Yellowish edges appear in leaves deficie | Class 11 Biology Chapter Mineral Nutirtion, Mineral Nutirtion NCERT Solutions

Define a taxon. Give some examples of taxa at different hierarchical levels.

What are the steps involved in formation of a root nodule?

Describe the digestive role of chymotrypsin. What two other digestive enzymes of the same category are secreted by its source gland?

There has been an increase in the number of chambers in heart during evolution of vertebrates. Give the names of the class of vertebrates having two, three or four-chambered heart.

Stolon, offset and rhizome are different forms of stem modifications. How can these modified forms of stem be distinguished from each other?

Match the following:
Animals                   Locomotory Organ
a. Octopus               i. Limbs
b. Crocodile             ii. Comb plates
c. Catla                    iii. Tentacles
d. Ctenoplana          iv. Fins

What is special about tissue present in the heart?

What structural and functional attributes must a cell have to be called a living cell?
 

Match the following
a. Amphibia                   i. Air bladder
b. Mammals                  ii. Cartilaginous notochord
c. Chondrichthyes         iii. Mammary glands
d. Ostichthyes               iv. Pneumatic bones
e. Cyclostomata            v. Dual habitat
f. Aves                          vi. Sucking and circular mouth without jaws.