Which of the following statements about food chain are correct? (a) It includes repeated eating, i.e. each group eats the other and is subsequently eaten by some other group of organisms. (b) It shows a series of branching lines and unidirectional flow of energy. (c) It shows the unidirectional flow of energy and proceeds in a progressive straight line. (d) Both (a) and (c)

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?