CIE Biology Paper-5: Specimen Questions 47 - 49 of 62

Question number: 47

Essay Question▾

Describe in Detail

Figure shows lilies, which are aquatic plants.

Figure shows lily plant

Figure shows lily plant

Figure shows lilies, which are aquatic plants, find out its aquatic adaptations

Suggest and explain an adaptation of lilies to its water habitat.

Explanation

  • Weak stems are an adaptation, which allow water lilies to focus their energy and resources on expanding their leaf network, rather than continually strengthening a stem.
  • Stomata’s are the pore-like openings on the surfaces of leaves which allow the exchange of oxygen and carbon dioxide
  • The leaves of water lilies lay flat in the water, rather than curling or crimping like the leaves of some other species. This maximizes their exposure to sunlight, and increases their efficiency in photosynthesis process.

Passage

To know the effect of light on photosynthesis rate set the things like that given in diagram. When you do such experiment, you will notice that some bubbles are collected at the top of the test tube

Question number: 48 (1 of 2 Based on Passage) Show Passage

Short Answer Question▾

Write in Short

Name the gas that is collected at the top of the test tube?

A set up is used to know the effect of light

A set up is used to know the effect of light

A set up is used to know the effect of light on photosynthesis rate in which some bubbles are collected at the top of the test tube

Explanation

Oxygen gas is produced at the top of the test tube

Question number: 49 (2 of 2 Based on Passage) Show Passage

Short Answer Question▾

Write in Short

What is the relationship between intensity of light and the quantity of gas collect on the test tube?

Explanation

If there is high intensity of light the greater amount of oxygen gas will collect at the test tube.

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