Plant Biotechnology MCQ Questions & Answers

1

Gynogenesis is a process of development of haploid plants

A) From a fertilized cell of female gametophyte B) From an unfertilized cell of female gametophyte C) From isolated pollen grains D) By selective elimination of chromosomes following distant hybridization

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Answer & Solution

Answer: Option B

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2

Parthenogenetic embryos in plants are those which are formed by

A) Unfertilized eggs B) Fertilized eggs C) Sporophytic cells D) Male gametophyte

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Answer & Solution

Answer: Option A

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3

Large scale clonal propagation practically means raising a population of plantlets from

A) A single cell B) A single explant C) Many explants from a single plant D) Many explants from a group of plants

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Answer & Solution

Answer: Option C

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4

Determine the correctness or otherwise of the following Assertion (A) and Reason (R).
Assertion: In direct somatic embryogenesis, embryos are developed without going through callus formation.
Reason: This is possible due to the presence of pre embryonically determined cells.

A) Both (A) and (R) are true but (R) is not the correct reason for (A) B) (A) is false but (R) is true C) (A) is true but (R) is false D) Both (A) and (R) are true and (R) is the correct reason for (A)

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Answer & Solution

Answer: Option D

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5

The following are useful to introduce genes into crop plants except

A) Ti plasmid B) Particle gun C) Breeding D) Auxin

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Answer & Solution

Answer: Option D

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6

Determine the correctness or otherwise of the following Assertion (A) and the Reason (R).
Assertion: The enzymatic degradation of cell wall to obtain single cell called protoplast has helped immensely in developing somatic cell genetics in plants.
Reason: In plants or animals, fusion of two cells must occur through the plasma membrane.

A) Both (A) and (R) are true and (R) is the correct reason for (A) B) Both (A) and (R) are true and (R) is not the correct reason for (A) C) (A) is true but (R) is false D) (A) is false but (R) is true

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Answer & Solution

Answer: Option B

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7

The Bt toxin gene from Bacillus thuringiensis used to generate genetically modified crops is

A) Cry B) Cro C) Cdc D) Cre

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Answer & Solution

Answer: Option A

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8

Embryo rescue is a useful technique to

A) Grow/generate hybrids between different plant species B) Complete the growth of embryos susceptible to defects in seed development C) Break the dormancy of seeds D) All of the above

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Answer & Solution

Answer: Option D

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9

Which one of the following plant secondary metabolites is a natural insecticide?

A) Digitoxin B) Pyrethrin C) Salicylic acid D) Avenacin A-1

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Answer & Solution

Answer: Option B

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10

Some living cells (e.g., plant cell) have the capacity to give rise to whole organism. The term used to describe this property is

A) Morphogenesis B) Androgenesis C) Totipotency D) Organogenesis

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Answer & Solution

Answer: Option C

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Plant Biotechnology MCQ Questions & Answers | Biotechnology