In a food chain of frog, grass, insect, and snake, assign trophic level to frog.

Academic Biology NCERT Class 10

In a food chain of Grass --> Insect --> Frog --> Snake, frog occupies third trophic level as it eats insects and further becomes the food for the snake.

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Updated on: 20-Mar-2023

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In the food chain comprising of a snake, grass, insect, and frog, the secondary consumer is :(a) insect (b) snake (c) frog (d) grass
Which of the following belong to the same trophic level ? Tree; Frog; Snake; Grass; Lizard.
In a food chain consisting of grass, frog, bird and insects, where will the concentration of the harmful chemicals be maximum?
In the food chain given below, if the amount of energy available at fourth trophic level is 5 kJ, what was the energy available at the producer level?Grass → Grasshopper → Frog → Snake → Hawk(a) 500 kJ (b) 50 kJ (c) 5000 kJ (d) 5 kJ
What is meant by trophic level in a food chain? Construct a terrestrial food chain with four trophic levels. The energy flow in a food chain is always unidirectional. Why?
(a) Define trophic level. Draw the food chain with four trophic levels.(b) What will happen if we kill all the organisms in one trophic level?
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Which of the following group of organisms are not constituents of a food chain?grass, lion, rabbit, wolfplankton, man, fish, grasshopperwolf, grass, snake, tigerfrog, snake, eagle, grass, grasshopper(a) (i) and (iii)(b) (iii) and (iv)(c) (ii) and (iii)(d) (i) and (iv)
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Name the process in which a harmful chemical enters the food chain and gets concentrated at each trophic level.
What percentage of energy available at the producer level is transferred at successive trophic levels in a food chain?
A forest ecosystem having a lot of green plants has some foxes, lions and rabbits in it.(a) Write a food chain comprising all the four organisms mentioned above.(b) Name (i) one herbivore, and (ii) two carnivores, in this food chain.(c) Name the link which is a predator as well as a prey.(d) Name (i) second trophic level, and (ii) third trophic level.(e) Which link of this food chain can feed on second trophic level as well as third trophic level, independently?(f) If the sun provides 1000 J of energy to the plants, then how much energy will be transferred to fox through the food chain.
In a food chain, the third trophic level is always occupied by :(a) carnivores (b) herbivores (c) decomposers (d) producers
Organisms of a higher trophic level which feed on several types of organisms belonging to a number of lower trophic levels constitute the :(a) ecosystem (b) food web (c) ecological pyramid b> (d) food chain
Which of the following limits the number of trophic levels in a food chain?(a) insufficient food supply from producer level(b) decrease in energy at higher trophic levels(c) increase in the number of organisms at higher trophic levels(d) accumulation of harmful chemicals at higher trophic levels

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