CBSE Class-9 The Fundamental Unit Of Life: Cell / Biology MCQ Questions

MCQ questions on Biology Class-9 (Answers Are Given Below)

1. Cell wall of plant cells is chiefly composed of
   (a) hemicellulose
   (b) cellulose
   (c) phospholipids (d) proteins
2. Intercellular connections in plant cells are
   called
   (a) middle lamella (b) microfibrils
   (c) matrix
   (d) plasmodesmata
3. The infoldings in mitochondria are known as
   (a) cristae
   (b) matrix
   (c) cisternae
   (d) grana
4. Aleuroplasts in a cell store
   (a) starch
   (6) oil
   (c) protein
   (d) nutrients
5. Well defined nucleus is absent in
   (a) plant cell
   (b) animal cell
   (c) eukaryotic cell (d) prokaryotic cell
6. Mitochondria are the seat of
   (a) anaerobic respiration
   (b) trapping of sunlight
   (c) Krebs cycle
   (d) Calvin cycle
7. First living cells were observed by
   (a) A.V. Leeuwenhoek (b) Robert Hooke
   (C) R. Virchow
   (d) Robert Brown
8. Membrane which allows passage of only
   solvent through it is
   (a) differentially permeable
   (b) semipermeable (c) impermeable
   (d) both (a) and (b)
9. Unicellular organisms take in oxygen and pass
   out carbon dioxide through
   (a) diffusion
   (c) endosmosis
   (b) exosmosis
   (d) active transport
10. Root hairs of plants absorb water from soil through
    (a) diffusion
    (c) osmosis
    (b) imbibition
    (d) all the above

Answers:

1. (b);
2. (d);
3. (a)
4. (C);
5. (d);
6. (c);
7. (a:
8. (b);
9. (a);
10. (C).