Q. No.Secondary productivity is the rate of formation of new organic matter by:
1. Parasite
2. Consumer
3. Decomposer
4. Producer
Pheretima and its close relatives derive nourishment from:
1. Sugarcane roots
2. Decaying fallen leaves and soil organic matter
3. Soil insects
4. Small pieces of fresh fallen leaves of maize
Identify the possible link A in the following food chain.
Green plantInsectFrogAEagle
1. Rabbit
2. Wolf
3. Cobra
4. Parrot
Given below is an imaginary pyramid of numbers. What could be one of the possibilities about certain organisms at some of the different levels?
| 1. | Level PC is insects and level SC is small insectivorous birds |
| 2. | Level PP is phytoplanktons in the sea and Whale on top-level TC |
| 3. | Level PP is pipal trees and the level SC is sheep |
| 4. | Level PC is rats and level SC is cats |
Which one of the following is not a functional unit of an ecosystem?
1. Energy flow
2. Decomposition
3. Productivity
4. Stratification
| 1. | It shows the energy content of different trophic-level organisms |
| 2. | It is inverted in shape |
| 3. | It is upright in shape |
| 4. | Its base is broad |
1. mangroves
2. tropical rainforests
3. alpine forests
4. temperate forests
| 1. | Detritus | 2. | Humus |
| 3. | Standing state | 4. | Standing crop |
2. about 50%
3. more than 80%
4. about 70%
© 2025 GoodEd Technologies Pvt. Ltd.