CIE Biology Paper-4: Specimen Questions 48 - 49 of 120

Question number: 48

Essay Question▾

Describe in Detail

Figure shows a plant. They have long roots. What is the reason behind it?

Figure shows a plant – Why they have long roots

Figure shows a plant – Why they have long roots

Figure shows a plant (cactus) mainly found in desert areas

Explanation

Desert plants look very dissimilar from plants native to other areas. They are often swollen, spiny, and have tiny leaves that are rarely bright green. Their strange look is a result of their adaptations in the desert climate. Natural vegetation is very poor in the desert portion. Most of the desert vegetation has long roots to collect water from the deep surface. Cactus have very long roots, which can search water from deep underground. It also stores the water in its stem and leaves. Therefore, it can survive in the hot desert.

Question number: 49

Essay Question▾

Describe in Detail

Use the key to identify each species. Write the letter of each species (A to c) in the correct box beside the key.

 Image shows different kind of insects

Image shows different kind of insects

Image shows different kind of insects, Use the key to identify each species

  1. One pair of wings present…………Go to 2

If two pairs of wings are present…. . Go to 3.

  1. Tip of abdomen without 2 - 3 thread-like tails. (Diptera) (True/False)

Tip of abdomen with 2 - 3 thread-like tails. (Diptera) (True/False)

  1. Sucking mouthparts in the form of a rigid beak (Homoptera) ) (True/False)

Mouthparts not in the form of a rigid beak (Homoptera) (True/False)

  1. Antennae always short and bristly (Odonata) ) (True/False)

Antennae never short and bristly (Odonata) (True/False)

Explanation

  1. One pair of wings present…………Go to 2

If two pairs of wings are present…. . Go to 3.

2. Tip of abdomen without 2 - 3 thread-like tails. (Diptera) (True) (Figure A)

Tip of abdomen with 2 - 3 thread-like tails. (Diptera) (False)

3. Sucking mouthparts in the form of a rigid beak (Homoptera) (True) (Figure B)

Mouthparts not in the form of a rigid beak (Homoptera) (False)

4. Antennae always short and bristly (Odonata) (True) (Figure C)

Antennae never short and bristly (Odonata) (False)

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