Following are the frequently asked questions, the bold texts are answers to the respective questions.
01. Number of tentacles in Hydra is - 6-10
02. The nematocysts of Hydra are important for - Paralysing prey
03. The cavity in the body of Hydra is called - Coelenteron
04. Leech like locomotion in Hydra is - Looping
05. Digestion in Hydra is - Extracellular and intracellular
06. Body wall of Hydra is made of - Ectoderm, mesogloea and endoderm
07. In Hydra, both flagella and pseudopodia are found in - Nutritive-muscular cells
08. The mesoglea of Hydra contains - Nerve cells