Plant Anatomy and Physiology MCQ question and answer with solution

81

Consider the following statements.
1. Sweet orange plant is propagated by grafting technique.
2. Jasmine plant is propagated by layering technique.
Which of the statement (s) given above is/are correct?

A) Only 1 B) Only 2 C) Both 1 and 2 D) Neither 1 nor 2

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Answer & Solution

Answer: Option C

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82

The mechanism by which the genetic constitution of a plant influences parthenocarpic development is due to the change in the

A) Temperature of the surrounding atmosphere B) Balance of auxins in the fruit tissues C) Quantity of water provided to the plant regularly D) Duration of fertilization from flower to flower

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Answer & Solution

Answer: Option B

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83

The indirect ecological factors include

A) Temperature B) Humidity of air C) Soil nutrients D) Soil organisms

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Answer & Solution

Answer: Option D

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84

Which one of the following will happen if the medium surrounding the cell has a higher concentration than the cell?

A) The cell will gain water B) The cell will die C) There will be no change D) The cell will lose water

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Answer & Solution

Answer: Option D

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85

Consider the following statements regarding hormones.
1. It is an organic compound which control the growth of plant.
2. It is special kind of organic compound found in small amount which control metabolic activity and growth of plant.
3. Its different concentration produce different organs.
Which of the statements given above is/are true about hormones ?

A) 1 and 2 B) 1, 2 and 3 C) Only 2 D) Only 1

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Answer & Solution

Answer: Option B

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86

The oxygen evolved during photosynthesis comes from splitting of

A) water B) carbon dioxide C) oxygen D) light

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Answer & Solution

Answer: Option A

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87

According to Wareing, bud dormancy in woody species is a photoperiodic phenomenon that is

A) Caused by long day lengths and relieved by short day lengths B) Caused by short day lengths and relieved by long day lengths C) Both caused and relieved by long day lengths D) Both caused and relieved by short day lengths

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Answer & Solution

Answer: Option B

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88

Which of the following blocks the "Hill reaction" in photosynthesis thus killing the plant by closing down food production?

A) Carbon dioxide (CO₂) B) Ozone (O₃) C) Chloroflurocarbon (CFC) D) Peroxyacetyl nitrate (PAN)

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Answer & Solution

Answer: Option D

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89

The resultant amount of energy stored in the tissue of heterotrophs is termed as

A) Gross secondary production B) Net secondary production C) Net primary production D) None of the above

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Answer & Solution

Answer: Option B

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90

Sevetal major factors that indicate that cytokinins interact directly with nucleic acids include

A) Cytokinin composition B) Existence of cells of active cytokinin ribonucleosides and nucleotides C) Cytokinin-stimulated RNA and protein synthesis D) All of the above

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Answer & Solution

Answer: Option D

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