IGCSE Biology Paper-3: Specimen Questions with Answers 99 - 102 of 358

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Passage

Figure below shows an insect pollinated flower of rose sweet pea.

Rose Sweet Pea, Which is an Insect Pollinated Flower

Question 99 (1 of 3 Based on Passage)

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Explain how a feature, visible in, suggests that this flower is insect pollinated.

Explanation

Insect pollinated flowers have large colored petals which attracts insects. Pollen often sticky or spiky, anthers firm and inside flower, stigma present inside the flower.

Question 100 (2 of 3 Based on Passage)

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Give three examples of Wind and Insect Pollinated plants.

Explanation

Examples of Wind Pollinated and Insect Pollinated Plants

Question 101 (3 of 3 Based on Passage)

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Suggest two characteristics, which shows the difference between insect-pollinated flowers and wind pollinated flowers.

Explanation

(i) Insect pollinated flowers are bright with nectar and wind pollinated flowers are dull and nectar less.

(ii) Insects pollinated flower produce small amount of pollen grains and wind pollinated flowers produce large amount of pollen grains.

Question 102

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Homeostasis is the property of a system in which variables are regulated so that internal conditions remain stable and relatively constant.

Write two importance of homeostasis

Explanation

(a) To maintain internal environment of the organisms especially higher vertebrates in a steady and balance state.

(b) To establish optimum conditions of organism.

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