STD 12 - 7. human health and disease — NEET STD 11 Science — Question

Assertion: Health is not only means 'absence of disease' or 'physical fitness'.
Reason: It is a state of complete physical, mental and social well-being.

Mechanism of hearing :
(i) The external ear receives sound waves and directs them to the ear drum.
(ii) Nerve impulses are generated in the associated afferent neurons.
(iii) The waves in the lymphs induce a ripple in the basilar membrane.
(iv) The vibrations are passed to the fluid of the cochlea, where generate waves in the lymphs.
(v) Vibrations are transmitted through the ear ossicles to the oval window.
(vi) The ear drum vibrates in response to the sound waves
(vii) Impulses are transmitted via auditory nerves to the brain, where the impulses are analysed and the sound is recognised
Choose correct sequence of mechanism of hearing :-

The secretion of glucagon causes

How many pairs of contrasting characters in pea plants were studied by Mendel in his experiments?

Given below are two statements:
Statement - I: Pyramid of energy is always upright and is the most efficient
Statement-II: Pyramid of biomass in sea is generally inverted.
In the light of the above statements, choose the most appropriate answer from the options given below:

Which of the following is an autoimmune disorder?