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Biology · 2025 · 3 marks
Biotechnology : Principles and ProcessesProcesses of Recombinant DNA Technology3 marksUnderstandshort answer
CBSE 2025 · Region 7 · Set 1 · Q27
(a) Mention any two advantages of micropropagation techniques. (b) Write in brief how the process is carried out in the laboratory. (c) Name any two…
(a)
Mention any two advantages of micropropagation techniques.
(b)
Write in brief how the process is carried out in the laboratory.
(c)
Name any two important food plants grown commercially by this method.
Marking-scheme solution
(a)
Large number of plants can be grown in short period of time, useful
where sexual reproduction is not possible, plants without seeds can be multiplied, every plant has same genetic makeup.
(b)
Any part of the plant or explant is grown in a test tube under sterile
conditions, in nutrients medium ( containing sucrose, vitamins, inorganic salts,amino acids, growth regulators like auxin and cytokinin etc)
(c)
Banana, Apple, Tomato, etc.
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CBSE Class 12 Biology past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.