MCQ
The first mammals arose
- AAfter the extinction of dinosaurs
- BBefore the origin of dinosaurs
- ✓Alongwith the dinosaurs
- DFrom the dinosaurs
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$I.$ The total organic matter synthesised by the producers in the process of photosynthesis per unit time and area is known as gross primary productivity
$II.$ Net primary productivity is the weight of the organic matter stored by the producers in a unit area/volume per unit time