Give two examples which show how that plants depends on animals.

Give two examples of short day plants.

Give two examples of long day plants.

(a) What is meant by a species ? Give two examples of plant species and two of animals. (b) State the various factors which could lead to the formation of new species.

Give two examples of insectivorous plant.

Give a example to show that friction depends on the nature of two surface in contact.

Give one example each of ectothermal and endothermal animals.

Give two examples of parasitic animals

Give two example from everyday life which show that air exerts pressure.

Give two examples to show the anomalous behavious of fluorine.