MCQ
Pollination which occurs in closed flowers is known as
- AAllogamy
- ✓Cleistogamy
- CDicliny
- DProtogyny
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| Primary sludge | Activated sludge |
| (i) It is sludge formed during primary-sew-age treatment | It is sludge formed during secondary sewage treatment |
| (ii) It possesses floes of decomposer microbes | It does not posses floes of decomposer microbes |
| (iii) It does not require aeration | Formation of activated sludge requires aeration |
| (iv) A lot of decomposition occurs during formation of primary sludge | Very little decomposition occurs during formation of activated sludge |
$A\;\;;\;\;B\;\;;\;\;C$
| List $I$ (Types of Stamens) | List $II$ (Example) |
| $A$. Monoadelphous | $I$. Citrus |
| $B$. Diadelphous | $II$. Pea |
| $C$. Polyadelphous | $III$. Lily |
| $D$. Epiphyllous | $IV$. China-rose |
Choose the correct answer from the options given below:
