1
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

The Phenomenon by which the undividing parenchyma cells start to divide mitotically during plant tissue culture is called as

A
Secondary growth
B
Differentiation
C
Dedifferentiation
D
Redifferentiation
2
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

To ensure that only the desired pollens fall on the stigma in artificial hybridization process

(a) the female flower buds of plant producing unisexual flowers need not be bagged.

(b) there is no need to emasculate unisexual flowers of selected female parent

(c) emasculated flowers are to be bagged immediately after cross pollination

(d) emasculated flowers are to be bagged after removal of anthers

(e) bisexual flowers, showing protogyny are never selected for cross

Choose the correct answer from the options given belows

A
(a), (d) and (e) only
B
(a), (b) and (c) only
C
(b), (c) and (d) only
D
(b), (c) and (e) only
3
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

Which of the following can be expected if scientists succeed in introducing apomictic gene into hybrid varieties of crops?

A
There will be segregation of the desired characters only in the progeny
B
Polyembryony will be seen and each seed will produce many plantlets
C
Seeds of hybrid plants will show longer dormancy
D
Farmers can keep on using the seeds produced by the hybrids to raise new crop year after year
4
NEET 2022 Phase 2
MCQ (Single Correct Answer)
+4
-1

Select the incorrect statement with respect to inbreeding of animals.

A
It exposes harmful recessive genes that are eliminated by selection.
B
It is used for evolving pure lines in cattle.
C
It helps in accumulation of superior genes and elimination of less desirable genes.
D
It decreases homozygosity.
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