Question

Give suitable reasons for the following statements: [5]

i) Gametes must be produced by meiosis for sexual reproduction.

ii) Forests tend to bring more rains.

iii) If you uproot a plant from the soil, its leaves soon wilt.

iv) Potato cubes when placed in water increase in size.

v) On a bright sunny day, the leaves of certain plants roll up.​

Answer 1

Answer:

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Answer 2

Answer:

Gametes must be produced by meiosis for sexual reproduction because the numbers of chromosomes are reduced to half during meiosis and then the normal diploid numbers of chromosomes are regained during the process of fertilization.

Forests have large number of plants especially trees. Each plant loses water in the form of water vapour everyday into the atmosphere through transpiration. ... So huge amount of water is escaped into the atmosphere by forests. This increases the moisture in the atmosphere and brings more frequent rains.

Roots of the plant have whole sole responsibility to absorb water and minerals and when plants are uprooted absorption of water stops due to which leaves lacks water that's why leaves wilt.

The potato cell has cell sap more in concentration inside the cell than in the surrounding water. ... Due to the flow of water in the cell, they become turgid and the cubes become firm and increase in size.On a bright Synny day, leaves roll up to decrease the area of the leaf. This reduces the transpiration in leaves helping them to conserve more water.

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