ANIMAL CELL CULTURE AND REGULATION QUIZ

Which method of plant propagation involves the use of girdling?

Cuttings

Layering

Grafting

Micropropagation

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Which of the following is considered as the disadvantage of conventional plant tissue culture for clonal propagation?

Storage and transportation of propogates

Less multiplication of disease free plants

Multiplication of sexually derived sterile hybrids

Both (b) and (c)

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Cellular totipotency is the property of

all of these

plants

bacteria

animals

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A(n) __________ is an excised piece of leaf or stem tissue used in micropropagation.

microshoot

medium

explant

scion

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The phenomenon of the reversion of mature cells to the meristematic state leading to the formation of callus is known as

either (a) or (b)

redifferentiation

dedifferentiation

none of these

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The ability of the component cells of callus to form a whole plant is known as

none of these

dedifferentiation

either (a) or (b)

redifferentiation

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Protoplasts are the cells devoid of

cell wall

both cell wall and cell membrane

none of these

cell membrane

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What is/are the benefit(s) of micropropagation or clonal propagation?

Rapid multiplication of superior clones

All of these

Multiplication of sexually derived sterile hybrids

Multiplication of disease free plants

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Subculturing is similar to propagation by cuttings because

All of these

it uses scions to produce new microshoots

they both use in vitro growing conditions

it separates multiple microshoots and places them in a medium

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In a callus culture

only auxin is required for root and shoot formation

increasing level of auxin to a callus induces shoot formation and increasing level of cytokinin promote root formation

auxins and cytokinins are not required

increasing level of cytokinin to a callus induces shoot formation and increasing level of auxin promote root formation

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