Advertisements
Advertisements
Question
A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y
Which organism in the above food chain is a (1) primary consumer, and (2) tertiary consumer?
Advertisements
Solution
(1) Zooplankton are primary consumers, and (2) big fish are tertiary consumers.
APPEARS IN
RELATED QUESTIONS
"Energy flow in a food chain is unidirectional" Justify this statement.
Give reason to justify the following: The existence of decomposers is essential in a biosphere.
Give reason to justify the following: Flow of energy in a food chain is unidirectional.
In the following food chain, plants provide 500 J of energy to rats. How much energy will be available to hawks from snakes?
Plants → Rats → Snakes → Hawks
The following statement is true or false :
Secondary consumers and tertiary consumers, both are carnivores.
Give an example of a four step food chain operating in grassland. Name the secondary consumer in this food chain
Write down a food chain with five links in it.
What is a 'food web'? Show its formation.
Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called ______.
One of the following is not a consumer. This one is :
(a) giraffe
(b) antelope
(c) algae
(d) alligator
Some hunters are roaming in the plush green forest of Africa. They spot a deer and kill it. They decide to roast the deer there and then and eat it. When the hunters had just finished enjoying the feast of roasted deer, a lion attacks them. The lion kills one of the hunters and eats his flesh.
(a) write a food chain which provides food to lion in this case.
(b) Which animal (other than deer) the lion could look for food if he did not get the hunter as prey?
(c) Which other animal in the forest could have been in place of lion?
(d) How does the above food chain differ form the food chain such as : plants → goat → man?
Which common pesticide has accumulated in human body in considerable amounts?
Most of the water surface of a lake is covered with algae. This algae is part of the food chain which also includes small fish, bird, larvae and big fish. Which of the following will obtain the maximum energy?
(a) big fish
(b) bird
(c) larvae
(d) small fish
The harmful chemical which is accumulating in human beings through food chain is :
(a) benzenehexachloride
(b) dichlorodiphenyltrichloroethane
(c) chlorofluorocarbon
(d) abscisic acid
Arrange the following in a correct sequence and form a food chain
Human → Insect → Algae → Fish
We should reduce the use of the plastic bags, bottles etc. because ______.
______ are organisms that are able to produce their own organic food.
In a food chain, the third trophic level is always occupied by
In the given food chain, suppose the amount of energy at the fourth trophic level is 5 kJ, what will be the energy available at the producer level?
Grass → Grasshopper → Frog → Snake → Hawk
What will happen if deer is missing in the food chain given below?
Grass → Deer → Tiger
