Single Choice

Consider the following statements concerning food chains. Which two of the statements are correct? (a) Removal of 80% tigers from an area resulted in greatly increased growth of vegetation. (b) Removal of most of the carnivores resulted in an increased population of dear. (c) The length of food chains is generally limited to 3-4 trophic levels due to energy loss. (d) The length of food chains may vary from 2-8 tropic levels Which two of the statements are correct?

AOnly (a) and (d)
BOnly (a) and (b)
COnly (b) and (c)
Correct Answer
DOnly (c) and (d)

Solution

1st statement is incorrect as removal of tigers from an area will result in decreased growth of vegetation as this will increase the increase in the population of deer which consumers more plants and thereby decreased vegetation.
2nd statement is correct as removal of most of the carnivores will result in increased population of deer as there are no animals to kill them.
3rd statement is correct as length of food chains is generally limited to 3-4 trophic levels in order to reduce energy loss as energy is loss at each trophic level and therefore sufficient energy would not be reach if chain has more then 4 trophic levels.
4th statement is incorrect as length of food chains does not varies from 2-8 trophic levels, it generally reaches upto 3-4 trophic levels in order to minimize the loss of energy.
Therefore, the correct answer is option C.

SIMILAR QUESTIONS

Ecology and Environment

Which of the following constitute a food-chain?

Ecology and Environment

Select the option that correctly identifies A, B and C in the given table. Organism Trophic level Food chain Eagle A Grazing Earthworm Primary consumer B Frog C Grazing

Ecology and Environment

Select the incorrect food chain.

Ecology and Environment

Which group of organisms are not constituents of a food chain? (i) Grass, lion, rabbit, wolf (ii) Plankton, man, fish, grasshopper (iii) Wolf, grass, snake, tiger (iv) Frog, snake, eagle, grass, grasshopper

Ecology and Environment

What will happen, if deer is missing in the food chain given below? Grass -----> Deer -----> Tiger

Ecology and Environment

Write the common food chain of a pond ecosystem.

Ecology and Environment

Show steps of food chains operating in: (a) Forests (b) Grasslands (c) Ponds

Ecology and Environment

Write true or false for the following statement: The length and complexity of food chains remain mostly the same.

Ecology and Environment

Consider the following statements concerning food chains. Which two of these statements are correct? (a) Removal of 80% tigers from an area resulted in greatly increased growth of vegetation. (b) Removal of most of the carnivores resulted in an increased population of deer. (c) The length of food chains is generally limited 3-4 trophic levels due to energy loss. (d) The length of food chains may very from 2 to 8 trophic levels.

Ecology and Environment

In a food chain, the maximum energy is stored in the

Contact Details