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In the Food Chain Comprising of a Snake, Grass, Insect, and Frog, the Secondary Consumer is : (A) Insect (B) Snake (C) Frog (D) Grass - Science

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प्रश्न

In the food chain comprising of a snake, grass, insect, and frog, the secondary consumer is :
(a) insect
(b) snake
(c) frog
(d) grass

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उत्तर

frog
The grass is eaten by the insect, which is eaten by the frog, which is eaten by the snake. Hence, the grass is the producer, the insect is the primary consumer, the frog is the secondary consumer and the snake is the tertiary consumer.

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अध्याय 5: Our Environment - Exercise 1 [पृष्ठ २२९]

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लखमीर सिंग Biology (Science) [English] Class 10
अध्याय 5 Our Environment
Exercise 1 | Q 72 | पृष्ठ २२९

वीडियो ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्न

State with reason any two possible consequences of elimination of decomposers from the Earth.


Which of the following belong to the same trophic level?
Tree ; Frog ; Snake ; Grass ; Lizard

 

What is a trophic level?


Which of the following are decomposers of dead organisms?

Bacteria Fungi Viruses
(a) no yes yes
(b) yes no yes
(c) yes yes  no
(d) yes yes yes

Organisms which synthesise carbohydrates from inorganic compounds by using radiant energy are called ______.


The sea water contains water beetles, tadpole, fish and weeds.

Which organisms are (i) predators, and (ii) prey?


A food chain occurring in the sea which provides food for many people can be written as :
phytoplankton → zooplankton → X → Y

Name the organism which Y could be.


What would happen to the number of rabbits and grass plants if the number of foxes increased?


What would happen to the number of rabbits and grass plants if the number of foxes decreased?


What would happen to the number of grass plants and foxes if the number of rabbits decreased?


 With the help of a food chain, explain how biological magnification of harmful chemicals can occur.


Explain why, the flow of energy in the ecosystem is said to be unidirectional.


A food chain comprises of cat, seed-eating bird, plants, and dog. The organism which will have the maximum concentration of harmful pesticides coming through the food chain is most likely to be :
(a) cat
(b) plants
(c) dog
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If the energy available at the producer level in a food chain is 150 J, how much energy will be transferred to : tertiary consumer?
(a) 15 J
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Write the food chain comprising all the organisms mentioned above.


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.


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Human → Insect → Algae → Fish


We should reduce the use of the plastic bags, bottles etc. because ______.


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.


Use of several pesticides which results in excessive accumulation of pesticides in rivers of ponds, is a matter of deep concern. Justify this statement. 


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