IGCSE Biology Paper-1: Specimen Questions with Answers 69 - 71 of 109

Question number: 69

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Question

Define x and y in a plant cell.

shows image of plant cell

Shows Image of Plant Cell

Finding x and y in the picture above

Choices

Choice (4) Response

a.

Phloem and lower epidermis

b.

Cuticle and xylem

c.

Vascular bundle and mesophyll

d.

upper epidermis and stoma

Answer

d.

Explanation

Upper epidermis is the upper surface which is enclosed with a waxy, watertight cuticle, which helps to decrease water loss from the leaf. And stoma are the minute pore found in epidermis.

Question number: 70

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Question

What is the full form of ACTH?

Choices

Choice (4) Response

a.

Active cardio tropic hormone

b.

Adrenaline corticitropic hormone

c.

Adrenaline cardiotropic hormone

d.

Adrenocorticotropic hormone

Answer

d.

Explanation

this is the full form of ACTH is Adrenocorticotropic hormone

Question number: 71

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Question

The diagram shows energy pyramid.

Diagram shows energy pyramid

Diagram Shows Energy Pyramid

Finding x, y and z in above diagram

Define x, y, and z in above picture.

Choices

Choice (4) Response

a.

X- Autotrophs y- carnivore z-herbivore

b.

X-carnivore y- herbivore z- producer

c.

X-herbivore y-carnivore z- autotrophs

d.

X- producer y-herbivore z-carnivore

Answer

d.

Explanation

Energy pyramid is always upright. Its shape displays how the amount of useful energy that enters each tropic level, chemical energy in the form of food, decreases as it is used by the entities in that level.