Apical Meristem

Q. Which of following mineral element is needed during the formation of mitotic spindle, accumulates in older leaves and is involved in normal functioning of cell membrane?

1. Fe
2. S
3. Ca
4. P

Q. In a dicot root, vascular cambium originates from-

1. Parenchymatous conjuctive tissue located just below phloem bundles
2. Medullary rays
3. A portion of pericycle tissue, lying opposite to protoxylem
4. Both A and C

Q.

Axillary bud and terminal bud are derived from the activity of

1. Parenchyma

2. Apical Meristem

3. Lateral Meristem

4. Intercalary Meristem

Q.

Cells ‘left behind’ from shoot apical meristem, cannot modify into

1. Tendril

2. Spine

3. All of these

4. Thorn

Q.

Which tissue is responsible for the length of the plant ?

1. Apical meristem

2. lateral meristem

3. Intercalary meristem

4. Epidermis

Q. The apical meristem of the root is present:

1. Only in radicals
2. Only in tap roots
3. Only in adventitious roots
4. In all the roots

Q. Secondary phloem is formed by :

1. Procambium
2. Plerome
3. Vascular cambium
4. Apical meristem

Q.

Cork cells are and are found in dicot stems.

Q.

How many shoot apical meristems are likely to be present in a twig of a plant possessing, 4 branches and 26 leaves?

(a) 26

(b) 1

(c) 5

(d) 30

(e) 4

Q. Removal of apical (terminal) bud of a flowering plant (or pruning of a flowering plant) leads to

1. promotion of lateral branches
2. formation of adventitious roots on the cut side
3. formation of new apical buds
4. early flowering (or stopping of floral growth)

Q. Function of stem is

1. Bear leaves and branches
2. Conduction of water & minerals
3. Conduction and storage of food
4. All of the above

Q. Rearrange the following zones as seen in the root in vertical section and choose the correct option.

A. Root hair zone

B. Zone of meristems

C. Rootcap zone

D. Zone of maturation

E. Zone of elongation

1. D, E, A, C, B
2. C, B, E, A, D
3. A, B, C, D, E
4. E, D, C, B, A

Q.

The apical meristem of the root is present

1. only in adventitious roots

2. only in radicle

3. only in tap roots

4. in all the roots

Q. The portion of apical meristem that gives rise to xylem tissue is called

1. Protoxylem
2. Procambium
3. Metaxylem
4. Tracheids

Q.

How amber is produced in plants?

Q. When a plant undergoes senescence, the nutrients may be

1. None of the above
2. translocated
   
3. withdrawn
   
4. accumulated
   

Q.

Root cap regenerates or dead torn cells of root cap are replaced by the activity of

1. Dermatogen

2. Plerome

3. Periblem

4. Calyptrogen

Q.

Viral infection is usually absent in

1. Phloem cells

2. Xylem cells

3. Pith cells

4. Apical meristem

Q. Leaves are attached to the stem at :

1. Axillary meristem
2. Nodes
3. Apical meristem
4. Internode

Q.

Primary growth in a plant body is mainly due to ____________.

1. Cambium

2. Apical meristem

3. Intercalary meristem

4. Lateral meristem

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

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

Q.

The lawn grass (Cyandon dactylon) needs to be mowed frequently to prevent its overworth. Which tissue is responsible for its rapid growth?

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

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

Q. Which roots amongst the following grow against gravitational force?

1. Prop roots
2. Stilt roots
3. Buttress roots
4. Pneumatophores

Q. Assertion: Apical and intercalary meristems contribute to the growth in length while the lateral meristems bring an increase in the girth of the plant.
Reason: Apical and intercalary meristems always increase the height of the plants.

Choose the correct option.

1. Both assertion and reason are correct and the reason is the correct answer for the assertion
2. Both assertion and reason are correct but the reason is not the correct answer for the assertion
3. The assertion is correct but the reason is incorrect
4. Both assertion and reason are incorrect

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

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

Q. Explain with well labelled diagram different regions of root and also explain structure of root hair?

Q. Assertion :Apical and intercalary meristems contribute to the growth in length while the lateral meristems bring increase in girth in maize. Reason: Apical and intercalary meristems always increase the height of plants.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Where do dermatogen, periblem and plerome occur?

1. Apical meristem
2. Permanent tissues
3. Lateral meristem
4. Secondary meristem

Q.

The leaf bases of onion contain ________ tissues.