Perisperm differs from endosperm in A.Having no reserve food B.Being a diploid tissue C.Its formation by fusion of the secondary nucleus with several sperms D.Being a haploid tissue

Wavelength of green light is

A) 400-450 nm

B) 500-550 nm

C) 660-720 nm

D) 720-800 nm

What is the difference between anaerobic & aerobic respiration? Name some organism that uses the aerobic mode of respiration?

What are the main components of our environment? Explain each of them briefly.

What are examples of hydrotropism plants?

Why is water liquid at room temperature?