Identify the statement which is not matching with the description of the hormones. A) All hormones do not act upon all cells. B) The cell which are acted upon by hormones are called receptors cells. C) Hormones are chemically peptides, steroids, fatty acids or proteinds. D) Hormones are secreted by ductles glands.

What type of questions asked from the lesson of magnetic effect of electric current 

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?