Please answer question 19 and 20
The option D for 20 th question is villi bearing innumerable microvilli

Please answer question 19 and 20 The option D for 20 th question is villi bearing innumerable microvilli o o o 3 o

Please find below the solution to the asked query
 
19. 
The correct option is (a).

The non protein part of enzymes that is important for their functioning is called coenzyme. These are generally B vitamins like Vitamin B₂.

20. The correct option is (a).

In man, the intestinal haustra are the bulges or small pouches of colon caused by sacculation between plicae semilunaris. 

 
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