Question

L. HOTS questions
1. All seeds of a plant do not grow into new plants. Why?
2 silk and wool are two animal fibres. Will it be wrong to admit that we are able to get
them because of plants only?
Why is it said that life on the earth cannot exist without plants?
G. Exceshe use of fertilisers is harmful to us. Discuss in the class.​

Answer 1

Answer:

1.If all the seeds of a plant fall under the parent plant, there will be shortage of space for the germination of the seeds. Even if they germinate, they cannot grow properly due to scarcity of food resources and also space.

2.No it is not wrong to say that we are able to get them because of plant. Because the animals from which we get silk (silkworm) and the animals from which we get wool (sheep, angora rabbit etc.)

the answer to this question is simple as The plants are the only source of Oxygen for us and We need Oxygen in order to survive. That's why Life on earth cannot exist without plants..