IGCSE Biology Paper-3: Specimen Questions with Answers 123 - 125 of 230

Question number: 123

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Fish and tree frog are at the pictures below. Write the adaptation under each animal, and tell how it helps the living thing survive.

Figure shows a picture of fish

Figure Shows a Picture of Fish

Explanation

Fish have gills. Up to 80 % of a fish’s body is made of muscle. Fish muscles are packed along its sides. That is where a fish gets most of its swimming power. Fishes are generally covered with scales

Figure shows a picture of tree frog

Figure Shows a Picture of Tree Frog

Adaptation of tree frogs is its beautiful coloration as they spend most of their days camouflaged on the underside of a leaf. Bright colors are hidden by closing its eyes and tucking its feet beneath its body while sleeping. If alarmed by predator, the sudden appearance of these colors may disinterest the predator. They have suction cups on their toes to enable it to climb trees and on leaves

Passage

Picture shows a food web.

Figure shows a typical food web

Figure Shows a Typical Food Web

Question number: 124 (1 of 2 Based on Passage) Show Passage

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If all the wood mice were killed why would the number of foxes likely decrease?

Explanation

Fox feed wood mouse in such food web; if wood mice were, killed foxes will get less food. So they will decrease in number.

Question number: 125 (2 of 2 Based on Passage) Show Passage

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If all the wood mice were killed?

Explanation

Population of corn will increase