Our Environment
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Our environment is a simple and basic quiz probing on the basic environmental knowledge. This is in regard to the living things and their relationships, including the non-living organisms. All the best as you attempt it.
- 1.In a food chain, the initial organism is usually:
- A.
Photosynthetic
- B.
Herbivore
- C.
Saprophytic
- D.
Parasitic
- 2.
- A.
Producer to decomposer
- B.
Producer to primary consumer
- C.
Primary consumer to secondary consumer
- D.
Secondary consumer to tertiary consumer
- 3.
- A.
(iii)
- B.
(iv)
- C.
(i) and (iii)
- D.
(ii) and (iv)
- 4.
![In the figure given alongside, the various trophic levels are shown in the form of pyramid. At what trophic level the maximum energy is available.]( "In the figure given alongside, the various trophic levels are shown in the form of pyramid. At what trophic level the maximum energy is available.")
In the figure given alongside, the various trophic levels are shown in the form of pyramid. At what trophic level the maximum energy is available.- A.
T4
- B.
T2
- C.
T1
- D.
T3
- 5.Sahara Desert was formed over a period of time due to one of the following uncontrolled activities of man:
- A.
Excessive cutting down of forests and trees
- B.
Excessive killing of large herbivorous
- C.
Excessive killing of large carnivores
- D.
Excessive use of poisonous chemical called herbicides
- 6.What percentage of sun’s energy falling on the leaves of green plants is utilized by the plants in the process of photosynthesis and stored as chemical energy of food?
- A.
1 percent
- B.
10 percent
- C.
20 percent
- D.
99 percent
- 7.The flow of energy in an ecosystem is always:
- A.
Unidirectional
- B.
Bidirectional
- C.
Cyclic
- D.
Multidirectional
- 8.The excessive exposure of humans to ultraviolet rays result in: (i) Damage to immune system (ii) Damage to lungs (iii) Skin cancer (iv) Peptic ulcers
- A.
(i) and (ii)
- B.
(ii) and (iv)
- C.
(iii) and (iv)
- D.
(i) and (iii)
- 9.Most of the water surface of a lake is covered with algae. This algae is a part of the food chain which also includes small fish, bird, larvae and big fish. Which of the following will obtain the maximum energy?
- A.
Big fish
- B.
Bird
- C.
Larvae
- D.
Small fish
- 10.If the energy transferred to a tertiary consumer in a food chain is 10 J, how energy was available to the primary consumer?
- A.
100 J
- B.
500 J
- C.
1000 J
- D.
5000 J
- 11.O2 is converted into O3 by the action of:
- A.
Infrared radiations
- B.
Ultraviolet radiations
- C.
Gamma radiations
- D.
Cosmic radiations
- 12.The ten percent law is associated with:
- A.
Transfer of energy from various trophic levels to decomposers in a food chain
- B.
Transfer of chemical energy from one organism to another
- C.
Transfer of ATP energy into muscular energy
- D.
Transfer of sun’s energy to the organisms called producers
- 13.What will happen if deer is missing in the food chain given below? Grass
- A.
The population of tiger increases
- B.
The population of grass decreases
- C.
Tiger will start eating grass
- D.
The population of tiger decreases and the population of grass increases
- 14.Name the process in which a harmful chemical enters the food chain and gets concentrated at each level in the food chain.
- A.
Concentration
- B.
Biomagnifications
- C.
Expansion
- D.
Pollution
- 15.A natural phenomenon that becomes harmful due to pollution is
- A.
Global warming
- B.
Ecological balance
- C.
Greenhouse effect
- D.
Desertification
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