| I. Plant cells have centrioles which are almost absent in all animal cells. |
| II. Ribosomes are the site of protein synthesis. |
| III. The middle lamella is the layer mainly of calcium carbonate which holds the different neighbouring cells together. |
| IV. In animal cells steroidal hormones are synthesised by smooth endoplasmic reticulum. |
A)
True False II, IV I, III
B)
True False II, IV I, III
C)
True False II, III I, IV
D)
True False III, IV I, II
Correct Answer: A
Solution :
I. The centrioles occur in mealy all animal cells not in plant cells. III. Middle lamella is a thin amorphous and cementing layer between the two adjacent cells. It is made of pectates of calcium and magnisium.
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