CBSE 2023 · Region 1 · Set 1 · Q9 · 1 mark
Given below are two columns. In Column I the names of four contraceptive devices are given and in Column II the modes of action of the contraceptives are given. Select the option where the contraceptive devices are correctly matched with their respective modes of action. Column I (Contraceptive devices) Column II (Modes of action) P. Lippes loop i. Inhibition of ovulation Q. Multiload $\displaystyle 375$ ii. Phagocytosis of sperms in uterus R. Subcutaneous Norplant iii. Causes thickening of cervical mucous S. Saheli iv. Makes cervix hostile to sperms
| Column I (Contraceptive devices) | Column II (Modes of action) | |
| P. | Lippes loop | i. Inhibition of ovulation |
| Q. | Multiload $\displaystyle 375$ | ii. Phagocytosis of sperms in uterus |
| R. | Subcutaneous Norplant | iii. Causes thickening of cervical mucous |
| S. | Saheli | iv. Makes cervix hostile to sperms |
Official answer
From CBSE’s own marking scheme for this paper.
(A)
P-ii, Q-iv, R-iii, S-i
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CBSE Class 12 Biology past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.