What happens to glucose which enters the nephron along with the filtrate? Ans - Glucose along with filtrate runs down through the long...

State the function of Bowman's capsule and glomerulus. Answer - Bowman's capsule and glomerulus have semipermeable walls. The glomerulus,...

State the function of epiglottis. Ans - At the top of the trachea (or wind pipe) there is a flap of cartilage called epiglottis. The...

Name the membrane covering the lungs. Ans - Pleura

What is root pressure? [CBSE 2019] Answer - It is a pressure developed in the xylem due to metabolic activity of the root cells. It is a...

(i) What is compensation point? (ii) "All plants give out oxygen during day and carbon dioxide during night. Do you agree with this...

What is ascent of sap? Answer - Absorbed water from the soil also contains dissolved minerals (nitrates, phosphates, etc.) and hence it...

If salivary amylase is lacking in the saliva, which event in the mouth cavity will be affected? Answer - Starch breaking down into sugars.

What is common for Cuscuta, ticks and leeches? Answer - All are parasites. They derive their nutrition from plants or animals without...

What is the internal (cellular) energy reserve in autotrophs? Answer - Starch

Why does lack of oxygen in muscles often lead to cramps among cricketers? Answer - This happens due to the conversion of pyruvate to...

Which is the first enzyme to mix with food in the digestive system? Answer - Salivary amylase

Which part of root is involved in the exchange of respiratory gases in plants? Answer - Root hairs are involved in the exchange of...

Why do the walls of trachea not collapse when there is less air in it? Answer - Tracheal walls do not collapse when there is less air in...

What is the main function of kidneys in humans? Answer - Kidneys excrete water and dissolve metabolic wastes, e.g., urea and other...

What will happen if platelets were absent in the blood? Answer - In the absence of platelets, the process of clotting will be affected.

What will happen to a plant if its xylem is removed? [CBSE Delhi 2009] Answer - The xylem tissue transports water and minerals from the...

Define photolysis. Answer - The phenomenon of breaking down of water molecule using solar energy absorbed by chlorophyll molecules is...

Why is energy required by an organism even during sleep? Answer - This is because even when an organism is asleep, various biological...

How it can be proved that the basic structure of the Modern Periodic Table is based on the electronic configuration of atoms of different...