Apical Meristem

Q.

What is major function of stem?

Q. In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order:

1. Root cap, cell division, cell maturation, cell enlargement
2. Cell division, cell enlargement, cell maturation, root cap
3. Cell division, cell maturation, cell enlargement, root cap
4. Root cap, cell division, cell enlargement, cell maturation

Q.

Viral infection is usually absent in

1. apical meristem

2. phloem cells

3. xylem cells

4. pith cells

Q. Axillary bud in axil of leaves are constituted by the cells left behind from

1. Shoot apical meristem
2. Root apical meristem
3. Permanent mature tissues
4. Lateral meristem

Q.

Heart wood differs from sap wood in

1. presence of rays and fibres

2. absence of vessels and parenchyma

3. having dead and non-conducting elements

4. being susceptible to pests and pathogens

Q.

The terminal end of the root is covered by root cap, which is also called __.

Q. The terminal end of the root is covered by a which makes the meristem sub-terminal.

1. radicle
2. root cap
3. plumule
4. coleoptile

Q. Axillary bud and terminal bud derived from the activity of:

1. Lateral meristem
2. Intercalary meristem
3. Apical meristem
4. Parenchyma

Q. Which one of the plant growth regulators would you use if you are asked to:
(a) Induce rooting in a twig
(b) Quickly ripen a fruit
(c) Delay leaf senescence
(d) Induce growth in axillary buds
(e) Bolt a rosette plant
(f) Induce immediate stomatal closure in leaves.

Q.

What is meant by initiation of lateral meristem and vascular bundle in pericycle?

Q.

Difference between intrafascicular cambium and interfascicular cambium.Also give the difference between cells of cambium and medullary rays.

Q. The cells of the quiescent centre are characterized by:

1. Having dense cytoplasm and promient nuclei
2. Having light cytoplasm and small nuclei
3. Dividing regularly to add to the corpus
4. Dividing regularly to add to tunica

Q.

Vertical growth in a plant body is mainly due to

1. Lateral meristems

2. Cambium

3. Apical meristems

4. Intercalary meristems