Advertisements
Advertisements
Question
What will happen if deer is missing in the food chain given below?
Grass → Deer → Tiger
Options
The population of tiger increases
The population of grass decreases
Tiger will start eating grass
The population of tiger decreases and the population of grass increases
Advertisements
Solution
The population of tiger decreases and the population of grass increases
Explanation -
In the given food chain, the grass is eaten by deer which in turn, is eaten by tigers. If deer is missing in the food chain, grass will not be eaten by it so, the population of grass will increase whereas tigers will not get their food and its population will decrease.
APPEARS IN
RELATED QUESTIONS
Which of the following are always at the second tropic level of food chains?
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.
"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?
Name one decomposer.
What is the role of decomposers in the ecosystem?
Draw the food chain with four trophic levels.
Write one or two word for the following statement/definition :
Each level of food chain where transfer of energy takes place
What will happen if deer is missing in the food chain given below?
Grass → Deer → Tiger
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?
What is ten per cent law? Explain with an example.
Explain how harmful chemicals enter our bodies.
Your mother always thought that fruit juices are very healthy for everyone. One day she read in the newspaper that some brands of fruit juices in the market have been found to contain certain level of pesticides in them. She got worried as pesticides are injurious to our health.
(a) How would you explain to your mother about fruit juices getting contaminated with pesticides?
(b) It is said that when these harmful pesticides enter our body as well as in the bodies of other organisms they get accumulated and beyond a limit cause harm and damage to our organs. Name the phenomenon and write about it.
Arrange the following in a correct sequence and form a food chain
Human → Insect → Algae → Fish
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. |
A food chain comprising birds, green plants, fish and man. The concentration of harmful chemical entering the food chain will be maximum in ______.
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
