IGCSE Biology Paper-1: Specimen Questions with Answers 85 - 87 of 109

Question number: 85

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Question

Figure shows a water cycle. Part X may be-

Figure shows a water cycle - Find X

Figure Shows a Water Cycle - Find X

Figure shows a water cycle with its different steps

Choices

Choice (4) Response

a.

Evaporation & Transpiration

b.

Infiltration & Runoff

c.

Transpiration & Condensation

d.

Photosynthesis & Condensation

Answer

c.

Explanation

Transpiration is the evaporation of water from plants and Condensation is the process, which change of water from water vapor into liquid water.

Question number: 86

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Question

Figure shows an energy flow in an ecosystem. Loss of energy occur due to-

Figure shows an energy flow in an ecosystem

Figure Shows an Energy Flow in an Ecosystem

Figure shows an energy flow in an ecosystem identify reason behind energy loss

Choices

Choice (4) Response

a.

Digestion and excretion

b.

Photosynthesis and digestion

c.

Respiration and heat loss

d.

Photosynthesis and excretion

Answer

c.

Explanation

According to second law of thermodynamics transformations of energy always result in some loss of energy and this loss occur due to respiration and heat loss.

Question number: 87

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Question

Which part is an organ of human being?

Choices

Choice (4) Response

a.

Ligaments, stomach, lungs

b.

Muscle tissue, liver, lungs

c.

Heart, lungs liver

d.

Blood, joints, heart

Answer

c.

Explanation

Functions of body are conducted by organs. Organ is a structure like, the heart, lungs, liver, eyes, and stomach that do their different functions. An organ is made of several types of tissue and several types of cells. For example, the heart have muscle tissue that contracts to pump blood, fibrous tissue that makes up the heart valves, and special cells that maintain the rate and rhythm of heartbeats.