STD 12 - 8. microbes in human welfare — NEET STD 11 Science — Question

In poultry, new comb colour appears by colaboration of two dominant gene is

Select the correct match regarding adaptive radiation of Australian marsupials corresponding to placental mammals

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 :-

Which of the following hormones is not a secretory product of human placenta?

Process of spermatogenesis is under the regulatory influence of

The cortex extends in between the medullary pyramids as renal columns called

Which of the following statement is not correct about oral contraceptive pills?

‘Malaria' a common disease world wide is caused by a

Animals devoid of respiratory, excretory and circulatory organs are