Name the breathing organs in
earthworm

Name the breathing organs in frog

Name the breathing organs in fish

Name the breathing organs in insects

Name the breathing organs in the human body.

Define ureotelism. Name the excretory organs of earthworm.

An organism X having breathing organs A lives on land. When organism X goes under water, it cannot survive for a long time unless carrying an oxygen cylinder. On the other hand, the organism Y having breathing organs B always lives in water and if taken out of water, it dies after a short while. A third organism Z having breathing orgains C and D which lives on the banks of ponds, lakes and rivers can survive on land as well as in water equally well. (a) What could organism X be? Name the breathing organs A. (b) What could organism Y be? Name the breathing orgains B. (c) What could organism Z be ? Name the breathing organs C and D (d) Out of X, Y and Z, which organism is (i) amphibian, (ii) aquatic, and (iii) terrestrial ?

Which of the following organs in earthworms neutralizes humic acid present in humus?

The excretory organs in an earthworm are :

Draw a labelled diagram of the reproductive organs of an earthworm.

Figure P represents the reproductive organs of Chara plant and figure Q represents the reproductive organs of earthworm. Select the optikon which correctly identifies male reproductive organs of the two organisms.