Question

43. Which of the following statements is not correct?
(a) Deoxygenated blood is poured into right atrium of heart.
(b) The excretory units of flatworms are flame cells.
(c) Human kidney has about 1 million nephridia
(d) Tracheids and vessels are non-living conducting tissues.​

Answer 1

Answer:

option (b)

• The excretory units of flatworms are Protonephridia .

☆ these are made up of many flame cells .

therefore , option b is incorrect.

the correct answer will be :-

• the excretory units of flatworms are protonephridia which are made up of many flame cells .

Answer 2

Explanation:

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