11. Turmeric is obtained from which part of the plant?
[A] Fruit
[B] Stem
[C] Root
[D] Flower
Show Answer
Correct Answer: B [Stem]
Notes:
Turmeric is the rhizome or underground stem of a ginger-like plant. It is usually available under ground, as a bright yellow, fine powder.
12. Which of the following is done by an Antigen?
[A] Lowers body temperature
[B] destroys harmful bacteria
[C] triggers the immune system
[D] is used as an antidote to poison
Show Answer
Correct Answer: C [triggers the immune system]
Notes:
An antigen is any substance that causes your immune system to produce antibodies against it. An antigen may be a substance from the environment, such as chemicals, bacteria, viruses, or pollen. An antigen may also form inside the body.
13. With reference to the blood in a normal person, which one of the following statements is correct?
[A] Compared to arteries, veins are less numerous and hold less of the body’s blood at any given time
[B] Blood cells constitute about 70 per cent of the total volume of the blood
[C] White Blood Cells (WBC) are made by lymph nodes only
[D] The blood has more platelets than WBC
Show Answer
Correct Answer: D [The blood has more platelets than WBC]
Notes:
Blood has more platelets than corpuscles. A microlitre of blood contains 5,000-10,000 of White blood cells (WBC) and 150,000-500,000 platelets.
14. The science of histology is related to which of the following studies?
[A] Tissues
[B] Cells
[C] Algae
[D] Fungi
Show Answer
Correct Answer: A [Tissues]
Notes:
Histology, also known as microscopic anatomy or microanatomy, is the branch of biology that studies the microscopic anatomy of biological tissues.
15. In which of the following cells are chloroplasts present?
[A] plants
[B] algae
[C] Both 1 & 2
[D] Neither 1 nor 2
Show Answer
Correct Answer: C [Both 1 & 2]
Notes:
Chloroplasts are present in the cells of all green tissues of plants and algae. Chloroplasts are also found in photosynthetic tissues that do not appear green.
16. Sterile stamens are called which of the following?
[A] Epipetalous
[B] Monadelphous
[C] Staminode
[D]
Epiphyllous
Show Answer
Correct Answer: C [Staminode]
Notes:
A staminode often has rudimentary, sterile or abortive stamens that do not produce pollen.
17. Bignonia unguiscati is an example of which of the following?
[A] Leaflet Hooks
[B] Leaf Roots
[C] Scale Leaves
[D] Leaf Spines
Show Answer
Correct Answer: A [Leaflet Hooks]
Notes:
Leaflet Hooks is the terminal leaflets of the leaf become modified into hook-like structures that help them to climb. Bignonia unguiscati is an example of this.
18. Which of the following are pneumatophores?
[A] that grow in swampy areas have roots growing vertically upwards
[B] the primary root is replaced by a large number of roots
[C] are bushy roots in which thin, moderately branching roots
[D] None of these
Show Answer
Correct Answer: A [that grow in swampy areas have roots growing vertically upwards]
Notes:
Roots of some plants growing in marshy areas grow vertically upwards to obtain oxygen for respiration. These roots are known as pneumatophores.
19. Which of the following is an example of Phylum Arthropoda?
[A] Octopus
[B] Starfish
[C] Scorpion
[D] None of these
Show Answer
Correct Answer: C [Scorpion]
Notes:
Scorpion is an example of Phylum Arthropoda. They are triploblastic, coelomate, bilaterally symmetric and their body is protected by a hard covering called an exoskeleton, which is made of chitin.
20. Comb jellies, sea gooseberries, sea walnuts are examples of__.
[A] Cnidaria
[B] Aschelminthes
[C] Porifera
[D] Ctenophores
Show Answer
Correct Answer: D [Ctenophores]
Notes:
Comb jellies, sea gooseberries, sea walnuts are examples of Ctenophores. Ctenophora includes a group of marine invertebrates.
