Which of the following living organisms do not possess a circulatory system?

I and II

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II and IV

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Solution

The correct options are
B
II

D
II and IV

Hydra and sponges do not possess any circulatory system as they have cellular level of organisation. The cellular level of organization means that the cells do not form organized tissues. Circulatory system is a characteristics of higher level of organisms which show organ-system type of body organization.

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Similar questions

Digital signals

(i) Do not provide a continuous set of values,

(ii) Represent values as discrete steps,

(iii) Can utilize binary system, and

(iv) Can utilize decimal as well as binary systems.

Which of the above statements are true?

(a) (i) and (ii) only

(b) (ii) and (iii) only

(d) All of (i), (ii), (iii) and (iv).

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