Plant Anatomy and Physiology MCQ question and answer with solution

81

Many of the germination inhibitors may be leached out of one plant and may inhibit the growth or seed germination of a plant from another species. Plants that exhibit this kind of competitive behaviour are said to be

A) Homeopathic B) Allelopathic C) Biopathic D) Allopathic

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Answer & Solution

Answer: Option B

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82

Before maturation, each crop plant requires a certain number of "etfective heat units" - this is called

A) Heat unit constant B) Photo constant C) Quantum constant D) Thermal constant

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Answer & Solution

Answer: Option D

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83

Coenzyme Q (CoQ) functions as a mobile electron carrier between

A) Flavoproteins and quinones B) Plastocyanin and flavoproteins C) Flavoproteins and cytochromes D) Sulphur proteins and cytochrome b₆

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Answer & Solution

Answer: Option C

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84

Which of the following are examples of kharif crops?

A) Barley, gram, rice and mustard B) Maize, sesamum, cotton and tobacco C) Maize, gram, cotton and mustard D) Barley, sesamum, cotton and mustard

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Answer & Solution

Answer: Option B

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85

At the time of germination the exosporium ruptures and the endosporium grows out in the form of a short tubular hyphae, called the

A) Infection thread B) Epibasidium C) Hypobasidium D) Trichogyne

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Answer & Solution

Answer: Option B

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86

The formation of 3-PGA from glycolic acid, glyoxylic acid, glycine and serine is referred to as

A) HMP pathway B) Hatch and slack pathway C) EMP pathway D) Glycolate pathway

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Answer & Solution

Answer: Option D

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87

Maximum germination is achieved if

A) The seeds are kept at a cool temperature before being irradiated with red light and at a relatively high temperature for a period of time after being irradiated B) The seeds are kept at a high temperature both before and after being irradiated with red light C) The seeds are kept at a high temperature before being radiated with red light, whether or not the temperature is lowered after being irradiated D) None of the above

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Answer & Solution

Answer: Option A

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88

In which part of the female flower does fertilisation take place?

A) Ovary B) Stigma C) Filament D) Style

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Answer & Solution

Answer: Option A

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89

In which of the following plants, the pollen grains do not separate apart but remain adhered in tetrad to form "Compound pollen grains"?

A) Drosera B) Calotropis C) Halophila D) Both B and C

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Answer & Solution

Answer: Option A

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90

Why are dark reactions called so?

A) They occur in darkness B) They are not light dependent C) They are not directly light driven D) Both A and B

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Answer & Solution

Answer: Option C

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Plant Anatomy and Physiology MCQ question and answer with solution | Biology Gk MCQs