Given below are certain biological statements which are incomplete and hence incorrect. Rewrite the correct form of the statement by inserting suitable word/words at right place. Do not delete any word already given in the statement. Underline the inserted word/words. The opening and closing of stomata is controlled by guard cells.

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?