Advertisements
Advertisements
प्रश्न
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
Name one phytoplankton.
Advertisements
उत्तर
Algae are phytoplankton.
APPEARS IN
संबंधित प्रश्न
What will happen if we kill all the organisms in one trophic level?
What name has been given to those organisms which break down the complex organic compounds present in dead animals and plants?
Which of the following belong to the same trophic level?
Goat ; Spider ; Plants ; Hawk ; Rat
Write down a food chain with five links in it.
At which trophic level a person is feeding when he is eating roasted chicken.
At which trophic level a person is feeding when he is eating fish.
Write a common food chain of a pond ecosystem having four links.
In the food chain comprising of a snake, grass, insect, and frog, the secondary consumer is :
(a) insect
(b) snake
(c) frog
(d) grass
The sea water contains water beetles, tadpole, fish and weeds.
Which organisms can trap solar energy to make food?
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?
Which common pesticide has accumulated in human body in considerable amounts?
How much energy will be available to hawks in the food chain comprising hawk, snake, paddy and mice, if 10,000 J of energy is available to paddy from the sun?
The harmful chemical which is accumulating in human beings through food chain is :
(a) benzenehexachloride
(b) dichlorodiphenyltrichloroethane
(c) chlorofluorocarbon
(d) abscisic acid
"Energy flow in food chains is always unidirectional". Justify this statement. Explain how the pesticides enter a food chain and subsequently get into our body.
Arrange the following in a correct sequence and form a food chain
Human → Insect → Algae → Fish
Green plants utilize ______ percent of sun’s energy to prepare their food by the process of photosynthesis.
Food chains are very important for the survival of most species.

Matter and energy are two fundamental inputs of an ecosystem. Movement of:
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
Use of several pesticides which results in excessive accumulation of pesticides in rivers of ponds, is a matter of deep concern. Justify this statement.
