STD 11 - 7. Structural organisation in animal — NEET STD 11 Science — Question

Which one of the following is anti-abortion hormone?

Cancer can be caused by the use of

Under a given concentration in blood, dissociation of oxyhaemoglobin will increase if

The shape of eye lens is changed by

Haemoglobin is having maximum affinity with

The diaphragm is a rubber dome shaped structure and stops the sperms from entering into

Assertion: Emphysema is a chronic disorder in which alveolar walls are damaged due to which respiratory surface is decreased.
Reason: One of the major causes of this is cigarette smoking.

Which of the following fossil men had religious feelings of worship and used burial customs?

Fill in the blanks and choose the correct option given below.
(i) A connects middle ear cavity with the pharynx.
(ii) The fluid filled inner ear is called B
(iii) Membranous labyrinth is surrounded by C fluid and it is filled with D fluid.
(iv) At the base of the cochlea, the scala vestibule ends at the E window, while the scala tympani terminate at the F window
(v) G is a structure located on the basilar membrane which contains hair cells
(vi) H cells act as auditory receptors.
(vii) A large number of processes called I are projected from the apical part of each cell.
(viii) Above the rows of the hair cells is a thin elastic membrane called J membrane.
(ix) The vestibular apparatus is composed of three K and L.
(x) The M and N are the specific receptors of the vestibular apparatus responsible for maintenance of balance of the body and posture.
(xi) The movements of O membrane bend the hair cells pressing them against P membrane, which result in generation of nerve impulse

What are all the chances of colour blind daughter and sons being born in a marriage of normal man marrying a normal woman, whose father was colour blind