Advertisements
Advertisements
Question
(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.
Advertisements
Solution
| Column I | Column II | Column III |
| (1) Secondary consumer | Carnivore | 3rd trophic level |
| (2) Primary consumer | Herbivore | 2nd trophic level |
| (3) Producer | Autotroph | 1st trophic level |
| (4) Tertiary consumer | Large carnivore | 4th trophic level |
(b)
Grass → Grasshopper → Frog → Snake
| Organism | Column I |
Column II | Column III |
| Grass | Producer | Autotroph | 1st trophic level |
| Grasshopper | Primary consumer | Herbivore | 2nd trophic level |
| Frog | Secondary consumer | Carnivore | 3rd trophic level |
| Snake | Tertiary consumer | Large carnivore | 4th trophic level |
APPEARS IN
RELATED QUESTIONS
The first trophic level in a food chain is always a green plant. Why ?
List two main components of ecosystem?
We do not clean natural ponds or lakes but an aquarium needs to be cleaned regularly. Why is it so ? Explain.
Give an example of a four step food chain operating in grassland. Name the secondary consumer in this food chain
At which trophic level a person is feeding when he is eating roasted chicken.
A student went to study a local pond. In one part of the pond she noticed tadpoles scraping at some pond weed. In another part she saw a water beetle holding a tadpole in its jaws.
(a) Construct a food chain for the pond.
(b) How many links are there in this chain?
Write one or two word for the following statement/definition :
Organisms which depend on the producers for food either directly or indirectly
What is a 'food web'? Show its formation.
Which of the following are decomposers of dead organisms?
| Bacteria | Fungi | Viruses |
| (a) no | yes | yes |
| (b) yes | no | yes |
| (c) yes | yes | no |
| (d) yes | yes | yes |
Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called ______.
If a harmful chemical enters a food chain comprising cat, mice and plants, which one of these organisms is likely to have the maximum concentration of the harmful chemical in its body?
Explain how harmful chemicals enter our bodies.
What does garbage consist of?
An aquatic food chain comprises of the organisms like tadpoles, weeds, fish and water beetles. The organism which gets the minimum energy through this food chain is :
(a) water beetles
(b) tadpoles
(c) weeds
(d) fish
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.
What would happen if an organism is removed from the food chain?
Food chains are very important for the survival of most species.
If 10,000 J solar energy falls on green plants in a terrestrial ecosystem, what percentage of solar energy will be converted into food energy?
______ obtained energy from the chemical breakdown of dead organisms.
The sequence of who eats whom in an ecosystem is called as ______.
