The pungency of mustard seeds is primarily due to secondary metabolites such as isothiocyanate and nitrile. The pungency is usually felt only when the seeds are crushed. This is because of
A. The coat of the intact seeds blocks the pungent volatiles from being released
B. The pungent chemicals are stored as inactive conjugates and compartmentalized from the enzymes that convert them into active chemicals
C. The pungent chemicals are formed only after the reaction with atmospheric oxygen
D. The pungent chemicals are formed only after the reaction with atmospheric carbon dioxide
Answer: Option B
This Question Belongs to Biotechnology Engineering >> Plant Biotechnology
Gynogenesis is a process of development of haploid plants
A. From a fertilized cell of female gametophyte
B. From an unfertilized cell of female gametophyte
C. From isolated pollen grains
D. By selective elimination of chromosomes following distant hybridization
Parthenogenetic embryos in plants are those which are formed by
A. Unfertilized eggs
B. Fertilized eggs
C. Sporophytic cells
D. Male gametophyte
Large scale clonal propagation practically means raising a population of plantlets from
A. A single cell
B. A single explant
C. Many explants from a single plant
D. Many explants from a group of plants
A. Both (A) and (R) are true but (R) is not the correct reason for (A)
B. (A) is false but (R) is true
C. (A) is true but (R) is false
D. Both (A) and (R) are true and (R) is the correct reason for (A)
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