National Parks and Sanctuaries in Rajasthan

1. The term ecosystem was coined by                                                                                          A. Bennett. J.W.              B.  Odum. E.R                                                                                          C. Tansley                         D.  Walter, H.

2. The term ecology was coined by:                                                                                               a. Eton                                  b. HaeckeL       c. Odum, E.P .                     d. Thomas. D.S.G.

3. Consider the following statements and select the correct answer using the code given below:
4. The web that links all organisms with their physical environment is known as biosphere.
5. The biosphere extends from the bottom of the ocean trenches up to 8 km above the sea level.
6. Biosphere is synonymous with ecosphere
7. Biosphere is found only on Earth in the Solar System.

Code:

1. 1,2 and 3 arc correct, b. 1,3 and 4 are correct,
2. 2, 3 and 4 are correct. d. 1, 2, 3 and 4 are correct.

4. Consider the following statements and select the correct answer using the code given below
5. The scientific study of the interaction between organisms and environment is known as ecology.
6. The term ecology was coined by Odum, E.R

Code:

1. Only 1 is correct. b. Only 2 is correct.
2. Both 1 and 2 are correct. d. Neither 1 nor 2 is correct.

5. Consider the following statements and select the correct answer using the code given below:

1 Phosphorus is abundant in nature                           .

2. Phosphorus is an excretory product.
3. Phosphorus cycle can be disrupted by the use of chemical fertilizers.
4. Phosphates in the soil are taken into the plant for protection.

Code:

1. 1,2 and 3 are correct. b. 1,3 and 4 are correct
2. 2, 3, and 4 are correct. d. 1, 2, 3 and 4 are correct.
3. The mean productivity is highest in which of the following?
4. Grassland b. Continental shelf
5. Cultivated land d. Fresh water
6. Consider the following statements and select the correct answer using the code that follows:
7. A food chain is the sequence of energy transfer from the low er levels to the higher trophic levels.
8. All animals depend on plants for their food.
9. Fox may eat grass.

Code:

1. 1 and 2 arc correct. b. 1 and 3 are correct
2. 2 and 3 are correct. d. 1, 2 and 3 are correct.

8. Which one of the following is not a primary consumer:
9. Buffalo b. Goat
10. Lizard d. Rabbit

9. Which one of the following is not a tertian- consumer?
10. Frog b. Leopard
11. Lion d. Vulture
12. Arrange the following animals in a sequential trophic level and select the correct answer using the code given below:
13. Eagle 2. Frog
14. Insect 4. Plant
15. Snake

Code:

1. Plant, insect, frog,eagle and snake
2. Plant, insect, frog, snake and eagle
3. Plant, frog,insect, snake and eagle
4. Plant,insect,frog, eagle and snake