49. Intext question I

 

a. All bodily cells in multicellular creatures like humans are not in direct contact with the environment TrueFalse.

 

b. The process of diffusion from the environment will provide enough oxygen to every cell in the body FalseTrue.

 

c. Diffusion is insufficient to supply multicellular creatures' oxygen needs TrueFalse.

 

d. When the size of the animals is large, diffusion alone is sufficient to deliver oxygen to all the parts of the body TrueFalse.

 

e. In multicellular organisms like humans, all the cells are in direct contact with the environment TrueFalse.

 

f. Every cell does not get oxygen as per need by the process of diffusion. Therefore diffusion is insufficient to meet the oxygen requirements of multicellular organisms TrueFalse.