POST FERTILISATION EVENTS
★Events in the sexual reproduction after formation of zygote.
★Zygote is the vital link that ensures continuity of species between organisms of one generation and the next.
★Every sexually reproducing organism, including human beings
begin life as a single cell–the zygote.
★ In the organisms, having external fertilisation, zygote is formed in external medium (water) and those having internal fertilisation zygote is formed inside the body of female.
★ In algae and fungi, zygote develops a thick wall resistant to desiccation and damage.
★This germinates after a period of rest.
★ In the organisms having haplontic life cycle, zygote divides to form haploid spores that germinate to form haploid individual
★Events in the sexual reproduction after formation of zygote.
★Zygote is the vital link that ensures continuity of species between organisms of one generation and the next.
★Every sexually reproducing organism, including human beings
begin life as a single cell–the zygote.
★ In the organisms, having external fertilisation, zygote is formed in external medium (water) and those having internal fertilisation zygote is formed inside the body of female.
★ In algae and fungi, zygote develops a thick wall resistant to desiccation and damage.
★This germinates after a period of rest.
★ In the organisms having haplontic life cycle, zygote divides to form haploid spores that germinate to form haploid individual
Body Fluid and CirculationNEET PYQS
BLOOD VESSELS
Arteries and veins
Both Artery and Veins consist of three layers
Tunica Intima - Inner lining of squamous Epithelium
Tunica Intima - Middle layer of Smooth muscle and elastic fibres
Tunica Externa- External Layer of Fibrous connective tissue with collagen fibres
Tunica media is thin in Veins
Biological ClassificationNEET PYQS
DINOFLAGELLATES
*
*Cell wall has Stiff Cellulose plates
*Two Flagella
1 Longitudinally
2 Transversely (Between the wall plates)
*Red Dinoflagellates(Eg Gonyaulax)
*Rapid Multiplication that's makes sea red(Red Tide )
*Gonyaulax released Toxins that kill marine Animals (Fish)
* Important terms related to Mirrors *
1. Pole: The centre point of the mirror through which the principal axis passes through the mirror is called the pole.
2. Principal axis: The straight line that will pass through the pole and the centre of curvature is called the principal axis.
3. Centre of curvature: The centre of the sphere of which the mirror or lens is a part is called the centre of curvature.
4. Radius of curvature: The radius of the sphere of which the mirror or the lens is a part is called the radius of curvature.
5. Focal point or focus: It is a point at which all the rays meet and we get a sharp image.
6. Focal length: The distance from the pole to the focal point is called the focal length.
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1. Pole: The centre point of the mirror through which the principal axis passes through the mirror is called the pole.
2. Principal axis: The straight line that will pass through the pole and the centre of curvature is called the principal axis.
3. Centre of curvature: The centre of the sphere of which the mirror or lens is a part is called the centre of curvature.
4. Radius of curvature: The radius of the sphere of which the mirror or the lens is a part is called the radius of curvature.
5. Focal point or focus: It is a point at which all the rays meet and we get a sharp image.
6. Focal length: The distance from the pole to the focal point is called the focal length.
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Forwarded from NEET EXAM PDF
Forwarded from NEET EXAM PDF