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Protoplast: Introduction & Isolation

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Protoplasts are__________

a)

Cell without a nucleus

b)

Cell without a Cell wall

c)

Cell without a Plasma membrane

d)

Cell without a genetic material

2.

__________ is the first step for protoplast culture

a)

Selection of Explant

b)

Viability testing for protoplast

c)

Isolation of protoplast

d)

Preparation of culture media

3.

Cellulase enzyme in isolation of protoplast is used ________

a)

To degrade proteins

b)

To degrade cellulose

c)

To degrade pectin

d)

To degrade hemicellulose

4.

The production of hybrid plants through fusion of two different somatic protoplasts is known as

a)

Protoplast hybrids

b)

Protoplast fusion

c)

Somatic hybridization

d)

Somatic hybrids

5.

1st report on protoplast fusion-derived somatic hybrid plant was reported by

a)

Carlson et al

b)

Hanstein

c)

Klercker

d)

Cocking

6.

The word “PROTOPLAST” was coined by

a)

Hanstein

b)

Klercker

c)

Cocking

d)

Tkebe et al

7.

Isolation of protoplasts mechanically from higher plants was pioneered by

a)

Klercher

b)

Tkebe et al

c)

Cocking

d)

Both A & B

8.

The principle deficiency of mechanical method of isolation is _________

a)

protoplasts released are few in number.

b)

protoplasts are damaged

c)

Viability of protoplasts is high

d)

All of the above

9.

The most commonly used pectinase is

a)

Macerozyme

b)

Rhozyme HP 150

c)

Cellulase

d)

Pectiolose

10.

Friable tissues are having _________

a)

low starch content generally yields better results

b)

high starch content generally yields better results

c)

low sucrose content generally yields better results

d)

low sucrose content generally yields better results