Two green plants are kept separately in oxygen , one in the dark and the other in continuous light. Which one will live longer? Give reasons.

Since leaves require light to perform photosynthesis, the colour of a leaf kept in the dark changes from a darker to a lighter shade of green. Sometimes, it also turns...

(c) ozone and oxygen

Hint—  (b) Onion peel has cell wall and RBC does not have cell wall

(a) There is little attraction between particles of gas. Thus, gas particles move freely in all directions. Therefore, gas completely fills the vessel in which it is kept.  (b) Particles of...

Answer: The color of leaves on a plant is dependent on the type of chlorophyll present in them. Explanation: Chlorophyll is an important pigment in the process of photosynthesis. Chlorophyll A is the most common...

(i) The leaves of plants contain green pigments called chlorophyll which is necessary for photosynthesis. Plants reflect green light of sunlight, so they look green. (ii) The skin of earthworm is...

No, all the starch stored in the leaf would have been used up by the plant. No starch would be synthesised afresh due to non-availability of sunlight.

(a) Man modifies his environment to fulfil his needs and make his life comfortable. He also modified his environment to adopt himself to the natural surroundings. (b) Plants and animals depend...

(i) On a humid day the air is full of water vapour. Hence, evaporation is very slow. This is the reason why wet clothes take longer time to dry on...

(c) increases EXPLANATION:  The focal length F of the combination is given as  1/F = 1/f₁ + 1/f₂  It is like resistors connected in parallel. The numerical value of equivalent resistance is less...