In coelomates, the problem of diffusion of food from gut to tissues is solved by:
The presence of coelomic fluid.
Churning the food within the body cavity.
Developing a circulatory system.
Developing gut associated glands.
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Coelomates show the development of a circulatory system for the purpose of absorption of nutrients and its circulation throughout the body.
An important component of the circulatory system is a pigment containing fluid component called blood.
Blood is the liquid connective tissue that circulates in the entire body and serves various functions like carrying oxygen and carbon dioxide, hormones, nutrients, excretory substances etc.
Hence, the correct answer is option C.
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Body cavity is the cavity present between body wall and gut wall. In some animals the body cavity is not lined by mesoderm. Such animals are called.
is a fluid-filled cavity between body wall and gut wall.
Question 47 Give examples for the following (a) Bilateral, dorsiventral symmetry is found in___. (b) Worms causing disease elephantiasis is ___. (c) Open circulatory system is found in ___ where coelomic cavity is filled with blood. (d) ___are known to have pseudocoelom.
The cockroach has a/an circulatory system and blood flows through generalised body coelom called .
Which one of the following feature is not a characteristic of protochordata?
(a) Presence of notochord
(b) Bilateral symmetry and coelom
(c) Jointed legs
(d) Presence of circulatory system