Which hormone deficiency is responsible | Class 11 Biology Chapter Chemical Coordination and Integration, Chemical Coordination and Integration 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?

With the help of a schematic diagram describe the haplo-diplontic life cycle pattern of a plant group.

Distinguish between
(a) IRV and ERV
(b) Inspiratory capacity and Expiratory capacity
(c) Vital capacity and Total lung capacity

Name the cells/tissues in human body which
a. exhibit ameboid movement
b. exhibit ciliary movement

Water molecule is very polar. Polar end of molecule attracts opposite charges on another water molecule (acts like magnet). How will you
explain this property of water with reference to upward movement of water? Comment on the upward movement of water given the intermolecular hydrogen bonding in water.

Medicines are either man made (i.e., synthetic) or obtained from living organisms like plants, bacteria, animals etc. and hence the latter are
called natural products. Sometimes natural products are chemically altered by man to reduce toxicity or side effects. Write against each of
the following whether they were initially obtained as a natural product or as a synthetic chemical.
a. Penicillin ___________________________
b. Sulfonamide ___________________________
c. Vitamin C ___________________________
d. Growth Hormone ___________________________
 

Identify the sex of a frog in which sound producing vocal sacs are present.