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Science · 2025 · 3 marks
CBSE 2025 · Region 6 · Set 3 · Q30
(a) "In human beings the genes inherited from the parents decide whether the newborn individual is male or female." Explain this statement with the…
(a)
"In human beings the genes inherited from the parents decide whether the newborn individual is male or female." Explain this statement with the help of a flow diagram.
(b)
"Some animals rely on environmental cues for sex determination." Justify this statement giving an example.
Marking-scheme solution
(b)
In few reptiles, the temperature at which fertilised eggs are kept determines whether the animals developing in the eggs will be male or female. / In other animals, such as snails, individuals can change sex
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CBSE Class 10 Science past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.