Biodiversity
- Which of the following environmentalists first gave the concept of Biodiversity 'Hotspots' ?
-
View Hint View Answer Discuss in Forum
The concept of biodiversity hotspots was originated by Norman Myers. To qualify as a biodiversity hotspot on Myers 2000 edition of the hotspot-map, a region must meet two strict criteria: it must contain at least 0.5% or 1,500 species of vascular plants as endemics, and it has to have lost atleast 70% of its primary vegetation.
Correct Option: C
The concept of biodiversity hotspots was originated by Norman Myers. To qualify as a biodiversity hotspot on Myers 2000 edition of the hotspot-map, a region must meet two strict criteria: it must contain at least 0.5% or 1,500 species of vascular plants as endemics, and it has to have lost atleast 70% of its primary vegetation.
- What term denotes the organisms getting their food from others ?
-
View Hint View Answer Discuss in Forum
The organism getting their food from other organisms are called as Heterotrophs. There are two classes of organisms on the basis of their source of food. 1-Autotrophs/Producer/Synthesizers e.g., plants and 2-Heterotrophs/Consumers e.g., Animals. All animals are dependent on plants for their food and other requirements so they are heterotrophs.
Correct Option: A
The organism getting their food from other organisms are called as Heterotrophs. There are two classes of organisms on the basis of their source of food. 1-Autotrophs/Producer/Synthesizers e.g., plants and 2-Heterotrophs/Consumers e.g., Animals. All animals are dependent on plants for their food and other requirements so they are heterotrophs.
- The amount of energy as it passes on from one trophic level to other in an ecosystem
-
View Hint View Answer Discuss in Forum
The amount of energy as it passes on from one trophic level to another in an ecosystem decreases. According to "10% law of energy transfer" given by Raymond Lindenan, the total energy which is transferred from one to another trophic level is 10% of the total energy, rest 90% gets consumed in metabolic activities. (of that trophic level itself).
Correct Option: B
The amount of energy as it passes on from one trophic level to another in an ecosystem decreases. According to "10% law of energy transfer" given by Raymond Lindenan, the total energy which is transferred from one to another trophic level is 10% of the total energy, rest 90% gets consumed in metabolic activities. (of that trophic level itself).
- Which one of the following is important strategy for the conservation of biodiversity ?
-
View Hint View Answer Discuss in Forum
Biosphere Reserve is an important strategy for the conservation of biodiversity. Biosphere Reserves in India roughly correspond to category 5 protected areas. There are 18 biosphere reserves present in India, which are managed and funded by central government.
Correct Option: A
Biosphere Reserve is an important strategy for the conservation of biodiversity. Biosphere Reserves in India roughly correspond to category 5 protected areas. There are 18 biosphere reserves present in India, which are managed and funded by central government.
- Which one of the following is the most important factor responsible for decline of biodiversity?
-
View Hint View Answer Discuss in Forum
Destruction of habitat is the most important factor responsible for decline in biodiversity. The disbalance in biodiversity taking place is just because of habitat fragmentation which results in loss of endangered animal and plant species.
Correct Option: C
Destruction of habitat is the most important factor responsible for decline in biodiversity. The disbalance in biodiversity taking place is just because of habitat fragmentation which results in loss of endangered animal and plant species.