Interdependence of Living Beings Quiz - ICSE Class 5 Science

Free practice quiz: Interdependence of Living Beings (ICSE Class 5 Science). 47 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This ICSE Class 5 Science practice quiz has 47 multiple-choice questions on Interdependence of Living Beings, and 47 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. Which of the following is an example of a producer in an ecosystem?

   1. Lion
   2. Grass
   3. Deer
   4. Fungi
   Show answer

   Answer: B. Grass

   Producers are organisms that create their own food, usually through photosynthesis. Grass is a plant and fits this definition. Lions are carnivores (consumers), deer are herbivores (consumers), and fungi are decomposers (consumers).

2. If the population of rabbits in a grassland increases significantly, what is a likely consequence for the grass population?

   1. The grass population will likely increase.
   2. The grass population will likely decrease.
   3. The grass population will remain unaffected.
   4. The grass will evolve to become less nutritious.
   Show answer

   Answer: B. The grass population will likely decrease.

   Rabbits are herbivores and feed on grass. An increase in the rabbit population means more grass will be consumed, leading to a potential decrease in the grass population.

3. What is the term for all the living organisms (plants, animals, fungi, bacteria) in a particular area?

   1. Habitat
   2. Ecosystem
   3. Community
   4. Biotic factors
   Show answer

   Answer: C. Community

   A community refers to all the different populations of species that live and interact in a particular area. Habitat is the place where an organism lives. An ecosystem includes both biotic (living) and abiotic (non-living) factors.

4. Which of the following interactions benefits both organisms involved?

   1. A lion hunting a zebra
   2. A tapeworm in a human's intestine
   3. A bee pollinating a flower
   4. A hawk catching a mouse
   Show answer

   Answer: C. A bee pollinating a flower

   A bee pollinating a flower is an example of mutualism. The bee gets nectar and pollen for food, and the flower gets pollinated, allowing it to reproduce. The other options are predation (lion/zebra, hawk/mouse) or parasitism (tapeworm/human).

5. What is the interaction between two species when they both consume the same limited food source?

   1. Mutualism
   2. Commensalism
   3. Competition
   4. Predation
   Show answer

   Answer: C. Competition

   When two species need the same resource, they compete for it, which can affect their populations and survival rates.

More questions in this quiz

Answers and explanations are in the full quiz.

1. A relationship where one organism benefits and the other is harmed is called:
2. The role of decomposers in an ecosystem is to:
3. A hawk catching and eating a mouse is an example of:
4. In a symbiotic relationship where both organisms benefit, it is called:
5. What would happen to an ecosystem if all the producers were removed?
6. Which of the following is a relationship where one organism lives on or inside another organism, causing it harm?
7. An example of a food chain is: Sun -> Grass -> Grasshopper -> Frog.
8. Which of the following are typically at the bottom of a food web, providing energy for all other organisms?
9. Which organism is likely to be a secondary consumer in a pond ecosystem where algae are producers and small fish eat algae?
10. The interaction where organisms compete for the same limited resources is called:
11. What is the role of a parasite in its relationship with its host?
12. Lichens are a classic example of mutualism. They are formed by a partnership between algae and fungi. What does each organism contribute?
13. Which trophic level do herbivores occupy in a food chain?
14. A scavenger is an organism that:
15. In a forest, a deer eats grass. A fox eats the deer. This represents a:
16. Which of the following is NOT a producer?
17. If a disease wiped out most of the earthworms in a soil ecosystem, how would this likely affect the plant life?
18. What is a symbiotic relationship where one organism benefits, and the other is harmed?
19. Which of the following is an example of a producer in an aquatic ecosystem?
20. A bird building its nest on a tree without harming or benefiting the tree is an example of:
21. Which organism is a decomposer in the following list: Bacteria, Rabbit, Grass, Hawk?
22. In a food web, what happens to the energy as it moves from one trophic level to the next?
23. If a forest ecosystem has a large population of deer that eat a lot of young saplings, what is a likely long-term effect on the forest's tree population?
24. Which of the following is a secondary consumer in a food chain where grass is eaten by a grasshopper, and the grasshopper is eaten by a frog?
25. What type of organism is a tick that feeds on the blood of a dog?
26. The role of bacteria and fungi in breaking down dead organisms is crucial for:
27. If the population of a predator decreases significantly, what is a likely effect on its prey population?
28. What is the term for the position an organism occupies in a food chain?
29. The relationship between a remora fish and a shark, where the remora attaches to the shark and eats leftover food scraps, while the shark is largely unaffected, is an example of:
30. If a large number of trees are cut down in a forest, what is a likely consequence for the insects that live on those trees?
31. Which trophic level do carnivores that eat herbivores occupy?
32. The Sun is essential for almost all life on Earth because it provides:
33. Which of the following is an example of a producer in a desert ecosystem?
34. An organism that eats only animals is called a:
35. Which of the following is a tertiary consumer in a food chain: Sun -> Grass -> Insect -> Bird -> Cat?
36. The interdependence of living beings means that:
37. Which organism helps to recycle nutrients by breaking down dead plant and animal matter?
38. What would happen to the population of the organism that eats the grass if the grass population started to decline due to drought?
39. A relationship where one organism benefits and the other is neither helped nor harmed is called:
40. In the food chain: Sun -> Phytoplankton -> Zooplankton -> Sardine -> Tuna. The sardine is a:
41. Which of the following describes a predator?
42. When two species compete for the same nesting sites, this is an example of:

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