The steps involved in spermatogenesis are given below. Arrange them in proper sequence and select the correct option.
A. Primary spermatocytes undergo the first meiotic division.
B. Spermatogonia multiply by mitotic division.
C. Transformation of spermatids into sperms.
D. Secondary spermatocytes undergo the second meiotic division.
E. Release of sperms from the seminiferous tubules.

Secondary spermatocytes undergo second meiotic division during spermatogenesis to produce.

Secondary spermatocytes undergo second meiotic division during spermatogenesis to produce

Secondary spermatocytes undergo second meiotic division during spermatogenesis to produce.

Given below are the steps involved in sewage treatment. Arrange them in proper sequence and select the correct option. A. Passage of primary effluent into large aeration tanks for mechanical agitation and pumping of air. B. Passage of secondary effluent and formation of activated sludge. C. Physical removal of particles through filtration and sedimentation D. Release of effluent from the secondary treatment plant into natural water bodies. E. Growth of useful aerobic microbes into flocs which significantly reduce the BOD.

Given below are the steps involved in sewage treatment. Arrange them in proper sequence and select the correct option. A. Passage of primary effluent into large aeration tanks for mechanical agitation and pumping of air. B. Passage of secondary effluent and formation of activated sludge. C. Physical removal of particles through filtration and sedimentation D. Release of effluent from the secondary treatment plant into natural water bodies. E. Growth of useful aerobic microbes into flocs which significantly reduce the BOD.

Given below are the steps involved in oogenesis . Arrange them in proper sequence and select the correct option. 1. Formation of primary follicle due to development of granulosa cells. 2 Division of oogonia and formation of the primary oocyte. 3. Formation of follicles having antrum . 4. Formation of secondary follicles. 5. An unequal division leading to the formation of secondary oocyte i.e. ovum and the first polar body .

Given below are the steps involved in oogenesis . Arrange them in proper sequence and select the correct option. 1. Formation of primary follicle due to development of granulosa cells. 2 Division of oogonia and formation of the primary oocyte. 3. Formation of follicles having antrum . 4. Formation of secondary follicles. 5. An unequal division leading to the formation of secondary oocyte i.e. ovum and the first polar body .

The steps involved in the mechanism of vision are given below. Arrange them in proper sequence and select the correct option. A. Dissociation of retinal from opsin and generation of potential difference in photoreceptor cells. B. Focusing of the light rays in visible wavelength on the corner through the lens. C. Generation of the action potential in ganglion cells through bipolar cells. D. Analysis of neural impulse and formation of aa image on the retina. E. Transmission of the action potential by the optic nerve to the visual cortex.

The steps involved in the mechanism of vision are given below. Arrange them in proper sequence and select the correct option. A. Dissociation of retinal from opsin and generation of potential difference in photoreceptor cells. B. Focusing of the light rays in visible wavelength on the corner through the lens. C. Generation of the action potential in ganglion cells through bipolar cells. D. Analysis of neural impulse and formation of aa image on the retina. E. Transmission of the action potential by the optic nerve to the visual cortex.