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प्रश्न
Some hunters are roaming in the plush green forest of Africa. They spot a deer and kill it. They decide to roast the deer there and then and eat it. When the hunters had just finished enjoying the feast of roasted deer, a lion attacks them. The lion kills one of the hunters and eats his flesh.
(a) write a food chain which provides food to lion in this case.
(b) Which animal (other than deer) the lion could look for food if he did not get the hunter as prey?
(c) Which other animal in the forest could have been in place of lion?
(d) How does the above food chain differ form the food chain such as : plants → goat → man?
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उत्तर
(a) The following is the food chain that provides food to the lion in the given case:
Plants→Deer→Man → Lion
(b) The lion could have looked for a herbivore, such a wild buffalo or a zebra, if it he had not got the hunter as prey.
(c) Any top consumer, such as a tiger or a python, could have been in the place of the lion in the forest.
(d) In the food chain,
Plants→ Goat→ Man
man is the top consumer whereas, in the food chain,
Plants→ Deer→ Man→ Lion,
the top consumer is lion.
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संबंधित प्रश्न
Which of the following are always at the second tropic level of food chains?
The first trophic level in a food chain is always a green plant. Why ?
Which of the following belong to the same trophic level?
Tree ; Frog ; Snake ; Grass ; Lizard
Draw the food chain with four trophic levels.
Write down a food chain which ends with humans.
At which trophic level a person is feeding when he is eating eggs.
At which trophic level a person is feeding when he is eating fish.
Write one or two word for the following statement/definition :
Each level of food chain where transfer of energy takes place
The sea water contains water beetles, tadpole, fish and weeds.
Which organism is a secondary consumer?
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
What could be X?
What would happen to the number of grass plants and foxes if the number of rabbits increased?
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
A food chain consists of fish, larvae, phytoplanktons and birds. The level of pesticides in water in which the fish, larvae and phytoplanktons live is quite high.
Write the food chain comprising all the organisms mentioned above.
"Energy flow in food chains is always unidirectional". Justify this statement. Explain how the pesticides enter a food chain and subsequently get into our body.
Give some examples for Biodegradable and Non-biodegradable waste.
| S. No. | Biodegradable waste | Non-biodegradable waste |
| 1. | Food Waste | Plastic Bottles |
| 2. | ||
| 3. | ||
| 4. | ||
| 5. |
Food chains are very important for the survival of most species.
Matter and energy are two fundamental inputs of an ecosystem. Movement of:
Analogy:
Primary Consumer: Goat, Cow:: Secondary Consumer: ______.
What is Autotrophs?
Study the picture given below showing three food chains (a), (b) and (c) and answer the following questions:
- Name the type of ecosystems that exist in food chains (b) and (c).
- The first trophic level in all food chains is producers. Why? What percentage of solar energy do these producers capture for their use?
- Why are the arrows shown in the diagram in one direction only and not vice versa? Justify.
