IGCSE Biology Paper-1: Specimen Questions with Answers 65 - 68 of 109

Question number: 65

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Question

Which is the pattern of self-pollination

Choices

Choice (4) Response

a.

Pea nut

b.

Grapes

c.

Apple

d.

All a. , b. and c. are correct

Answer

d.

Explanation

self-pollination occur within same flower.

Question number: 66

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Question

If you are B positive you can donate blood to-

Choices

Choice (4) Response

a.

O+

b.

Only B+

c.

All type

d.

B + and AB+

Answer

d.

Explanation

  • Explanation- In blood Group B– only the B antigen on red cells and A antibody present in the plasma.
Showing Blood group charts

Showing Blood Group Charts

In blood Group B – only the B antigen on red cells and A antibody present in the plasma.

Question number: 67

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Question

Urine concentration is control through-

Choices

Choice (4) Response

a.

Cholesterol

b.

ADH

c.

Oxytocin

d.

Glucagon

Answer

b.

Explanation

Antidiuretic hormone is also known as vasopressin, ADH acts on the kidneys and control urine concentration.

Question number: 68

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Question

Where the location of cranium and humerus in human body?

Diagram of the human skeleton

Diagram of the Human Skeleton

Finding cranium and humerus in the system above

Choices

Choice (4) Response

a.

E & D

b.

A &B

c.

A & D

d.

E & C

Answer

c.

Explanation

The cranium is the part of the skull that protects the brain. The cranium is the superior part of the skull without the mandible. The humerus is the largest bone in the arm. Its smooth, ball-like head fits into the scapula and systems our “ball and socket” shoulder joint.