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प्रश्न
Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called ______.
विकल्प
decomposers
producers
herbivores
carnivores
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उत्तर
Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called producers.
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संबंधित प्रश्न
We do not clean natural ponds or lakes but an aquarium needs to be cleaned regularly. Why is it so ? Explain.
List two important roles play in the environment by decomposers.
Explain how the pesticides enter a food chain and subsequently get into our body.
What are planktons?
Construct a food chain comprising the following :
Snakes, Hawk, Rats, Plants
Name one decomposer.
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?
Which of the following represents a possible food chain found in a pond :
| Primary producers |
Primary consumers | Secondary consumers |
| (a) green algae | fish | mosquito larvae |
| (b) fish | green algae | mosquito larvae |
| (c) mosquito larvae | fish | green algae |
| (d) green algae | mosquito larvae | fish |
Which of the following is not a producer?
(a) grass
(b) zooplankton
(c) phytoplankton
(d) paddy
The following is a food chain that ends with human :
How does this food chain differ form a usual food chain involving human such as : plants → goat → human?
|
A food chain occurring in the sea which provides food for many people can be written as: phytoplankton → zooplankton → X → Y |
- Name one phytoplankton.
- Name two zooplanktons.
- What could be Х?
- Name the organism which Y could be.
- Which organism in the above food chain is a (i) primary consumer, and (ii) tertiary consumer?
With the help of a food chain, explain how biological magnification of harmful chemicals can occur.
What percentage of sun's energy falling on the leaves of green plants is utilised by the plants in the process of photosynthesis and stored as chemical energy of food?
(a) 99 per cent
(b) 10 per cent
(c) 1 per cent
(d) 20 per cent
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.
Which organism will have the maximum amount of pesticides accumulated through the food chain? What is this process known as?
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. |
The process of accumulation of harmful chemical substances like pesticides, in the body of living organisms at each trophic level of a food chain is known as ______.
If 100 J energy is available at the producer level in a food chain then the energy available to the secondary consumer will be ______.
______ obtained energy from the chemical breakdown of dead organisms.
Which of the following statements is correct?
Quaternary consumers are described as:
