Advertisements
Advertisements
प्रश्न
Explain the terms 'producer' and 'consumer'. Give two examples of producers and two of consumers.
Advertisements
उत्तर
Organisms that produce their own food from simple inorganic substances such as water and carbon dioxide are called producers. Examples are green plants and blue-green algae.
Organisms that consume the food prepared by producers are called consumers. Examples are cows and human beings.
APPEARS IN
संबंधित प्रश्न
List two biotic components of a biosphere.
"Our food grains such as wheat and rice, the vegetables and fruits and even meat are found to contain varying amounts of pesticide residues." State the reason to explain how and why it happens?
Fill in the following blank with suitable word :
In nature, all green plants are............ whereas animals are consumers.
Write down a food chain with five links in it.
Give one example of a simple food chain.
The decomposers in an ecosystem ______.
What will happen if deer is missing in the food chain given below?
Grass → Deer → Tiger
Write the percentage of energy transferred from autotrophs to the next level in a food chain.
Why are there rarely more than five links (or five organisms) in a food chain?
Fill in the following blank with suitable word :
Grass → ........... → Human
Calculate the amount of energy that will be available to big fish in the following food chain, if 10,000 J of energy is available to small algae from the sun :
Small algae → Zooplankton → Fish → Big fish
Primary consumers that eat plants are called _______.
Arrange the following in a correct sequence and form a food chain
Rabbit → Carrot → Eagle → Snake
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.
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?
Animals that eat both plants and animals are called as Carnivores.
In the following food chain, only 2J of energy was available to the peacocks. How much energy would have been present in Grass? Justify your answer.
GRASS → GRASS HOPPER → FROG → SNAKE → PEACOCK
Assertion (A): The energy which passes to the herbivores does not come back to autotrophs.
Reason (R): The flow of energy in a food chain is unidirectional.
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.
