11. Mammology is the branch of science related to the study of?
[A] mammals
[B] breasts
[C] mollusks
[D] none of these
Show Answer
Correct Answer: A [mammals]
Notes:
Mammology is a branch of biology that deals with the study of mammals.
12. Germplasm theory was given by which of the following biologists?
[A] August Weismann
[B] Georges Cuvier
[C] Arthur Tansley
[D] None of these
Show Answer
Correct Answer: A [August Weismann]
Notes:
Germ-plasm theory, the concept of the physical basis of heredity, articulated by the 19th century biologist August Weismann.
13. Red algae are known as__?
[A] Chlorophyceae
[B] Rhodophyceae
[C] Phaeophyceae
[D] None of these
Show Answer
Correct Answer: B [Rhodophyceae]
Notes:
Rhodophyceae (red algae) are a class of seaweeds, most of which are reddish in color, with a filamentous or membranous basic shape.
14. Which of the following are blue-green algae?
[A] Prokaryotes
[B] Eukaryotes
[C] Both 1 and 2
[D] Neither 1 nor 2
Show Answer
Correct Answer: A [Prokaryotes]
Notes:
Blue-green algae or cyanobacteria are prokaryotes. They lack membrane bound organelles and a nucleus.
15. Which of the following is required by viruses for growth?
[A] bacteria
[B] plants
[C] animals
[D] living cells
Show Answer
Correct Answer: D [living cells]
Notes:
Virus, infectious agent of small size and simple structure that can multiply only in living cells of animals, plants or bacteria.
16. The change from lysogeny to lymph is usually induced by?
[A] ultraviolet light
[B] chemicals
[C] irradiation
[D] all of these
Show Answer
Correct Answer: A [ultraviolet light]
Notes:
The change from lysogeny to lymph is usually induced by ultraviolet light. Lysogeny is a type of life cycle that occurs when a bacteriophage infects certain types of bacteria.
17. The sporophytic and gametophytic stages are independent in__?
[A] Bryophytes
[B] Pteridophytes
[C] Phaeophytes
[D] Gymnosperms
Show Answer
Correct Answer: B [Pteridophytes]
Notes:
Pteridophytes show alternation of generations, in which they exhibit a dominant sporophytic generation with an inconspicuous gametophytic generation. The sporophyte is differentiated into root, stem and leaves whereas, the small and inconspicuous gametophyte is independent and autotrophic.
18. Megasporangium in Gymnosperms is also called as__?
[A] Macrosporangiate
[B] Nucellus
[C] Microsporangium
[D] Male strobili
Show Answer
Correct Answer: B [Nucellus]
Notes:
Megasporangium in Gymnosperms is also called Nucellus. Megasporangium is the structure in certain spore-bearing plants in which the megaspores are formed.
19. Which of the following provides structural support to the plant?
[A] lignin
[B] companion cells
[C] Sclerenchyma
[D] sieve tubes
Show Answer
Correct Answer: A [lignin]
Notes:
Xylem fibers and tracheids are composed of lignin, and this provides structural support to the plant.
20. An anaerobic process in which energy can be released from glucose even when oxygen is not available is called__.
[A] Putrefaction
[B] Fermentation
[C] Glycolysis
[D] None of these
Show Answer
Correct Answer: B [Fermentation]
Notes:
An anaerobic process in which energy can be released from glucose even when oxygen is not available is called Fermentation.
