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प्रश्न
The following is a food chain that ends with human :
Do you think that the food chain given in this question can really be regarded as a food chain? Explain your answer.
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उत्तर
No, it cannot be regarded as a food chain, as humans do not consume bees directly but only consume the food made by them.
संबंधित प्रश्न
List two main components of ecosystem?
Which of the following constitute a food-chain?
Write down a food chain in the sea.
In a food chain, the initial organism is usually :
(a) photosynthetic
(b) herbivore
(c) saprophytic
(d) parasitic
In a food chain, the third trophic level is always occupied by :
(a) carnivores
(b) herbivores
(c) decomposers
(d) producers
Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called ______.
In the food chain comprising of a snake, grass, insect, and frog, the secondary consumer is :
(a) insect
(b) snake
(c) frog
(d) grass
(a) Match the terms given in column I with the terms given in column II and column III having the same meaning:
| Column I | Column II | Column III | |
| (i) | Secondary consumer | Herbivore | 1st trophic level |
| (ii) | Primary consume | Autotroph | 3rd trophic level |
| (iii) | Producer | Carnivore | 4th trophic level |
| (iv) | Tertiary consumer | Large carnivore | 2nd trophic level |
(b) Give one example of a food chain having four organisms. Below each organism write the three appropriate terms from the part (a) above which you think it represents.
The following statement is true or false:
Only 10 per cent of the light energy given by the sun is available for transfer at each higher trophic level in a food chain.
Name two predators of snakes in a food web operating in a forest ecosystem.
How much energy will be available to hawks in the food chain comprising hawk, snake, paddy and mice, if 10,000 J of energy is available to paddy from the sun?
A food chain comprises of cat, seed-eating bird, plants, and dog. The organism which will have the maximum concentration of harmful pesticides coming through the food chain is most likely to be :
(a) cat
(b) plants
(c) dog
(d) seed-eating bird
The harmful chemical which is accumulating in human beings through food chain is :
(a) benzenehexachloride
(b) dichlorodiphenyltrichloroethane
(c) chlorofluorocarbon
(d) abscisic acid
What are decomposers? What will be the consequence if the decomposers are completely eradicated from an ecosystem? Give justification in support of your answer.
Primary consumers that eat plants are called _______.
Bacteria and fungi are called decomposers.
In a given food chain if the amount of energy at the fourth trophic level is 6 kJ, what will be the energy available at the producer level?
A food chain comprising birds, green plants, fish and man. The concentration of harmful chemical entering the food chain will be maximum in ______.
Which of the following organisms occupies the role of a producer in a food chain?
Which organism in the food chain Grass → Insects → Thrush → Sparrow Hawk is classified as a tertiary consumer?
