11. Which virus belongs to the family Caliciviridae?
[A] Hepatitis B virus
[B] Hepatitis D virus
[C] Hepatitis E virus
[D] All of these
Show Answer
Correct Answer: C [Hepatitis E virus]
Notes:
The Caliciviridae family contains five genera are Norovirus, Sapovirus, Lagovirus, Vesivirus, and Nebovirus.
12. Plants that reproduce by spores are classified into which of the following?
[A] Bryophytes
[B] Sporophytes
[C] Cryptogams
[D] Thallophytes
Show Answer
Correct Answer: C [Cryptogams]
Notes:
A cryptogam is a plant or plant-like organism that reproduces by spores without flowers or seeds.
13. Chemotaxis is a phenomenon of__?
[A] swimming away of bacteria
[B] swimming towards a bacteria
[C] swimming away or towards of bacteria in presence of chemical compound
[D] All of the above
Show Answer
Correct Answer: C [swimming away or towards of bacteria in presence of chemical compound]
Notes:
Chemotaxis is a phenomenon of swimming away or towards of bacteria in presence of chemical compound.
14. Which of the following is an indicator of SO2 pollution of air?
[A] Puffballs
[B] Mushrooms
[C] Mosses
[D] Lichens
Show Answer
Correct Answer: D [Lichens]
Notes:
Lichens are good indicators of sulfur dioxide pollution in the environment. Lichens are relationships between fungi and algae.
15. Fruits are not found in gymnosperm plants because__?
[A] They are seedless plants
[B] They are not pollinated
[C] They have no ovary
[D] Process of fertilization does not take place in them
Show Answer
Correct Answer: C [They have no ovary]
Notes:
Fruits are not found in gymnosperm plants because they have no ovaries. Gymnosperms belong to the Kingdom Plantae and the sub-kingdom Embryophyta.
16. It is the uppermost part or receptive end of the carpel in the gynoecium of a flower, what is it called?
[A] Stigma
[B] Style
[C] Ovary
[D] None of these
Show Answer
Correct Answer: A [Stigma]
Notes:
Stigma is the uppermost part or receptive end of the carpel in the gynoecium of a flower. The stigma, style and ovary are collectively known as pistil.
17. Which is a factor promoting cross-pollination?
[A] unisexual flowers
[B] Self-incompatibility
[C] Non-Synchronization
[D] all of these
Show Answer
Correct Answer: D [all of these]
Notes:
Unisexual flowers, Self-incompatibility, and Non-Synchronization are the factors promoting cross-pollination
18. Which of the following is not a part of the flower?
[A] Petals
[B] Sepals
[C] Pistil
[D] Pericarp
Show Answer
Correct Answer: D [Pericarp]
Notes:
The pericarp is a part of the fruit. Petals, Sepals, Pistil, and Stamen are parts of the flower.
19. Which characters are not typical to class Mammalia?
[A] Alveolar lungs
[B] Seven cervical vertebrae
[C] Thecodont dentition
[D] Ten pairs of cranial nerves
Show Answer
Correct Answer: D [Ten pairs of cranial nerves]
Notes:
Alveolar lungs, Seven cervical vertebrae, and Thecodont dentition are characters of class Mammalia whereas Anamniotes have 10 pairs of cranial nerves.
20. What is the shell of a mollusk produced by?
[A] Radula
[B] Thorax
[C] Mantle
[D] Abdomen
Show Answer
Correct Answer: C [Mantle]
Notes:
A mollusk shell is formed, repaired, and maintained by a part of the anatomy called the mantle.
