Strategies for Enhancement in Food Production Test

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Strategies for Enhancement in Food Production Test - 3

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Weekly Quiz Competition

Question 1
4 / -1

Select the correct statement out of the following.

A
A suspension culture consists of single cell and small groups of cells suspended in a liquid medium.

B
During sub-culturing, only a part of the culture is transferred into the new media.

C
Sterilization means complete destruction of microorganisms.

D
All of these.

Solution

In suspension culture, single cell or small group of cells are suspended in a liquid medium. To avoid death of tissue culture/cell/tissues are regularly shifted to new culture flask having fresh nutrient media. Sterilization process of destroying microorganisms to produce contamination free culture.
Question 2
4 / -1

Totipotency refers to

A
capacity to generate genetically identical plants

B
capacity to generate a whole plant from any plant cell/explant

C
capacity to generate hybrid protoplasts

D
recovery of healthy plants from diseased plants

Solution

Totipotency is the capacity to generate a whole plant from any cell or explant. Any part of a plant is taken out and grown in a test tube, under sterile conditions in special nutrient media to regenerate a whole plant by virtue of to tipotency.
Question 3
4 / -1

Which of the following should be used as an explant to generate a disease free plant?

A
Anther

B
Ovary cell

C
Shoot tip

D
Young embryo

Solution

Although the plant is infected with a virus, the meristem (apical and axillary) is free of virus. Hence, one can remove the meristem (shoot tip) and grow it in vitro to obtain virus-free plants.
Question 4
4 / -1

Meristem culture is the culture of

A
axillary or apical shoot meristems

B
anthers

C
plant seeds

D
young embryos

Solution

Meristem is a localized group of cells, which are actively dividing and undifferentiated but ultimately give rise to permanent tissue. Cultivation of axillary of apical shoot meristems is called meristem culture. Meristem culture is carried out in potato, banana, cardamom, orchids (protocorm stage), sugarcane, strawberry, sweet totato, etc.
Question 5
4 / -1

Somaclones are

A
somatic hybrids

B
genetically identical to the original plant

C
used to recover disease free plants

D
sterile plants

Solution

Somaclones are genetically identical plants developed from any part of a plant by tissue culture micropropagation.
Question 6
4 / -1

Given below is the flowchart showing the process of somatic hybridization. Identify A, B, C, D and E.

A
A-cell fusion, B-nuclear fusion, C-cellufase and pectinase, D-protoplast, E-somatic hybrid cell

B
A-cellulase and pectinase, B-protoplast, C-cell fusion, D-nuclear fusion, E-somatic hybrid cell

C
A-protoplast, B-nuclear fusion, C-somatic hybrid cell, D-cellulase and pectinase, E-cell fusion

D
A-cellulase and pectinase, B-protoplast, C-nuclear fusion, D-cell fusion, E-somatic hybrid cell

Solution

In somatic hybridisation, we isolate naked protoplasts by digesting their cell walls using digesting enzymes. Then isolated protoplasts fused together to form a hybrid protoplast which further grew to form a new plant.
Question 7
4 / -1

Microporpagation involves

A
vegetative multiplication of plants by using microoganisms

B
vegetative multiplication of plants by using small explants

C
vegetative multiplication of plants by using microspores

D
non-vegetative multiplication of plants by using microspores and megaspores

Solution

Micropropagation is the tissue culture technique used for rapid vegetative multiplication of ornamental plants and fruit trees by using small sized explants. Because of minute size of the propagules in the culture, the propagation technique is named as micropropagation.
Question 8
4 / -1

A plant cell without cell wall is called

A
proplast

B
protoplast

C
nucleoplasm

D
explant

Solution

The plant cells without cell wall are called protoplasts.
Question 9
4 / -1

A somatic hybrid between potato and tomato is named as

A
bomato

B
mopato

C
pomato

D
topamo

Solution

Pomato is somatic hybrid between potato and tomato that belong to two different genera.
Question 10
4 / -1

Somatic hybrids in plants were first obtained between two species of _____ by Carlson et al. in 1972.

A
tobacco

B
tomato

C
potato

D
grapes

Solution

Somatic hybrids in plants were first obtained between two species of tobacco (Nicotiana glauca and N. langsdorfit) by Carlson et al. in 1972.
Question 11
4 / -1

In plant tissue culture, cytokinins are responsible for the growth of

A
roots

B
shoots

C
adventitious roots

D
none of these

Solution

In plants tissue culture, cytokinins are responsible for the growth of shoots.
Question 12
4 / -1

Hormone responsible for growth of the root in micropropagation is

A
auxin

B
gibberellin

C
cytokinin

D
abscisic acid

Solution

Auxins are responsible for the growth of the root in micropropagation.
Question 13
4 / -1

The enzymes required to obtain protoplast from a plant cell are

A
cellulase

B
chitinase

C
pectinase

D
both (a) and (c)

Solution

Cell wall of the plant cells is removed by digestion with a combination of pectinase and cellullase to obtain protoplast.
Question 14
4 / -1

Match Column-I with Column-II and select the correct answer from the codes given below.

A
A-(iii), B-(i), C-(ii), D-(iv)

B
A(iv), B-(iii), C-(i), D-(ii)

C
A-(ii), B-(i), C-(iii), D-(iv)

D
A-(iv), B-(i), C-(iii), D-(ii)
Question 15
4 / -1

Meristem culture is used

A
to produce disease free plants

B
in germplasm conservation

C
in rapid clonal multiplication

D
all of these

Solution

Meristem culture is a process of culturing meristems (both apical and axillary) which is free from virus, used to obtain virus-free plants by rapid multiplication. It is also used to preserve germplasm characters. Example: banana, sugarcane and potato.

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Strategies for Enhancement in Food Production Test - 3

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Strategies for Enhancement in Food Production Test - 3

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SHARING IS CARING

Question 1

A suspension culture consists of single cell and small groups of cells suspended in a liquid medium.

During sub-culturing, only a part of the culture is transferred into the new media.

Sterilization means complete destruction of microorganisms.

All of these.

Solution

Question 2

capacity to generate genetically identical plants

capacity to generate a whole plant from any plant cell/explant

capacity to generate hybrid protoplasts

recovery of healthy plants from diseased plants

Solution

Question 3

Anther

Ovary cell

Shoot tip

Young embryo

Solution

Question 4

axillary or apical shoot meristems

anthers

plant seeds

young embryos

Solution

Question 5

somatic hybrids

genetically identical to the original plant

used to recover disease free plants

sterile plants

Solution

Question 6

A-cell fusion, B-nuclear fusion, C-cellufase and pectinase, D-protoplast, E-somatic hybrid cell

A-cellulase and pectinase, B-protoplast, C-cell fusion, D-nuclear fusion, E-somatic hybrid cell

A-protoplast, B-nuclear fusion, C-somatic hybrid cell, D-cellulase and pectinase, E-cell fusion

A-cellulase and pectinase, B-protoplast, C-nuclear fusion, D-cell fusion, E-somatic hybrid cell

Solution

Question 7

vegetative multiplication of plants by using microoganisms

vegetative multiplication of plants by using small explants

vegetative multiplication of plants by using microspores

non-vegetative multiplication of plants by using microspores and megaspores

Solution

Question 8

proplast

protoplast

nucleoplasm

explant

Solution

Question 9

bomato

mopato

pomato

topamo

Solution

Question 10

tobacco

tomato

potato

grapes

Solution

Question 11

roots

shoots

adventitious roots

none of these

Solution

Question 12

auxin

gibberellin

cytokinin

abscisic acid

Solution