Heredity and Evolution – Practice Questions | Class-X
VSA How do we come know that organisms had common ancestors? (2016) SA-I Is it necessary that the newly generated species is better than the older one? Explain by giving two points. (2014)
Management of Natural Resources – Practice Questions | Class-X
VSA What does the presence of Coliform bacteria in water indicate? (2015) Name any two wastes which can be recycled and reused. (2016) SA-I State the main purpose of water harvesting system and also mention the sources which fill the ponds behind harvesting structures. (2014) Compare reuse over recycling, a method for conservation of the…
Our Environment – Practice Questions | Class-X
VSA Write any two consequences if decomposers are removed from the ecosystem. (2014) Producers always occupy the first tropic level in any food chain. Justify the statement. (2014) Name the organism(s) belonging to fourth trophic level in the food chain comprising of: (2012) Snakes, Insects, Frogs, Plants, Hawks Name the chemical compound which depletes the…
How do Organisms Reproduce? – Practice Questions | Class-X
VSA Name the types of cells which undergo regeneration. (2016) Name the part of the embryo which gives rise to future shoot. (2015) How can the chromosomes be identified? (2014) Write the role of testes in male reproductive system. (2014)