1. The tough exoskeleton that serves for protection among the trilobites and crayfishes are ____________.
A. Chitin
B. Pulp
C. Calcium carbonate
D. Spicules
2. Which part of the brain acts as the
center of our emotions?
A. Medulla
B. Cerebrum
C. Cerebellum
D. Thalamus
3. In the flowering plants, nectar and
brightly colored petals attract insects. What process is most directly aided by
these adaptations?
A. Pollination
B. Fertilization
C. Differentiation
D. Germination
4. Smooth muscles are generally found:
A. At the joint
B. In the digestive system
C. In the heart
D. Attached to the skeleton
5. What do you call the small, hair-like
structures which line the inside wall of the small intestine and which greatly
assist in the speeding up of food absorption?
A. Cilia
B. Villi
C. Alveoli
D. Duodena
6. In
which part of the rice plant is sugar manufactured?
A. Stem
B. Roots
C. Leaves
D. All of the above
7. Some bacteria are classified as
saprophytes because they are organisms which:
A. Contain vascular bundles
B. Feed on other living things
C. Feed on dead organic matter
D. Manufacture food for photosynthesis
8. Studies show that there are parts of
the body that have lost their usefulness and which may later disappear. What
are these organs called?
A. Extinct
B. Vestigial
C. Residual
D. Fossilized
9. Who proposed the theory of evolution
that is based on natural selection?
A. Charles Darwin
B. Watson
C. Gregor Mendel
D. Lamarck
10. Which organism could be classified as
a producer in a community?
A. Plant
B. Animal
C. Carnivore
D. Herbivore
11. Birds shed off feathers at least once
a year through a process called ________.
A. Migrating
B. Skinning
C. Molting
D. Furrowing
12. Of the following organisms, which are
included under Kingdom Plantae?
A. Fungi
B. Prokaryotes
C. Magnolidae
D. Protozoa
13. Substances which cause chemical
changes in foods are called?
A. Vitamins
B. Red cells
C. Enzymes
D. Hormones
14. Which
of the following pairs demonstrates symbiosis?
A. Bee and flower
B. Monkey and banana
C. Chick and corn plant
D. Termites and wood
15. Some genetic disorders are caused by
the damage to DNA, which cannot be repaired. This shows _________.
A. Mutation
B. Pathology
C. Embryology
D. Speciation
16. The appendix, though a part of the
large intestine, has no digestive function. It is therefore called ___________.
A. A Heterogeneous organ
B. A vestigial structure
C. An addendum organ
D. An analogous structure
17. Animals which live on land but return
to the water to breed
A. Reptiles
B. Mammals
C. Amphibians
D. Crustaceans
18. Which among the following is the only
method of contraception that has 100% success rate?
A. Injectable contraceptives
B. Withdrawal method
C. Abstinence
D. Daily oral contraceptive pills
19. Polysaccharides, triglycerides,
polypeptides, and nucleic acids are classified as
A. Acids and bases
B. Macromolecules
C. Compounds
D. Mixtures
20. Dengue is an infectious disease
transmitted by an organism classified under which phylum?
A. Arthropoda
B. Echinodermata
C. Mollusca
D. Cnidaria