1. Cell wall of plant cells is chiefly composed of 

(a) hemicellulose   (b) cellulose 
(c) phospholipicls (d) proteins 

2. Intercellular connections in plant cells are called 
(a) middle; lamella 
(b) microfibrils 
(c) plasmodesmata 
(d) matrix 
3. The infoldings in mitochondria are known as 
(a) matrix 
(b) cristae 
(c) grana 
(d) cisternae 
4. Aleuroplasts in a cell store 
(a) Oil 
(b) starch 
(c) nutrieny 
(d) protein 
5. Well' defined nucleus is absent in 
(a) plant cell 
(b) animal cell 
(c) prokaryotic cell 
(d) eukarybtic cell 
6. Mitochondria are the-seat of 
(a) anaerobic respiration 
(b) trapping of sunlight