Ecosystem patterns and components
- Who is known as the father of Ecology in India? Answer: 2. Ramdeo Misra Key idea: Ramdeo Misra is known as the father of Ecology in India. S. R. Kashyap and Ram Udar are known for work on... 1
- Which one of the following will accelerate phosphorus cycle ? Answer: 4. Weathering of rocks Phosphorus comes mainly from rocks, and weathering of rocks releases phosphates into the soil, which speeds u... 1
- The amount of nutrients, such as carbon, nitrogen, phosphorus and calcium present in the soil at any given time, is referred as : Answer: 3. Standing state The amount of nutrients such as C, N, P and Ca present in the soil at a given time is the standing state. Standing... 1
- Which of the following is a secondary pollutant ? Answer: 4. O ₃ A secondary pollutant is formed in the air by reactions of primary pollutants; ozone is formed from NO _x and hydrocarbons in... 1
- Presence of plants arranged into well defined vertical layers depending on their height can be seen best in : Answer: 1. Tropical Rain Forest A tropical rain forest shows the best stratification, with well-defined vertical layers: emergent trees, can... 1
- Plants which produce characteristic pneumatophores and show vivipary belong to : Answer: 1. Halophytes Mangrove plants live in saline, waterlogged soil. They have pneumatophores (breathing roots) and show vivipary (seed g... 1
- Which ecosystem has the maximum biomass ? Answer: 4. Forest ecosystem Key idea: Biomass depends on the amount and size of the living organisms. A forest has large trees and a very la... 1
- The primary producers of the deep-sea hydrothermal vent ecosystem are Answer: 1. chemosynthetic bacteria No sunlight reaches deep-sea hydrothermal vents. The primary producers are chemosynthetic bacteria, which... 1
- The term ecosystem was coined by : Answer: 2. A.G. Tansley The term "ecosystem" was coined by A.G. Tansley (1935). Odum is known for ecosystem studies and the textbook "Fundam... 1
- Which of the following would appear as the pioneer organisms on bare rocks ? Answer: 1. Lichens On bare rock, lichens are the pioneer species of primary succession. They secrete acids, weather the rock and form soil,... 1
- Which one of the following is a characteristic feature of cropland ecosystem ? Answer: 2. Least genetic diversity Key idea: A cropland is a managed ecosystem where people grow one or a few crop species. This gives the l... 1