Science and Technology
Q u i m e s t r a l E x a m
Name: __________________________________________________ ID Number: ____________ 9no de E.B.S. ________
Teacher:Juan Francisco García Date: ______________
Before you start, read carefully each instruction, take your time to answer, check your spelling and grammar
and be sure to write down your full name and ID number on the spaces assign for it. The exam is graded over
100 points. During the test you cannot use any dictionary, electronic device and it´s forbidden to ask for any
other material. Best of lucks to you.
I. IN THE FOLLOWING SECTION, RELATE THE CONCEPTS TO THE CORRECT MEANING. (40 Points Total)
1. In the nexttable,write down the letterof the concept related to the correct meaning. (1 point each
answer, 10 points total)
CONCEPT MEANING LETTER
RADULA The basic structural,functionaland origin unitof life.
CELL Mouthpiece of mollusksthatcontainscalcium structureslike teeth
and help themto digestfood.
CYTOPLASM A substancethatisneeded to keep a living thing alive and to help it
ENERGY Layer of the mollusksbody thathelpsto develop theshell.
NUTRITIENT A completechangeof form,as part of naturaldevelopment.
CEPHALOTHORAX All theliving material inside the cell exceptforthe nucleusthat
MANTLE Division of the body of somearthropodswherethehead is fusion
METAMORPHOSIS The relationship between two differentliving creaturesthatlive close
togetherand depend on each other in particularways,each getting
SYMBIOSIS The ability to do work.
INVERTEBRATE An animal organismwhich do nothavean endoskeleton madeof
2. In the followingsection,write downthe meaningof the followingwords.(1 point each answer, 10
g. OIL: ________________________________________________________________________
h. FOSSIL FUELS: ________________________________________________________________
i. NUCLEAR FUSION:____________________________________________________________
j. EOLIC ENERGY: _______________________________________________________________
3. Complete the followingstatementswiththe words that are missing.(1 point each answer,20
a. Animalsin the Phylum____________________ are informally known assponges.
b. The _______________ cycle is the processnecessary forthecreation of fossilfuels.
c. The wateris recognized asa ______________ resourcedueto its shortcycle.
d. The paramo is a biome of such importancebecauseof the conservation of the
e. The ________________ energy is produced by themechanicvibrationsof the air.
f. The Phylum___________________ is divided in 4 fourclasses,but they are well known
g. Turbelaria is known by the______________ cellular layers they have.
h. Annelida are distinguished fromotherwormsby theirbody _________________.
i. Arthropodsaredivided into three groupsthatarecalled ________________________,
_____________________ and ______________________.
j. The mostdistinctive featurethatroundwormspresentisa ___________ _____________.
k. Sand dollar,sea starsand sea urchinsare ______________________.
l. Arthropods presents___________________ symmetry.
m. Crustaceanshave________________ pairsof legs.
n. The sun,the wind and the wavesareresourcesfor_______________________ energy.
o. The cells thatmovethrough themesohylin spongesand havepseudopodia arecalled
p. The ______________________ is a large openingsfound in spongeswerethewaterflowsout.
q. The cnidocytescontain an specialized cnidaecalled _____________________, which contains
a stinging thread thatcan penetratethe body wall of the cnidarian`sprey.
