:-3.Fossil fuel combustion
➢ Explanation:-The largest source of SO2 in the atmosphere is the burning
of fossil fuel by power plants and other industrial facilities.
Ques.16 .what is correct for marsilea??
1.leaflets are arranged in a pinnate manner. 2.Heterosporous
3.phloem present on both side of xylem 4.xylem lie scattered✓
Ans:- 4. Xylem lie scattered
16. 16
Que.17 Bulbous appendages are found on the Cleistothecium ??
1.Uncinula. 2.Erysiphae
3.Neurospora. 4.Phyllactinia✓
Ans:-4. Phyllactinia
➢ Explanation:- phyllactinia guttata:-P.guttata characterised by large
ascomata ,long narrow appendages with Bulbous swelling at base 2-3
spored asci with large ascospores,the ascomata also have gelatinous
cell with Tufts of hyphae resembling hairs.
It cause powdery mildew
17. 17
Que.18.The Gene whose products are constantly needed for cellular activity
are known as??
1.Regulatory genes. 2.jumping Gene
3.Housekeeping genes. ✓ 4.poly Gene
Ans,:-:3.Housekeeping Genes
➢ Explanation:- in molecular biology, Housekeeping genes are typically
constitutive Gene that are required for that are required for the
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maintenance of basic cellular function and express in all cells of an
organisms under normal and patho-physiological condition
Ex.GAPDH,Ubiquitin ,Actin
Que.19.Phanerophytes are the dominant Component of Vegetation in??
1.Tundra Climate. 2.Desert Climate
3.Tropical moist climate. ✓ 4.Temperate moist climate
Ans,:-3.tropical moist climate
➢ Explanation:-tropical moist climate suitable for phanerophytes and
dominant vegetation in this climate
19. 19
Ques.20.Selective absorption and storage of great variety of molecules
inside living cells??
1.biomagnification. ✓ 2.Bioaccumulation
3.Eutrophication 4.Bioremidiation
Ans,:-2.Bioaccumulation
➢ Explanation:-1.Bioaccumulation :- it refer to the entry of a pollutant or
toxic substance in the food chain
20. 20
2.Biomagnification :- The Toxic substance gets accumulated in the body of
organisms at successive trophic levels at a higher concentration then the
previous trophic level.
Ex .DDT, Pesticides
3.Eutrophication :-when water becomes overly enriched with minerals and
nutrients which induce excessive growth of algae.the process may result in
oxygen depletion of the water body .
4.Bioremidiation :- Bioremediation is the branch of biotechnology that
employs the use of living org.like microbes and bacteria in the removal of
contaminants , pollutants,toxins from soil water and other environments..
21. 21
Que 21.which one of the following wavelengths of light is absorbed by
phycoerythrin ?
1.660 nm. 2.420nm
3.540nm. ✓ 4..610nm
Ans:-3..540nm
➢ Explanation:- 1.phycoerythrin wavelength is 500nm -700nm(Red
pigment)
2.Phycocyanin wavelength is 460nm - 660nm ( blue green)
22. 22
3.Cholrophyll a:- wavelength is 400nm -450nm ( blue green pigment)
4.Chlorophyll b:-wavelength is 450nm-500nm (yellow green pigment)
Que.22 The level of Compaction in DNA achieved by nucleosome sub
structure of chromatin is ??
1).7 fold ✓ 2)10 fold
3)30 fold. 4)42 fold
Ans:-1) 7 fold
➢ Explanation:- 7 fold are formed on the nucleosome.
23. 23
Nucleosomes elicit an initial 7 fold linear compaction of genetic
DNA .They provide a critical mechanism for stable repression of genes and
other DNA dependent activities by restricting binding of trans - acting factor
to cognate DNA sequence…
Que 23The family Asteraceae differ from solanaceae in which of the
following features ??
1.Epipetalous stamens. 2.unilocular ovary ✓
3.Bicerpellery gynoecium 4.Gamopetalous Corolla
➢ Ans:- 2. Unilocular ovary
➢ Explanation:- Asteraceae has unilocular ovary and basal placentation
Que.24 Cellulose is ??
24. 24
1.unbranched chain with beta -1,4 bond ✓
2.Branched chain with alpha - 1,4 and beta -1,6 bond
3.Branched chain with alpha 1,6 and beta 1,4 bond
4.unbranched chain with alpha -1,6 bond
Ans:1.-unbranched chain with beta -1,4 bond
Que.25 Suside Bag of cell are??
1.Lysosomes ✓ 2.Endoplasmic reticulum
3.golgi bodies 4.Vacules
Ans:-1.Lysosome
Que.26.Which Bryophytes were used extensively for dressing wounds during
the first world war??
