Redifferentiation

Q. Which of the following is a product of redifferentiation?

1. Meristematic cells
2. Both b and c
3. Root cap cells
4. Cork

Q. Cork, secondary cortex and secondary xylem are formed through:

1. Dedifferentiation
2. Redifferentiation
3. Differentiation
4. Obliteration

Q.

How many of the following statements are correct with respect to embryogeny?

I. In monocots, the basal cell is smaller and lies towards the chalazal end.

II. In dicots, the terminal cell contributes to the formation of a suspensor.

III. In monocots, the basal cell doesn’t divide and transforms directly into a large vesicular cell.

IV. In dicots, the hypophysis gives rise to the embryonic root and root cap in the embryo.

1. 1
2. 2
3. 3
4. 4

Q. Redifferentiation is the process in which

1. cells undergo senescence
2. none of the above
3. cells lose the capacity to divide and get mature
4. cells divide to perform specific functions

Q.

Does phellum, phellogen and phelloderm together called as periderm?

Q.

Meristems of plants differ from animal stem cells in

A. Development based on their location

B. Growth and division as it is not completely pre-programmed

C. Being influenced by the environment

D. Adding new cells continuously to the plant body

1. A and B

2. A only

3. A, B and D

4. B and D

Q. Which of the following is a product of redifferentiation?

1. Meristematic cells
2. Root cap cells
3. Cork
4. Both b and c

Q. List some of the tissues in woody dicoytyledenous plant that are the products of redifferentiation.

Q. Examples of tissues that are formed by redifferentiation are

1. Secondary phloem
2. Secondary xylem
3. Cork cell
4. All of these

Q. Which of the following are the products of redifferentiation?

1. Guard cells
2. Bulliform cells
3. Complimentary cells
4. Subsidiary cells

Q.

In the life cycle of a typical dicot plant, arrange the following events in a correct sequence

A - Redifferentiation

B - Differentiation

C - Dedifferentiation

D - Divisions in primary meristem

1. DBCA

2. BADC

3. DCBA

4. ABCD

Q. Cork, secondary cortex and secondary xylem are formed through:

1. Dedifferentiation
2. Redifferentiation
3. Differentiation
4. Obliteration

Q. Cork, secondary cortex and secondary xylem are formed through:

1. Dedifferentiation
2. Redifferentiation
3. Differentiation
4. Obliteration

Q. The ability of the callus cells to differentiate into a plant organ is

1. Differentiation
2. Dedifferentiation
3. Redifferentiation
4. None of the above

Q. In the life cycle of a typical dicot plant, arrange the following events in a correct sequence

1. Cell division
2. Dedifferentiate
3. Redifferentiate
4. Differentiate

Q. The commercial cork used as bottle cork is a product of

1. Xylem
2. Periderm
3. Dermatogen
4. Phellogen

Q. The interfibrillar material of the secondary wall is chiefly made up of

1. Fat
2. Wax
3. Lignin
4. Glucose

Q. Cambium cells divide in which plane

1. Tangential
2. Oblique
3. Radial
4. Anticlinal

Q. The ability of the components of cells of callus to form a whole plant is known as

1. Redifferentiation
2. Dedifferentiation
3. Both A and B
4. None of the above

Q. Interphase is short in

1. Cleavage
2. None of the above
3. Typical Mitosis
4. Both A and B

Q. Which of the following is not caused by mycoplasmas?

1. Little leaf of brinjal
2. Bunchy top of papaya
3. Citrus canker
4. Witches-broom of potato

Q.

In the life cycle of a typical dicot plant, arrange the following events in a correct sequence

A - Redifferentiation

B - Differentiation

C - Dedifferentiation

D - Divisions in primary meristem

1. DBCA

2. BADC

3. DCBA

4. ABCD

Q. Which of the following is a product of redifferentiation?

1. Cork
2. Both b and c
3. Meristematic cells
4. Root cap cells

Q. The developing embryo shows

1. Auxetic growth
2. Accretionary growth
3. Multiplicative growth
4. No growth

Q. Periderm is formed by:

1. Phellem
2. Phelloderm
3. Phellogen
4. All of these