Home
Class 12
BIOLOGY
Given below are a few statements regardi...

Given below are a few statements regarding somatic hybridisation. Choose the correct statements.
(i) Protoplasts of different cells of the same plant are fused.
(ii) Protoplasts from cells of different species can fused.
(iii) Treatment of cell with cellulase and pectinase mandatory.
(iv) The hybrid protoplast contains characters of only one parential protoplast.

A

(i) and (iii)

B

(i) and (ii)

C

(i) and (iv)

D

(ii) and (iii)

Text Solution

Verified by Experts

The correct Answer is:
D

A hybrid produced by fusion of somatic cells of two varieties or species is known as somatic hybrid. The process of producing somatic hybrids is called somatic hybridisation. First, the cell wall of the plant cells are removed by digestions with a combination of pectinase and cellulase. The plant cells without cell wall are called protoplasts. The fusion of protoplasts not only involves the fusion of their cytoplasm but also their nuclie. The fused protoplasts are allowed to grow on culture medium. Soon they develop their own walls and are called somatic hybrid cells. The hybrid cells give rise to callus. Callus later differentiates into new plant with character of two plants in one.
Promotional Banner

Similar Questions

Explore conceptually related problems

Identify the correct statements from the below about "Role of the Nucleus". (I) Nucleus is the organising centre of the cell (II) Control activies of the cell (III) Genetic information copied from cell to cell (IV) Herediatary characters passed on to new individuals

Identify the correct statement(s) from the below i) Monohybrid inheritance is the inheritance of a single character. ii) It involves the inheritance of two alleles of a single gene. iii) It involves individuals differing in two characters. iv) It is the inheritance of two separate genes.

Identify the correct statement (i) sulphur is essential for amino acids cystine and methionine (ii) low level of N , K ,S and Mo affect the cell division (iii) Non -leguminous plant Alnus which contain bacterium frankia (iv) Denitrification carrird out by nitrosomonas and nitrobacter .

Study the following statements regarding recombinant DNA technology and select the incorrect ones. (i) Taq polymerase extends the primers using the nucleotides provided in the reaction. (ii) Antibiotic resistance genes are considered as desirable genes in recombinant DNA technology. (iii) DNA fragments are separated according to their charge only, in agarose gel electrophoresis. (iv) Transformation is a procedure through which a piece of DNA is integrated in to the genome of a host bacterium. (v) To produce higher yields of a desired protein, host cells can be multiplied in a continuous culture. (vi) Downstream processing is one of the steps of polymerase chain reaction.

(I) Secondary metabolites are "by products" of cell metabolism. (II) Production of secondary metabolites can be automated using bio-reactors. (III) Fusion product of protoplast with nucleus of different cells are cybrid. (IV) Polyethylene glycol is used as growth agent in tissue culture.

Identify the correct statements from the below about "Mitosis". (I) One division (II) Number of chromosomes remains the same (III) Chiasmata do not form (IV) Two daugther cells are formed

Identify the correct statement(s). (i) Totipotency is the ability of single cell to produce a whole organism. (ii) Pluripotency refers to ability of stem cell with apotential to differentiate into any kind of germ layers. (iii) Unipotency refers to ability of stem cell to differentiate into one cell type. (iv) Oligopotency refers to stem cells to differentiate into few cell types.