IGCSE Biology Paper-2: Specimen Questions with Answers 44 - 46 of 103

Question number: 44

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MCQ▾

Question

Which part is anther?

Image shows parts of the flower

Image Shows Parts of the Flower

Image shows different parts of the flower and identify one of them

Choices

Choice (4) Response

a.

Part C

b.

Part D

c.

Part B

d.

Part A

Answer

a.

Explanation

Anther is the part of a stamen that produces and contains pollen and is usually borne on a stalk

Question number: 45

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Match List-Ⅰ List-Ⅱ▾

Question

Match the column I and II

List-Ⅰ (I Disease) List-Ⅱ (II Causing Organism)

(A)

Gonorrhea

(i)

Neisseria

(B)

Diphtheria

(ii)

Vibrio

(C)

Cholera

(iii)

Clostridium

(D)

Leprosy

(iv)

Corynebacterium

(E)

Tetanus

(v)

Mycobacterium

Choices

Choice (4) Response
  • (A)
  • (B)
  • (C)
  • (D)
  • (E)

a.

  • (i)
  • (v)
  • (ii)
  • (iv)
  • (iii)

b.

  • (i)
  • (iv)
  • (ii)
  • (v)
  • (iii)

c.

  • (iv)
  • (i)
  • (ii)
  • (v)
  • (iii)

d.

  • (v)
  • (i)
  • (iii)
  • (ii)
  • (iv)

Answer

b.

Explanation

Diphtheria is caused by the corynebacterium bacterium. Its most commonly spread through person-to-person contact. A bacterium called Vibrio cholerae causes cholera infection.

Tetanus is a serious infection caused by Clostridium tetani bacteria, which produce a toxin that affects the brain and nervous system.

Leprosy is caused mainly by Mycobacterium leprae, a rod-shaped bacillus.

Gonorrhea is caused by Neisseria gonorrhoeae, a bacterium that can grow and multiply easily in mucus membranes of the body.

Question number: 46

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MCQ▾

Question

What is the main function of multipolar neurons-?

Choices

Choice (4) Response

a.

Carry messages from the body’s sense receptors to the CNS

b.

Form all the neural wiring within the CNS

c.

Carry signals from the CNS to the muscles and glands

d.

All of the above

Answer

c.

Explanation

Carry messages from the body’s sense receptors to the CNS is the function of sensory neurons and making neural wiring within the CNS is the function of pseudo polar cells. Multipolar neurons carry signals from the CNS to the muscles and glands. These neurons have many processes originating from the cell body.