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Practice each question, then open the answer or worked solution.
The scientific process by which crop plants are enriched with certain
desirable nutrients are called:
a. crop protection
b. breeding
c. bio-fortification
d. bio-remediation.Solution:
Option (c) is the answer.
12. The term ‘totipotency’ refers to the capacity of a:
a. cell to generate whole plant
b. bud to generate whole plant
c. seed to germinate
d. cell to enlarge in size
Option (a) is the answer.
Given below are a few statements regarding somatic hybridization.
Choose the correct statements.
protoplast.
a. (i) and (iii) b. (i) and (ii) c. (i) and (iv) d. (ii) and (iii)
Option (d) is the answer.
An explant is:
a. dead plant
b. part of the plant
c. part of the plant used in tissue culture
d. part of the plant that expresses a specific gene.
Option (c) is the answer.
The biggest constraint of plant breeding is:
a. availability of desirable genes in the crop and its wild relatives
b. infrastructure
c. trained manpower
d. transfer of genes from unrelated sources.
Option (a) is the answer.
Lysine and tryptophan are:
a. proteins
b. non-essential amino acids
c. essential amino acids
d. aromatic amino acids.
Option (c) is the answer.
Micro-propagation is:
a. propagation of microbes in vitro
b. propagation of plants in vitro
c. propagation of cells in vitro
d. growing plants on a smaller scale.
Option (b) is the answer.
Protoplast is:
a. another name for protoplasm
b. an animal cell
c. a plant cell without a cell wall
d. a plant cell.
Option (c) is the answer.
To isolate protoplast, one needs:
a. pectinase
b. cellulase
c. both pectinase and cellulase
d. chitinase.
Option (c) is the answer.
Which one of the following is a marine fish:
a. Rohu
b. Hilsa
c. Catla
d. Common Carp.
Option (b) is the answer
Which one of the following products of apiculture is used in cosmetics
and polishes:
a. honey
b. propolis
c. wax
d. Royal jelly
Option (c) is the answer.