What do you mean by the term dedifferentiation? - Vidyadip

MCQ

What do you mean by the term dedifferentiation?

A
Cells undergo few to major structural changes both in their cell walls and protoplasm.
B
Environmental signals such as light and gravity also affect certain phases of dedifferentiation.
✓
Cells, that by now have lost the capacity to divide can regain the capacity of division under certain contidition.
D
Plants follow different pathways in response to environment or phases of life to form different kinds of structures. This ability is called dedifferentiation

✓

Answer

Correct option: C.

Cells, that by now have lost the capacity to divide can regain the capacity of division under certain contidition.

(C)
The living differentiated cells, that by now have lost the capacity to divide can regain the capacity of division under certain conditions. This phenomenon is termed as dedifferentiation. Same occurs in tissue culture of leaf.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "SECTION - A [BOTANY - MCQ]" from Model Paper 6→Model Paper 6 — all question types→NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Match column I with column II and choose correct option given below :

Column – I	Column - II
A. Twisted	I. Dianthus
B. Imbricate	II. Euphorbia
C. Free central	III. Cucumber
D. Parietal	IV. Gulmohar
E. Stem tendril	V. Argemone
F. Fleshy cylindrical	VI. Cotton

	A	B	C	D	E	F
(a)	(iv)	(vi)	(iii)	(ii)	(v)	(i)
(b)	(vi)	(iv)	(i)	(v)	(iii)	(ii)
(c)	(i)	(v)	(iii)	(iv)	(vi)	(ii)
(d)	(ii)	(i)	(iv)	(iii)	(vi)	(v)

Compared with the gametophytes of the bryophytes, the gametophytes of vascular plants tend to be

$X$ - $MMC$ is a large cell containing dense cytoplasm and a prominent nucleus

$Y$ - Method of embryo sac formation from a single megaspore is termed monosporic

Match the following

Column $- I$	Column $- II$
$(1)$ Mustard	$(A)$ Opposite phyllotaxy
$(2)$ Guava	$(B)$ Pinnately compound leaf
$(3)$ Neem	$(C)$ Alternate phyllotaxy
	$(D)$ Palmately compound leaf

Choose the wrong statement.

Mosses (along with lichen) are of great ecological importance because

Select the incorrect match for $\frac{ dN }{ dt }= rN \left(\frac{ K - N }{ k }\right)$

Select the true statement.
(i) Epiphyllous when attached to the perianth as in the flowers of brinjal.
(ii) Monoadelphous stamens present in china rose.
(iii) Diadelphous stamens present in pea.
(iv) Polyadelphous stamens present in Citrus
(v) In Salvia and mustard, variation in the length of filaments of stamens within a flower.

Choose correct statements for plant growth regulators :
(i) The discovery of each of the five major groups of PGRs has been accidental.
(ii) Charles Darwin and his son Francis Darwin observed that the coleoptiles of canary grass shows phototropism.
(iii) Auxin was isolated by F.W. Went from tips of coleoptiles of oat seedlings.
(iv) Skoog and Miller identified and crystallised abscisic acid (ABA).
(v) Inhibitor-B, abscission II and dormin were chemically identical and named kinetin.
(vi) Release of ethylene from ripened oranges hastened the ripening of stored unripened bananas.

During photosynthesis