(Download) CBSE Class-12 Sample Paper 2024-25 : Biology

Sample Question Paper (Term-1) 2024-25

Subject Name : Biology

Time Allowed: 90

Minutes Maximum Marks: 40

SECTION - A

1 Signals for parturition in human female originate from
A. Fully developed foetus only
B. Both placenta as well as fully developed foetus
C. Placenta only
D. Oxytocin released from maternal pituitary

2 To produce 1600 seeds, the number of meiotic divisions required will be
A. 2400
B. 2000
C. 1600
D. 1800

3 A sample of normal double-stranded DNA was found to have thymine content of 27%. What will be the expected proportion of guanine in this strand?
A. 23%
B. 32%
C. 36%
D. 73%

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