Meristematic Tissue

Q.

Which is an example of Redifferentiation?

1. Formation of secondary cortex

2. Formation of secondary phloem

3. Formation of secondary xylem

4. All of these

Q.

State the location and function of different types of the meristem.

Q. The distinguishing feature of open vascular bundles is presence of

1. Endodermis
2. Pericycle
3. Xylem and phloem
4. Cambium

Q.

How does secondary growth take place in dicot plant.

Q. Large, empty colourless cells of the adaxial epidermis along the veins of grass leaves are:

1. Lenticels
2. Guard cells
3. Bundle sheath cells
4. Bulliform cells

Q. Which of the following is the correct sequence of the developmental process in a plant cell?

1. Plasmatic growth, Differentiation, Senescence and Maturation respectively
2. Plasmatic growth, Differentiation, Maturation and Senescence respectively
3. Maturation, Plasmatic growth, Differentiation and Senescence respectively
4. Differentiation, Plasmatic growth, Maturation and Senescence respectively

Q. What would you call the parenchyma cells that are made to divide under controlled laboratory conditions during plant tissue culture?

Q. Under certain conditions, regaining the lost capacity of division by living cells is called

1. dedifferentiation
2. redifferentiation
3. differentiation
4. efficiency index

Q. What kind of cell division do the meristematic cells undergo while giving rise to new cells?

1. Mitotic division
2. Meiotic division
3. Binary fission
4. Multiple fission

Q.

What is the main role of meristematic tissue in plants?

1. tyloses

2. plasmodesmata

3. lumen

4. pits

Q. The given figure shows two states of a stomata.


In which of the conditions (i) and (ii), guard cells will have higher water content?

1. (i) Only
2. (ii) Only
3. Equal in both
4. No water content in both

Q. Specialised epidermal cells surrounding the guard cells are called

1. complementary cells
2. subsidiary cells
3. bulliform cells
4. lenticels

Q. Match List-I with List-II

List-I	List-II
(a) Lenticels	(i) Phellogen
(b) Cork cambium	(ii) Suberin deposition
(c) Secondary cortex	(iii) Exchange of gases
(d) Cork	(iv) Phelloderm

1. (a) - (iii), (b) - (i), (c) - (iv), (d) - (ii)
2. (a) - (ii), (b) - (iii), (c) - (iv), (d) - (i)
3. (a) - (iv), (b) - (i), (c) - (iii), (d) - (ii)
4. (a) - (iv), (b) - (ii), (c) - (i), (d) - (iii)

Q. Leaves grow due to presence of

1. Apical meristem
2. Diffused meristem
3. Intercalary meristem
4. Mass meristem

Q. What kind of cell division do the meristematic cells undergo while giving rise to new cells?

1. Meiotic division
2. Binary fission
3. Mitotic division
4. Multiple fission

Q. Assertion :Senescence is delayed by the application of cytokinin in plants. Reason: Cytokinin prevents the breakdown of chlorophyll, proteins and nucleic acid.

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

Q. A tissue for conduction of water and food in the leaves of Pinus is:

1. Trabecular tissue
2. Conducting tissue
3. Transfusion tissue
4. All of these

Q. According to their location, meristems are

1. Apical, sub apical and secondary
2. Dermatogen, periblem and plerome
3. Primary and secondary
4. Apical, intercalary and lateral

Q. Plastochron is applicable to

1. Root apical meristem
2. Shoot apical meristem
3. Intercalary meristem
4. Lateral meristem

Q. Which of the following characteristics are correct with respect to meristematic cells?
I. Cells with dense cytoplasm and prominent nucleus
II. Presence of well developed mitochondria and plastids
III.Absence of the property of cell division
IV.Regeneration of parts removed by grazing herbivores
V. Cell derivatives of shoot apical meristem constitute the axillary buds

1. I, II, V
2. I, II, III
3. II, III, IV
4. I, IV, V

Q.

What Is Intercalary Meristem and How Does It Work?

Q. What are guard cells? Explain their role in regulating transpiration.

Q. The term meristem was coined by

1. Hanstein
2. Nageli
3. Schmidt
4. Esau

Q. Select the option that correctly identifies the labellings A, B and C in the given figure showing section of root apical meristem.

1. A-Cortex, B-Protoderm, C-Root cap
2. A-Tunica, B-Protoderm, C-Root cap
3. A-Protoderm, B-Cortex, C-Root cap
4. A-Hypodermis, B-Epidermis, C-Cortex

Q. Meristematic tissue in plants are

1. localised and dividing cells
2. growing in volume
3. localised and permanent
4. not limited to certain region

Q. Which of the following are the types of simple permanent tissues?

1. Parenchyma
2. Collenchyma
3. All of the above
4. Sclerenchyma

Q. Which is not a feature of meristematic tissue?

1. Plastids are present in proplastid stage
2. Cell wall made up of cellulose
3. Absence of reserve food
4. Absence of intercellular spaces and nucleus

Q. Thickness of stem increase due to activity of

1. Cambium
2. Xylem
3. Phloem
4. Shoot apex

Q.

Assertion (A): Meristems develop differently depending on their location.

Reason(R): Meristems located in shoot apex develop into parts of shoot, while meristem in root apex will develop into parts of root.

1. Both A & R are true and R Explains A

2. Both A & R are true and R does not explain A

3. A is true and R is false

4. Both A & R are false

Q. The inherent capacity of a cell to regenerate a new whole organism or plant is called as

1. Ontogeny
2. Totipotency
3. Differentiation
4. Homeostasis