Question

Draw the diagram of Hydra. Compare it with the figure below recall what you have observed in the first slide ?

Compare slide 1 & 2 to observe which part of it’s body develops a swelling?

a) What have you observed in slide/picture 1, 2 and 3?

b) What is the main difference between slide 1 and 2 as well as 3 and 4?

c) What does swelling (bulge) develop into?

Answer 1

The body wall develops swelling. Observe all the remaining slides. 

a) Picture 1, 2 the body surface of hydra has smooth surface. 

Picture 3, a swelling is formed on it’s body surface.

b) Slide 1 and 2 Hydra body is smooth. Slide. 3, a swelling is formed. Swelling increases in size, tentacles are formed which is called bud. 

Slide 4, the bud is cut off and separated from parent Hydra and can live individually.

c) The swelling develops into a bud.