Q. No.
Large woody vines are more commonly found in:
1. mangroves
2. tropical rainforests
3. alpine forests
4. temperate forests
1. mangroves
2. tropical rainforests
3. alpine forests
4. temperate forests
1. temperate deciduous forests
2. alpine forests
3. scrub forests
4. tropical rain forests
Which of the following ecological pyramids is generally inverted?
| 1. | Pyramid of biomass in a sea |
| 2. | Pyramid of numbers in grassland |
| 3. | Pyramid of energy |
| 4. | Pyramid of biomass in a forest |
Which one of the following statements is correct for secondary succession?
| 1. | It occurs on a deforested site |
| 2. | It follows primary succession |
| 3. | It is similar to primary succession except that it has a relatively slow pace |
| 4. | All of the above |
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
If 20 J of energy is trapped at the producer level, then how much energy will be available to peacocks as food in the following chain?
Plant → mice → snake → peacock
| 1. | 0.02 J | 2. | 0.002 J |
| 3. | 0.2 J | 4. | 0.0002 J |
Given below is a simplified model of phosphorus cycling in a terrestrial ecosystem with four blanks (A-D). Identify the blanks.
| A | B | C | D | |
| 1. | Rock minerals | Detritus | Litter fall | Producers |
| 2. | Litter | Producers | Rock minerals | Detritus |
| 3. | Detritus | Rock minerals | Producers | Litter fall |
| 4 | Producers | Litter fall | Rock minerals | Detritus |
Most animals are tree dwellers in a:
2. thorn woodland
3. temperate deciduous forest
4. tropical rainforest
In an ecosystem, the rate of production of organic matter during photosynthesis is termed as:
1. net primary productivity
2. gross primary productivity
3. secondary productivity
4. net productivity
In which of the following, do both pairs have the correct combination?
| 1. | Gaseous nutrient cycle Sedimentary nutrient cycle |
Carbon and nitrogen Sulphur and phosphorous |
| 2. | Gaseous nutrient cycle Sedimentary nutrient cycle |
Carbon and sulphur Nitrogen and phosphorus |
| 3. | Gaseous nutrient cycle Sedimentary nutrient cycle |
Nitrogen and sulphur Carbon and phosphorous |
| 4. | Gaseous nutrient cycle Sedimentary nutrient cycle |
Sulphur and phosphorous Carbon and nitrogen |
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