A) micro propagation
B) hardening
C) caulogenesis
D) embryogenesis
Correct Answer: B
Solution :
: Hardening refers to the preparation of the plants for a natural growth environment. Until this stage the plantlets have been grown in ideal conditions to encourage rapid growth. Due to the controlled nature of their maturation, the plantlets often do not have fully functional dermal covering. This causes them to be highly susceptible to disease and inefficient in the use of water and energy. When taken out of culture, the plantlets need time to adjust to more natural environmental conditions. Hardening, typically involves weaning the plantlets from a high humidity, low light, warm environment to a normal growth environment for the species considered.
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