II. IN THE FOLLOWING SECTION, SELECT THE CORRECT ANSWER FOR THE NEXT STATEMENTS. (40 Points Total)
4. TRUE OR FALSE. Choose if the statement is True or False. The following section applies the rule of
success minus mistake. For each mistake you have, you lose one of your successful answers. (1 point
each answer, 20 points total)
a. Coral reefs provide habitats for many species. ( )
b. Cnidarians can be divided into polyps, that are the mobile form, and medusas, which are the
sessile form. ( )
c. Nematodes are one of the less diverse and abundant groups in the soil and in aquatic
habitats. ( )
d. Molluscs includes snails, clams, squids, crabs, bivalves and octopuses. ( )
e. Echinoderms share a radial symmetry with the roundworms. ( )
f. Many jellies are bioluminescent and can live in abyss depths. ( )
g. A planarian´s head is equipped with several pairs of light-sensitive eyespots and lateral flaps
that function mainly to detect specific chemicals. ( )
h. Platyhelminthes species are not parasites and instead they feed on the dead animals. ( )
i. The cell nucleus is the control center of all the metabolic functions in the cell. ( )
j. Onethe principles of the Cell´s Theory states that all living beings, including virus are made of
cells. ( )
k. Despite their apparent differences, all mollusks have a similar body plan. ( )
l. Many crustaceans feed by using a straplike organ called a radula. ( )
m. Nudibranchs, or sea slugs, are an example of marine flatworms. ( )
n. Cephalopods undergo a distinctive developmental process known as torsion. ( )
o. Octopuses are considered among the most intelligent invertebrates. ( )
p. The cell wall is a characteristic only found in bacteria and animal cells. ( )
q. Most leeches inhabit contaminated water, but there are also marine species and terrestrial
leeches, which live in moist vegetation. ( )
r. The cephalothorax and the abdomen are characteristics only from insects. ( )
s. The cheliceraes are clawlike feeding appendages found in crustaceans and insects. ( )
t. In the complete metamorphosis, the young (nymphs) resemble adults but are smaller, have
different body proportions, and lack wings. ( )
5. MULTIPLE CHOICES. Select the correct answer and make a circle around it. The following section
appliesthe rule of successminus mistake. For each mistake you have, you lose one of your successful
answers. (1 point each answer, 20 points total)
a. Unlike plant cells, animal cells do not have
iii. cell walls.
iv. cell membranes.
b. If a cell contains a nucleus and membrane-bound organelles, it is
iii. an animal cell.
c. An animal that has distinct left and right sides shows
i. radial symmetry.
iii. several planes of symmetry.
iv. bilateral symmetry.
d. Which term is NOT associated with sponges?
e. Which of the following best describes the feeding habits of sponges?
ii. filter feeders
f. Cnidocytes help a cnidarian survive by
i. storing food.
ii. forming colonies.
iii. paralyzing prey.
iv. providing movement.
g. Which are the simplest animals to have body symmetry?
h. The structure in the cells that produce the proteins are called
i. A characteristic of cnidarians is that they are
i. found only in warm, tropical waters.
ii. carnivorous animals.
iii. named for their body symmetry.
iv. all of the above
j. Coral reefs occur in areas where there are
i. high levels of sediments.
ii. very deep waters.
iii. high levels of light.
iv. very cool waters.
k. A non-renewable resource will be
l. Free-living flatworms, most of which live in marine environments or fresh water, are
m. Cells digest food using an specialized vacuole called:
i. Golgi Apparatus
ii. Rough Endoplasmatic Reticulum
n. Roundworms have a
i. one-way digestive tract.
ii. true coelom.
o. Which of these animals has a true coelom?
i. filarial worm
p. Earthworms benefit gardeners because their tunnels provide passageways for
iii. plant roots and water.
q. The thin layer of tissue that covers a mollusk’s body is called the
iii. visceral mass.
r. Which of the following habitats do arthropods occupy?
i. the sea
ii. the land
iii. the air
iv. all of the above
v. only i and ii
s. Arthropods are classified based on the number and structure of their
i. eyes and wings.
ii. body segments and appendages.
iii. muscles and bones.
iv. gills and hearts.
t. If a butterfly touches sugar water with one of its legs, it usually will begin to feed. If it
touchessalt water,it usuallywill not feed.The most likelyexplanation forthis difference in
response is that butterflies
i. cannot tell the difference between sugar water and salt water.
ii. can distinguish sugar water from salt water by sight.
iii. use the ears behind their legs to distinguish sugar water from salt water.
iv. have chemical receptors for taste on their legs.
III. IN THE FOLLOWING SECTION ANALYZE AND ANSWER THE FOLLOWING QUESTIONS. (20 Points Total)
6. Name the following structures in the next image and state their function. (1 point per name and 1
point per explanation, 6 points total)
7. In the following images, look at them carefully, analyze and describe the type of energy they are
producing. (1 Point each answer, 5 Points Total)
8. In the following images, differentiate the type of symmetry that they have (1 point per answer, 3
A. B. C. D. E.
A. B. C.