1.Anthoceros 2.Sphagnum ✓
25. 25
3.funaria. 4.polytrichum
Ans:-2. Sphagnum
➢ Explanation:-1.sphagnum :- it is used in the treatment of acute
haemorrhage and eye disease and also used in skin disease ,wounds
,burns cuts ,..
2.Polytricum :-it is used in dissolve kidney and gall bladder stones
3.marchsntia polymorpha used to cure pulmonary tuberculosis and liver
disease
4. Transgenic Physcomitrella :- used to produce Blood -Clotting factor IX
Que.27.End product of Glycolysis is
1.Pyruvate. ✓ 2.Acetyl CoA
3.NADH. 4.Lactate
Ans:1.-pyruvate
26. 26
➢ Explanation:- end product of Glycolysis is 2 molecule of pyruvate
acid
Que 28 Minute apertus connecting adjacent cells are known as??
1. Plasmodesmata. ✓ 2.Torus
3.Hydathodes. 4.plasma members
Ans:- 1.plasmodesmata
➢ Explanation:-plasmodesmata a narrow thread of cytoplasm that passes
through the cell wall of adjacent plant cells and allows communication
between them .
27. 27
Que.29. Cortical Vascular bundle is found in the stem of ??
1.Nyctanthes. ✓ 2.Bignonia
3.Cucurbita 4.Achyranchus
Ans:-1. Nyctanthes :-
➢ Explanation:-Cortical Vascular bundle is a vascular system which allows
the transportation of water and nutrients through the Voluminous Cortex
of the Nyctanthes .
28. 28
Ques.30.The non -motile male gametes in Rhodophyceae is called??
1.monospore 2.Carpospore
3.Spermatium. ✓ 4.Tetrasore
Ans:-3 Spermatium
➢ Explanation:-spermatium is non -motile male gametes
Que.31 In grazing food chain ,energy passes through
1.three trophic level✓
2.one trophic level
3.four trophic level
4.two trophic level
Ans:- 1.three trophic level
29. 29
Ques.32.The rate of storage of organic matter by consume in excess of
respiratory utilization during the period of measurement in the ecosystem is
termed as ??
1.Gross productivity 2.Primary productivity
3.NPP 4.Secondary productivity✓
Ans:- 4. Secondary productivity
30. 30
➢ Explanation:-The rate of production of new biomass by Consumerism
called Secondary productivity.secondary productivity should not be
divided into gross and net productivity.secondary productivity depends
on primary productivity for energy.
Que.33 Which one is a Halophytic algae ??
1.Nostoc. 2.Vaucheria
3.Dunaliella. ✓ 4.Spirogyra
Ans:-3. Dunaliella
➢ Explanation:- it is halophile green micro - Algae ,found in sea salt field
Que.34. Which puts forward the view that a plant community behaves as a
""superorganism ""?
31. 31
1.R.F Daubenmire. 2.F.E Clement✓
3.J T Curtis. 4.H.Gleason
Ans:- 2. F.E. Clement
Que.35 Retort cells are found in??
1.pogonatum. 2.pellia
3.porella. 4.Sphagnum✓
Ans:- 4. Sphagnum
➢ Explanation:-retort cell retains water in sphagnum cortex .
Que.36 Oil reserve food material is found in ??
1.Chlorophyceae. 2.Rhodophyceae
3.Xanthophyceae.✓ 4.Pheophyceae
32. 32
Ans :- 3. Xanthophyceae
Que 37 Progressive increase of toxic Chemical in Successive Higher level
organisms is known as ?
1.Bilological Magnification ✓
2.Ecological magnification
3.Ecotoxicology
4.Eutrophication
Ans.:-1.Biological magnification.
➢ Explanation:-Biological magnification is any concentration of a toxin
,such as pesticides,in the tissue of organisms at successive higher
levels in a food chain .
33. 33
Que.38.when Sporangia in a fern develop from a single initial cell it is
called??
1.Asporangiate 2.Eusporangiate
3.Leptosporangiate ✓ 4.Hetersporangiate
Ans,:-3.Leptosporangiate
➢ Explanation:-small ,Specialized Sporangia developing from a single
initial cell , producing a small,definite number of spores ..
34. 34
Que.39 Species Occurrence restricted to a small area is called ??
1.Alien. 2.Endemic ✓
3.Aeolian 4.Ecotype
Ans,:- 2.Endemic
35. 35
➢ Explanation:-Endemism is the ecological state of a species being native
to a single defined geographical location .
Que.40 Which of the following is Correct sequence of stages in cellular
Respiration??
1.Glycolysis,Citric cycle and Oxidative Phosphorylation✓
2.Oxidative Phosphorylation,Citric cycle and Glycolysis
3 Glycolysis, Oxidative Phosphorylation and Citric cycle
4.Citric Cycle,Oxidative Phosphorylation and Glycolysis
Ans::-1. Glycolysis,Citric cycle and Oxidative Phosphorylation
