Question

QUESTION 5 Which of the following traits are associated with Echinoderms? O A. Water vascular system for movement B. Cells with stinging structures (nematocytes) Dorsoventrally flattened; no digestive tract Lacks true tissues Segmented body wall and internal organs OC. OD. E.

Answer 1

Ans - 5) The correct answer for this question is -

A) water vascular system for movement

Explanation -

Water vascular system or hydraulic system present in echinoderm which help in movement alongwith tube feet.

Water enter through water vascular system and this system transfer water in tubefeet with force. Due to force contraction in muscle of tubefeet occur which cause movement.

Conclusion -Hence water vascular system which is a trait of echinoderm help in movement . And the correct option is -A)

Ans - 41) The correct answer for this question is -

C) Medusa of cnidarian

Explanation -

Cnidaria is the phylum of animal kingdom and predominantally found in marine . It have radial body symmetry . Their body have two type of structure - polyp and medusa .

Medusa of cnidarian contain tantacle which help to catch prey or food .

conclusion - hence the correct answer is option - c ) medusa of cnidarian