Plant secondary metabolites
A. Help to increase the growth rate of plant
B. Help in plant reproduction processes
C. Provide defense mechanisms against microbial attack
D. Make the plant susceptible to unfavorable conditions
Answer: Option C
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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