Botany Sir Himansu | ONLINE Bio Classes for NEET, CBSE , AP Biology

What is Fertilization in Plants? Process, Types & NEET Important Points Fertilization is the fusion of male and female gametes to form a zygote. In flowering plants, it is a unique process known as double fertilization. What is Fertilization? Fertilization is the process of fusion of male gamete (sperm) with the female gamete (egg) to form a diploid zygote. Process of Fertilization in Angiosperms Pollen grain germinates on the stigma and forms a pollen tube. Pollen tube grows through the style and reaches the ovule. It enters the embryo sac through the micropyle. Two male gametes are released. One male gamete fuses with the egg → Zygote (2n) Other male gamete fuses with polar nuclei → Primary Endosperm Nucleus (3n) Types of Fertilization Syngamy – Fusion of male gamete with egg cell Triple Fusion – Fusion of male gamet...

How Many Biodiversity Hotspots Are There in India? Answer: India has 4 biodiversity hotspots out of the 36 recognized worldwide. Biodiversity hotspots are regions that are both rich in endemic species and under significant threat of habitat loss. To qualify as a hotspot, an area must contain at least 1,500 endemic vascular plant species and have lost 70% or more of its original natural vegetation. The 4 Biodiversity Hotspots in India The Himalayas – Covers the entire Indian Himalayan region (including parts of Jammu & Kashmir, Ladakh, Himachal Pradesh, Uttarakhand, Sikkim, Arunachal Pradesh, etc.). Indo-Burma – Includes most of North-East India (Meghalaya, Tripura, Mizoram, Nagaland, Manipur, parts of Assam) and the Andaman Islands. Western Ghats – Runs along the western coast through Gujarat, Maharashtra, Goa, Karnataka, Kerala and ...