MCQ
Streptomycin was first isolated in 1944 - 45 by ........... :
- ALeeuwenhoek
- BBurKholder
- CAlexander Fleming
- DWaksman
Explanation:
In 1952, Selman Abraham Waksman was awarded the Nobel prize in physiology or medicine in recognition for his discovery of streptomycin, the first antibiotic active against tuberculosis.
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| Column-I | Column-II |
| $(A)$ Government of India legalized $MTP$ in | $(1)$ $1951$ |
| $(B)$ Family planning introduced in | $(2)$ $1971$ |
| $(C)$ Lactational - Amenorrhoea | $(3)$Natural contraveptive |
| $(D)$ $IUD $ | $(4)$progesterone |
| $(E)$ Pill | $(5)$Cu$-T$ |
| List $I$ (Interacting species) | List $II$ (Name of interaction) |
| $A$. A Leopard and a Lion in a forest/grassland | $I$. Competition |
| $B$. A Cuckoo laying egg in a Crow's nest | $II$. Brood parasitism |
| $C$. Fungi and root of a higher plant in Mycorrhizae | $III$. Mutualism |
| $D$. A cattle egret and a Cattle in a field | $IV$. Commensalism |
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