a2zinterviews

1.	Which of the following are absent in gymnosperms?
	A.  Tracheids and fibres
	B.  Xylem fibres
	C.  Xylem vessels
	D.  All of these

Answer

Ans: C Xylem vessels

2.	Biological membranes are composed of
	A. 60% proteins and 40% lipids
	B. 40% proteins and 60% lipids
	C. 50% proteins and 50% lipids
	D. 70% proteins and 30% lipids

Answer

Ans: A 60% proteins and 40% lipids

3.	Which of the following is not an insect?
	A.  Mosquito
	B.  Bed bug
	C.  Spider
	D.  Cockroach

Answer

Ans: C Spider

4.	Bone matrix is rich in
	A.  Phosphorus and potassium
	B.  Calcium and phosphorus
	C.  Calcium and potassium
	D.  Fluoride and calcium

Answer

Ans: B Calcium and phosphorus