______% ethanol is used for sterilization of explants?
A) 10
B) 20
C) 50
D) 70
Nutrients required in __________ concentration are known as macronutrients.
A) >0.5 m mol/l
B) >0.005 m mol/l
C) <0.5 m mol/l
D) <0.005 m mol/l
Nutrients required in __________ concentration are known as micronutrients.
A) >0.5 m mol/l
B) >0.005 m mol/l
C) <0.5 m mol/l
D) <0.005 m mol/l
Polarity of somatic embryo is?
A) Multipolar
B) Monopolar
C) Bipolar
D) All of these
Embryo rescue technique helps to overcome?
A) Post-fertilization barrier
B) Vitrification
C) Browning problem
D) Pre-fertilization barrier
The formation of embryos from callus is known as?
A) Parthenogenetic
B) Indirect embryogenesis
C) Direct embryogenesis
D) None of these
Seed propagation of sterile plant is possible through?
A) Pollen culture
B) Ovary culture
C) Invitro fertilization
D) Synthetic seed
High sucrose level acts as _____ in pollen culture medium?
A) Diffusion
B) Plasmolytic
C) Osmolytic
D) Osmoregulator
Hyper hydration/vitrification problem is associated with?
A) Micropropagation
B) Pollen culture
C) Embryo culture
D) Ovule culture
The development of somatic embryo from other than meristematic cells is described as?
A) Androgenic embryo
B) Parthenogenetic embryo
C) Gametophytic embryo
D) Adventive embryo

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