Genetics And Plant Breeding MCQ Question and Answer | Agriculture MCQ Question Page-4 section-9

Section 1 Section 2 Section 3 Section 4 Section 5 Section 6 Section 7 Section 8 Section 9 Section 10

31.
The 'pure line' theory was proposed by

A. Bateson

B. Johannsen

C. Watson

D. Mendel

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32.
The C₄ -plants are more efficient than C₃ -plants because

A. They have two types of chloroplasts

B. They have photorespiration

C. CO₂ acceptor is PEP

D. They lack photorespiration

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33.
When chiasma frequency is 100%, the percentage of crossing over is

A. 50%

B. 100%

C. 150%

D. 75%

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34.
A genophore is made up of

A. a ssDNA

B. ss or dsDNA

C. RNA & Histones

D. dsRNA

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35.
Ovule is attached to the placenta with a slender stalk, known as

A. Funicle

B. Raphe

C. Hilum

D. Chalaza

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36.
If a female plant of genetic constitution AABB is crossed to a male plant of genetic constitution aabb and the F₁ is test crossed, the genetic constitution of the test crossed progenies will be

A. 1AABB : 1AAbb : 1aaBB : 1aabb

B. 1AABB : 1AaBb : 1AaBB : 1aaBb

C. 1AABB : 1AABb : 1AaBB : 1aabb

D. 1AaBb : 1Aabb : 1aaBb : 1aabb

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37.
Which hormone suppresses the growth of plant?

A. Auxin

B. Abscisic acid

C. Cytokinin

D. Gibberellin

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38.
The sources of male sterility include

A. Spontaneous mutations

B. Induced mutations

C. Interspecific crosses

D. None of these

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39.
What happens in PS-II?

A. Photolysis of water

B. CO₂ fixation

C. CO₂ reduction

D. None of these

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40.
Double top cross refers to

A. (A × B) × OPV

B. (A × B) × (C × D)

C. (A × B) × C

D. All of these

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Genetics And Plant Breeding MCQ Question and Answer | Agriculture MCQ Question

31. The 'pure line' theory was proposed by

Answer & Solution

32. The C4 -plants are more efficient than C3 -plants because

Answer & Solution

33. When chiasma frequency is 100%, the percentage of crossing over is

Answer & Solution

34. A genophore is made up of

Answer & Solution

35. Ovule is attached to the placenta with a slender stalk, known as

Answer & Solution

36. If a female plant of genetic constitution AABB is crossed to a male plant of genetic constitution aabb and the F1 is test crossed, the genetic constitution of the test crossed progenies will be

Answer & Solution

37. Which hormone suppresses the growth of plant?

Answer & Solution

38. The sources of male sterility include

Answer & Solution

39. What happens in PS-II?

Answer & Solution

40. Double top cross refers to

Answer & Solution

Read More Section(Genetics and Plant Breeding)

31.
The 'pure line' theory was proposed by

32.
The C₄ -plants are more efficient than C₃ -plants because

33.
When chiasma frequency is 100%, the percentage of crossing over is

34.
A genophore is made up of

35.
Ovule is attached to the placenta with a slender stalk, known as

36.
If a female plant of genetic constitution AABB is crossed to a male plant of genetic constitution aabb and the F₁ is test crossed, the genetic constitution of the test crossed progenies will be

37.
Which hormone suppresses the growth of plant?

38.
The sources of male sterility include

39.
What happens in PS-II?

40.
Double top cross refers to