The sea water contains water beetles, tadpole, fish and weeds.
(a) Write a food chain comprising all the given organisms.
(b) Which organisms in the food chain are (i) herbivore, and (ii) carnivores ?
(c) Which organisms are (i) predators, and (ii) prey ?
(d) Which organisms can trap solar energy to make food ?
(e) Which organism is a secondary consumer ?

Study the following food web Which organisms are primary consumers?

Which organism is not a consumer in the given pond food chain?

There are four organisms A, B, C and D. The organism A eats only the flesh of other animals as food. The organism B can eat grains, fruits and vegetables as well as meant and fish. The organism C can make the food itself from simple inorganic substances present in the environment by utilising sunlight energy. On the other hand, organism D eats only plants and their products as food. (a) Which organism is (i) omnivore (ii) herbivore, and (iii) carnivore ? (b) Which organism is an autotroph ? (c) Which organism is/are heterotrophs(s) ? (d) Which organism can be a producer ? (e) Which organism is/are consumer (s)? (f) Give one example each of organisms which could be like (i) A (ii) B (iii) C, and (iv) D

The illustration represents a food chain operating in an ocean. Which organism is the decomposer in the given food chain?

The combination of food chains form a food web. Which organism is the secondary consumer in the given options?

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.

The given illustration represents a food chain operating in a forest. Which organism is the decomposer in the given food chain?

The surface of water in a lake appears green due to a layer of tiny free-floating organisms X on its surface. The lake water also contains organisms like water beetle, fish and tadpole. The sun shines over the lake water and provides energy for the functioning of this lake ecosystem. (a) What could organisms X be ? (b) Write a food chain comprising of all the four organisms metioned. (c) What is the general name of the food chains like the one written above ? (d) Name (i) secondary consumer (ii) producer (iii) tertiary consumer, and (iv) primary consumer, in the above food chain. (e) If the tertiary consumer gets 0.2 J of energy from the secondary consumer, then how much energy was radiated by the sun to the producer ?

Which of the following organisms in the given food web act as a secondary consumers?

What name is given to those organisms : Which can make their own food ?