Induction phase of embryogenesis is promoted by?
A) Auxin
B) ABA
C) Cytokinin
D) GA3
For embryogenesis, which of the following developmental events are in correct sequence?
A) Heart shaped → Globular shape → Torpedo shaped → Cotyledonary stage
B) Globular shape → Heart shaped → Torpedo shaped → Cotyledonary stage
C) Globular shape → Torpedo shaped → Heart shaped → Cotyledonary stage
D) Heart shaped → Torpedo shaped → Globular shape → Cotyledonary stage
Gynogenesis term is related to?
A) Fertilized ovule
B) Unfertilized ovule
C) Mature ovule
D) Both A and B
In which phase is the rate of cell division the highest?
A) Lag phase
B) Linear phase
C) Exponential phase
D) Stationary phase
In which phase is the rate of cell expansion increased?
A) Declaration phase
B) Linear phase
C) Exponential phase
D) Stationary phase
In which phase are both the rate of cell division and expansion declining?
A) Declaration phase
B) Linear phase
C) Exponential phase
D) Stationary phase
In pollen culture medium, high sucrose level may act as?
A) Osmoregulatory
B) Plasmolytic
C) Osmolytic
D) Diffusion
The technique used to recover hybrids from sexually incompatible species is?
A) In vitro fertilization
B) In vitro pollination
C) Embryo culture
D) Unfertilized ovule
The ploidy level of primary endosperm cell is?
A) 2n
B) n
C) 3n
D) 4n
Pre-fertilization barrier in wide hybridization can be overcome by?
A) Embryo culture
B) Embryo rescue
C) In vitro pollination
D) Anther culture

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