Consider statements about the environment: 1. The ozone layer is in the stratosphere. 2. CFCs deplete the ozone layer. 3. Global warming is caused by excess oxygen. Which are correct? MCQ with Answer and Explanation

Explanation:
Biodiversity hotspots are biogeographic regions with high levels of species richness and endemism that are under threat. The Western Ghats and Sri Lanka, along with the Himalayas, are recognized biodiversity hotspots in India. They harbor a vast array of flora and fauna, many of which are found nowhere else in the world, due to their unique geographical and climatic conditions.

Explanation:
Pneumatophores are negative geotropic, spongy roots that grow upwards out of the water or mud to obtain oxygen in anaerobic, waterlogged soils. They are a characteristic adaptation of mangrove plants like Rhizophora (mangrove). Orchids have epiphytic aerial roots, Cuscuta has parasitic haustoria, and Nepenthes has modified pitcher leaves for insectivory.

Explanation:
Binary fission is a type of asexual reproduction in prokaryotes where the cell divides into two identical daughter cells after DNA replication. Mitosis and meiosis are eukaryotic. Budding occurs in yeast and some bacteria.