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