Question

Give reasons for the following statements.
1. Plants are autotrophs.
2. Carbon dioxide is necessary for photosynthesis.
3. Leaves are reduced to spines in desert plants like cacti.
4. Photosynthesis purifies atmosphere.​

Answer 1

Answer:

1) plants are autotrophs because they prepare their own food by their own

2)

Answer 2

1. plants are autotrophs because they have chlorophyll in their leaves which helps in trapping sunlight and they prepare food from it.
2. Carbon dioxide is necessary for photosynthesis because without carbon dioxide they can't prepare their food
3. leaves are reduced to spines in desert plants, it is actually a useful modification in these plants. the spines reduces the loss of water
4. photosynthesis purifies atmosphere as by photosynthesis oxygen is released which is really a useful gas...

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