SSC Ecology and Environment Set- 1
Total Questions:- 50
Time:- 30 Minutes
TCS Pattern MCQs
Date:- 28/07/2026
1. What is the basic requirement for the functioning and maintenance of an ecosystem?
2. Identify the possible link “X” in the following food chain? Grass→Insect→Frog→X →Eagle
3. The word 'ecology' is derived from the ______ word 'Oekologie'.
4. Which of the following is an abiotic component that constitutes the environment?
5. How the standing crop is measured in a particular trophic level?
6. What are interspecies interactions called that have a positive effect on per individual reproduction and/or survival of the species involved?
7. Deserts, rain forests, coral reefs and mangroves are features of ______ diversity.
8. Which is/are NOT Abiotic components?
I. Plants
II. Animals
III. Water
9. Small, marine-dwelling organisms, phytoplankton, are related to which trophic level in the food web?
10. Which of the following is not abiotic?
11. Which of the following is an example of an artificial ecosystem?
12. A living part of the organisms environment is known as
13. A pyramid of biomass is a diagram that represents the population at each level of the food chain. According to it,________, occupies the base with the highest biomass.
14. Which of the following is grazing food chain?
15. Which of the following options correctly represents the matching of trophic levels in Column-A with the examples in Column-B?
| Column-A | Column-B |
|---|
| i. First Trophic Level | a. Humans |
| ii. Second Trophic Level | b. Phytoplankton |
| iii. Third Trophic Level | c. Zooplankton |
| iv. Fourth Trophic Level | d. Fishes |
16. Taiga is an example of which type of ecosystem?
17. Which of the following is NOT manmade ecosystem?
18. Who coined the term “Ecology”?
19. The pyramid of energy is……….
20. Which among the following ecosystem have inverted biomass pyramid?
21. Human Beings belong to which category of the ecosystem?
22. Which of the following are the largest fixator of solar energy?
23. Which among the following is NOT classified under consumers?
24. Which of the following is not considered as a part of the Abiotic Environment?
25. Select the correct statement–
26. In 1866, who proposed a new term 'Oecologie', which defines the study of the relationships of organisms with their environment?
27. Which of the following is/are Abiotic components?
I. Rocks
II. Plants
III. Soil
28. Identify correct type of food chain: Grass→ Rabbit→Fox
29. In 1972,_______coined the term 'pyramid of numbers', which represents the total number of individuals (population) at each trophic level.
30. The large carnivorous or the tertiary consumers exist at which level of the food chain?
31. At which level of the food chain are millipedes, springtails, woodlice, dung flies, and snails included that obtain nutrition from dead or decaying plants or animals?
32. Components included information of any ecology:-
33. Which among the following is not an abiotic component of an ecosystem?
34. Which of the following ecologists is famous for studying the life of plants in the Indiana Dunes in 1896?
35. What is the correct sequence of zones in a pond ecosystem from bottom to top?
36. Out of the following four, three are ecological pyramids, thus forming a group. Which one does not belong to this group?
37. The narrow zone of contact between lithosphere, hydrosphere and atmosphere where natural vegetation and wildlife exist is called ........
38. The part of the earth's surface and atmosphere where plants and animals live is called ––––.
39. Who conducted the study on the 'Trophic-Dynamic Aspect of Ecology' in the year 1942?
40. In biological terms, ––––– is a relationship between two organisms in which one organism benefits and the other is unaffected.
41. Which ecologist's research provided revolutionary new insight into how energy and nutrients flow through ecosystems?
42. Which of the following is parasitic food chain?
43. The vertical distribution of different species occupying different level is called__________.
44. All green plants and certain blue-green algae which can produce food by photosynthesis are called the ____.
45. What is called the total number of organisms living in both plants and animals in a given area?
46. How many types of ecological pyramids are present in ecosystem?
47. The ––––– is a the narrow zone we find land, water and air together which contains all forms of life.
48. Grassland ecosystem has which type of biomass pyramid?
49. The study of relation of animals and plants to their surroundings is called ______.
50. Sunlight forms which component of habitat?
