
- Bam HI site: A restriction site for cloning.
- Ampicillin resistance gene: A selectable marker.
- ‘Ori’: Origin of replication, essential for plasmid replication.
- ‘Rop’ gene: Regulates plasmid copy number.
Consider the following food chain: Grass → Grasshopper → Frog → Snake → Eagle If the amount of energy available at third trophic level is 50 kJ, the available energy at the producer level was:
Assertion (A): Food web is a network of several food chains operating in an ecosystem.
Reason (R): Food web decreases the stability of an ecosystem.
We do not clean natural ponds or lakes, whereas an aquarium or a swimming pool needs to be cleaned regularly. Why?
