Earth, Moon, and the Sun — Science STD 7 — Question

We learnt in chapter 1 that plants produce their food by a process called photosynthesis. Can we call photosynthesis a chemical change?

Enlist the other names of cyclone.

Insects have a special organ present to carry out respiration. What is that organ called?

What type of clothes should we wear in the summer?

Fill in the blanks in the following statements.
_______ and _______ fibres are obtained from animals.

What is an olfactory indicator?

Predict the following change can be reversed or not be reversed. If you are not sure, you may write that down. Why are you not sure about these?
Twisting of straight string

Name the natural fibre obtained from insects.

Pick the odd-one-out from each of the groups given below on the basis of respiratory organs. Give reason for your answer. Snake, tadpole, crow, goat.

Fill in the blanks:Seed dispersal takes place by means of _____________, _____________ and _____________.