Which of the following is most often a limiting factor of the primary productivity in any ecosystem?
- ACarbon
- BNitrogen
- ✓Phosphorus
- DSulphur
Answer: C.
View full solution →Question types
Ecosystems and Energy Flow question types
323 questions across 10 question groups — pick any mix to generate a BIOLOGY paper with step-by-step answer keys.
323
Questions
10
Question groups
5
Question types
01
MCQ
95 Q→02Answer the following questions
88 Q→03Answer the following questions.
29 Q→04Answer the following questions in detail.
31 Q→05Answer the following questions in detail.
32 Q→06Complete the following table.
4 Q→07Diagram based question.
12 Q→08Write the short note.
7 Q→09Answer the following in detail :
19 Q→10Case study (4 Marks)
6 Q→Sample Questions
Ecosystems and Energy Flow questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
After landslide which of the following type of succession occurs?
- ✓Primary
- BSecondary
- CTertiary
- DClimax
Answer: A.
View full solution →Give the term used to express a community in its final stage of succession?
- AEnd community
- BFinal community
- ✓Climax community
- DDark community
Answer: C.
View full solution →What is the % of photosynthetically active radiation in the incident solar radiation?
- A100%
- ✓50%
- C1-5%
- D2-10%
Answer: B.
View full solution →Secondary consumers are …………………….
- AHerbivores
- BProducers
- ✓Carnivores
- DAutotrophs
Answer: C.
View full solution →Name the reservoir and sink of carbon in carbon cycle.
Which mineral acts as limiting factor for productivity in an aquatic ecosystem?
Give an example of ecosystem which shows inverted pyramid of biomass.
Give an example of ecosystem which shows inverted pyramid of numbers.
State the 10% law. Who gave this law?
Explain the following terms with reference to ecological succession : Xerosere.
Explain the following terms with reference to ecological succession : Hydrosere.
What is climax community? What leads to such a community?
Name the following : Sequential steps in process of succession.
Name the following : The important steps in the process of decomposition.
Food chain and Food web.
Upright and inverted pyramid of biomass.
What is secondary productivity? What is annual net primary productivity of biosphere?
What is the maximum number of trophic levels in a food chain?
From algae to forest, explain in relation with the succession.
Describe carbon cycle and add a note on the impact of human activities on carbon cycle.
Write important features of a sedimentary cycle in an ecosystem.
Define decomposition and describe the processes and products of decomposition.
What is primary productivity? Give brief description of factors that affect primary productivity.
Define ecological pyramids and describe with examples, pyramids of number and biomass.
| Trophic levels | Type of organisms | Status | Example |
| …………….…. | …………………….. | Secondary consumer | …………………….. |
| ……………..… | Herbivore, Heterotrophs | …………………….. | ……………………. |
| ……………..… | Autotrophs | ……………………. | Phytoplankton, grass, trees |
Classify the following:
Xerarch, Epipelagic, Hydrosere, Sublittotral, Intertidal, Benthic.
Xerarch, Epipelagic, Hydrosere, Sublittotral, Intertidal, Benthic.
| Phenomena | Examples |
| (1) Stratification | ————– |
| (2) Zonation | ————— |
| (3) Succession | ————– |
Classify the following:
Estuarine waters, Taiga, Aquarium tank, Lake, Evergreen forest, Flower garden.
Estuarine waters, Taiga, Aquarium tank, Lake, Evergreen forest, Flower garden.
| Types of ecosystems | Examples |
| (1) Aquatic | ————– |
| (2) Terrestrial | ————— |
| (3) Artificial | ————– |
Classify the following
Nature trails, Pollination, Sea food, Carbon sequestration, Animal therapy, Pest control, Health care, Nutrient cycling.
Nature trails, Pollination, Sea food, Carbon sequestration, Animal therapy, Pest control, Health care, Nutrient cycling.
| Column A | Column B |
| (1) Supporting services | ________________ |
| (2) Provisioning services | ________________ |
| (3) Regulating services | ________________ |
| (4) Cultured services | ________________ |
Identify A, B, C and D in the following simplified model of phosphorus cycling in a terrestrial ecosystem.
Identify the likely organisms (1), (2), (3) and (4) in the food web given below:
Observe the diagram and answer the questions
1. Fill in the empty boxes with proper words in the above figure.
2. Which cycle is it depicting?
3. What kind of cycle is it?
1. Fill in the empty boxes with proper words in the above figure.
2. Which cycle is it depicting?
3. What kind of cycle is it?
Identify A, B, C, D and E given in sketch of carbon cycle
Observe the given figure and answer the questions:
Questions:
1. Which trophic level has maximum energy?
2. Why carnivores have least energy shown in this diagram?
Questions:
1. Which trophic level has maximum energy?
2. Why carnivores have least energy shown in this diagram?
Succession in aquatic habitat.
Pioneer species.
Succession of Plants.
Secondary succession.
Primary succession.
How would you explain inverted pyramid of biomass in oceanic ecosystem?
Why is zonation more pronounced at the edges of habitat?
What are the types of ecosystems? Give their suitable examples.
What are the most important ecological services whose value cannot be determined?
Succession of Plants.
| Column A | Column B |
| (1) Pioneer species | (a) Entire gradient of communities |
| (2) Climax species | (b) Spatial pattern |
| (3) Succession | (c) Quercus |
| (4) Sere | (d) Crustose lichen |
| Column A | Column B |
| (1) Rooted floating angiosperm | (a) Cyperus |
| (2) Free-floating plant | (b) Typha |
| (3) Reed swamp | (c) Pistia |
| (4) Marsh-meadow | (d) Lotus |
| Column A | Column B |
| (1) Tansley | (a) 10% law |
| (2) C. Elton | (b) Ecosystem services |
| (3) R. Lindemann | (c) Ecological pyramids |
| (4) Millennium Ecosystem Assessment report | (d) Ecosystem |
Distinguish between : Carbon cycle and phosphorus cycle.
Distinguish between : Primary and secondary succession.
Generate a Ecosystems and Energy Flow paper free
Pick question groups from the list above, set marks and difficulty, and export a branded PDF with step-by-step answer keys. First 3 chapters free — no signup.