STD 11 - 4. Animal kingdom — NEET STD 11 Science — Question

Select the correct statement

The first mammals arose

Body cavity also known as ........ in cockroach.

Pleural membrane is covering of

A severe fall in blood pressure disturbs the function of kidneys and reduces

It required large amount of water for its elimination.

Choose correct sequence of mechanism of vision
(i) The light rays in visible wavelength focused on the retina through the cornea and lens
(ii) Light induces dissociation of the retinal from opsin resulting in changes in the structure of the opsin
(iii) This causes membrane permeability changes.
(iv) Potential differences are generated in the photoreceptor cells rods and cones
(v) This produces a signal that generates action potentials in the ganglion cells through the bipolar cells.
(vi) These action potentials (impulses) are transmitted by the optic nerves to the visual cortex area of the brain.
(vii) Where the neural impulses are analysed and the image formed on the retina is recognised based on earlier memory and experience.

Tube feet are the characteristic structures of