Advertisements
Advertisements
Question
What does garbage consist of?
Advertisements
Solution
Garbage consists of leftover food, fruit, vegetable peels, fallen leaves of potted plants, waste paper, unwanted plastic objects, glass articles, metal objects, old wooden objects, rags, discarded shoes, sewage, etc.
APPEARS IN
RELATED QUESTIONS
What are trophic levels? Give an example of a food chain and state the different trophic levels in it.
What will happen if we kill all the organisms in one trophic level?
In the following food chain, 20,000 J of energy was available to the plants. How much energy would be available to man in this chain?
Plants → Sheep → Man
Which category of organisms forms the starting point of a food chain?
Write down a food chain which ends with humans.
The decomposers in an ecosystem ______.
What will happen if deer is missing in the food chain given below?
Grass → Deer → Tiger
In the figure given alongside, the various trophic levels are shown in the form of a pyramid. At which trophic level the maximum energy is available?

Write the percentage of energy transferred from autotrophs to the next level in a food chain.
Name the process in which a harmful chemical enters the food chain and gets concentrated at each trophic level.
The harmful chemical which is accumulating in human beings through food chain is :
(a) benzenehexachloride
(b) dichlorodiphenyltrichloroethane
(c) chlorofluorocarbon
(d) abscisic acid
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.
(a) In which organisms the pesticides enter from the polluted water? What is this level of organisms known as?
Primary consumers that eat plants are called _______.
Write the importance of the food chain.
If 100 J energy is available at the producer level in a food chain then the energy available to the secondary consumer will be ______.
What is Autotrophs?
Which group of organisms are not constituents of a food chain?
- Grass, lion, rabbit, wolf
- Plankton, man, fish, grasshopper
- Wolf, grass, snake, tiger
- Frog, snake, eagle, grass, grasshopper
In the following food chain, vertical arrows indicate the energy lost to the environment and horizontal arrows indicate energy transferred to the next trophic level. Which one of the three vertical arrows (A, C and E) and which one of the two horizontal arrows (B and D) will represent more energy transfer? Give reason for your answer.

A food chain in a forest ecosystem
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
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.
