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21.	Which one of the following is the largest phylum in the animal kingdom?
	A.  Annelida
	B.  Arthopoda
	C.  Chordate
	D.  Protozoa

Answer

Ans: B Arthopoda

22.	Which one among the following cell organelles is semi-permeable?
	A.  Cell membrane
	B.  Plasma membrane
	C.  Nucleus
	D.  Cell wall

Answer

Ans: D Cell wall

23.	Which of the following contain enzymes for cellular respiration?
	A.  Mitochondria
	B.  Dictyosomes
	C.  Lysosomes
	D.  Endoplasmic reticular

Answer

Ans: A Mitochondria

24.	Which one of the following is considered as a cell within a cell?
	A.  Chloroplast
	B.  Golgi complex
	C.  Ribosome
	D.  Lysosome

Answer

Ans: A Chloroplast

25.	Which one of the following diseases is caused by bacteria?
	A.  Chicken pox
	B.  Tuberculosis
	C.  Influenza
	D.  Poliomyelitis

Answer

Ans: A Chicken pox