IGCSE Biology Paper-2: Specimen Questions with Answers 62 - 64 of 103

Question number: 62

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Question

The heart beat/rate per minute in some mammal like human and cat is about?

Choices

Choice (4) Response

a.

Human- 60 - 100bpm Cat-140 - 220bpm

b.

Human-40 - 60bpm Cat-90 - 110bpm

c.

Human-110 - 130bpmCat-270 - 300bpm

d.

Human- 100 - 110bpm Cat-86 - 100bpm

Answer

a.

Explanation

Heart beat or heart pulse is the speed of heartbeat, which is measured by number of contractions of the heart per unit of the time. The normal resting adult human heart rate ranges from 60–100 bpm and the normal heart rate for a healthy adult cat is between 140 and 220 beats per minute.

Question number: 63

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Question

Which statement is correct for Angiosperm?

Choices

Choice (4) Response

a.

Xylem tracheid

b.

Female gametophyte develops in ovaries of flower

c.

Female gametophyte develops in female cone

d.

None of the above

Answer

b.

Explanation

Angiosperms are seed-bearing vascular plants. Their reproductive structures are flowers in which female gametophyte develops in ovaries of flower.

Question number: 64

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Question

The diagram shows the external features of an animal.

Figure shows an external feature of an organism

Figure Shows an External Feature of an Organism

Above figure is showing some external features of animals to identify its phylum

To which group does the animal belong?

Choices

Choice (4) Response

a.

Mollusca

b.

Arthropods

c.

Annelids

d.

Nematodes

Answer

a.

Explanation

Octopuses is a cephalopod Mollusca of order Octopoda. It has two eyes and eight arms. An octopus has a beak or rostrum in the center of arms and it has no internal and external skeleton.