MCQ
Mark the correct match
- ASecondary consumer -Zooplankton
- BPrimary coloniser -Viruses
- CNanoecosystem -Valley and forest
- ✓Omnivores -Cockroaches, Crows
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| List - $A$ | List - $B$ |
| $(a)$ Citrus canker | $(i)$ Fungi |
| $(b)$ Spongiform encephalopathy | $(ii)$ Prion |
| $(c)$ Herpes | $(iii)$ Virus |
| $(d)$ Red rot | $(iv)$ Bacteria |
| 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 |