MCQ
Ecosystem may be defined as
- AGroup of plants which act as the energy suppliers
- BGroup of organisms which form population
- ✓Functional unit for ecological studies
- DNone of these
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$(I)$ Vertebrate hearts.
$(II)$ Vertebrate brains
$(III)$ Thorn and tendrils of Bougainvillea andcucurbita respectively
$(IV)$ Vertebrate limbs.
The correct combination is