Plant Anatomy and Physiology MCQ question and answer with solution

1

Which of the following initiate the biosynthetic pathway that leads to chlorophyll formation?

A) Pyruvic acid and coenzyme A B) Succinyl CoA and glycine C) Pyruvic acid and leucine D) Succinyl CoA and phenylalanine

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Answer & Solution

Answer: Option B

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2

According to Shull and Thornton, the naked embryos of both the upper and the lower seeds of Xanthium have

A) A much lower oxygen requirement than does the intact seed, and as temperature increases, the oxygen requirement decreases B) A very high oxygen requirement than does the intact seed, and the oxygen requirement is independent of the temperature C) An equal amount of oxygen requirement as that required by the intact seed, and the oxygen requirement decreases with the decrease in temperature D) No oxygen requirement but needs high temperature

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Answer & Solution

Answer: Option A

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3

Match List-I (Diseases) with List-II (Modes of spreading of secondary infection) and select the correct answer:

List-I	List-II
a. Potato mosaic	1. By sap inoculation through contact between diseased and healthy plants
b. Bunchly top of banana	2. Secondary infection through the uredospores
c. Leaf rust of coffee	3. Secondary infection through an aphid, Pentolaria nigronervosa
d. Black arm of cotton	4. Caused by rain splashes, wind and dew

A) a-1, b-3, c-2, d-4 B) a-3, b-2, c-1, d-4 C) a-4, b-1, c-2, d-3 D) a-4, b-2, c-3, d-1

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Answer: Option A

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4

The occurrence of which of the following plants indicate intense soil erosion in the area?

A) Urochola raptans and Sporobulous B) Capparis spinosa and Carissa spinarum C) Capparis aphylla and Salix glaucophylla D) Ammophila arenaria and Urochola raptans

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Answer & Solution

Answer: Option B

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5

A seed can germinate in the absence of

A) adequate light B) supply of oxygen C) suitable moisture D) suitable temperature

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Answer & Solution

Answer: Option A

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6

The characters of the pollen grains which have proved of special significance in taxonomic considerations include

A) Number of sperm tubes formed during the process of fertilization B) Structure and nature of intine C) Formation of tube cell and its position in the pollen grain D) Number and position of the germ pores on the pollen grain

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Answer & Solution

Answer: Option D

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7

The postulates of Lundegardh theory of active salt absorption include:

A) Anion absorption is dependent on cation absorption and occurs in the same way B) An oxygen concentration gradient exists from the outer surface to the inner surface of a membrane, thus favouring oxidation at the outer surface and reduction at the inner surface C) The actual transport of the anion occurs through the membrane system D) All of the above

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Answer & Solution

Answer: Option B

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8

Whole plant senescence occurs in

A) Monocarpic species B) Polycarpic species C) Herbaceous species D) Dioecious species

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Answer & Solution

Answer: Option A

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9

Monocarpic herbs include

A) Aestival annual plants B) Hibernal annual plants C) Biennial-perennial herbs D) All of the above

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Answer: Option D

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10

During summer or dry season, tropophytic flora behaves as a

A) Chasmophyte B) Xerophyte C) Mesophyte D) Epiphyte

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Answer & Solution

Answer: Option B

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