Animal Kingdom — BIOLOGY STD 11 Science — Question

Name the most abundant among the formed elements of human blood. Mention its number in the blood.

Name the two additional chambers found in the alimentary canal of birds.

In most plants, the terminal bud suppresses the development of lateral buds into branches. What is this phenomenon called? Name one phytohormone that can promote this phenomenon.

What is a cell plate?

What do you understand by exopthalmic goitre?

With the help of which enzyme is transport of CO₂ done?

Define determinate growth.

In dicot leaves, how the vascular bundles are related to size of the veins?

Mention the number of carbon atoms in the primary carbon dioxide acceptor of (a) C₃ plants and (b) C₄ plants.

Name the disease in which there is a reduced renal absorption of water with a consequent elimination of large volume of very dilute urine. What is its cause?