मराठी

Which of the Following Represents a Possible Food Chain Found in a Pond :Primary Producers Primary Consumers Secondary Consumers Green Algae Fish Mosquito Larvae - Science

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प्रश्न

Which of the following represents a possible food chain found in a pond :

Primary
producers
Primary consumers Secondary
consumers
(a) green algae fish mosquito larvae
(b) fish green algae mosquito larvae
(c) mosquito larvae fish green algae
(d) green algae mosquito larvae fish

 

उत्तर

green algae, mosquito larvae, fish
In a pond, green algae are the primary producers. Green algae are consumed by mosquito larvae, which therefore become the primary consumers. Mosquito larvae are consumed by fish, which then become the secondary consumers.

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पाठ 5: Our Environment - Exercise 1 [पृष्ठ २२८]

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लखमीर सिंह Biology (Science) [English] Class 10
पाठ 5 Our Environment
Exercise 1 | Q 48 | पृष्ठ २२८

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संबंधित प्रश्‍न

In a food chain of frog, grass, insect and snake, assign trophic level to frog.


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 eggs.


If a grasshopper is eaten by a frog, then the energy transfer will be from ______.


The following is a food chain that ends with human :
plants → bee → human

How do bees provide food for humans?


Write the percentage of energy transferred from autotrophs to the next level in a food chain.


The ten per cent law is associated with
(a) transfer of energy from various trophic levels to decomposers in a food chain
(b) transfer of ATP energy into muscular energy
(c) transfer of chemical energy from one organism to another
(d) transfer of sun's energy to the organisms called producers.


Answer the following question.
Human body is made up of five important components, of which water is the main component. Food, as well as potable water, are essential for every human being. The food is obtained from plants through agriculture.  Pesticides are being used extensively for a high yield in the fields. These pesticides are absorbed by the plants from the soil along with water and minerals and from the water bodies, these pesticides are taken up by the aquatic animals and plants. As these chemicals are not biodegradables, they get accumulated progressively at each trophic level. The maximum concentration of these chemicals gets accumulated in our bodies and greatly affects the health of our mind and body.

(a) Why is the maximum concentration of pesticides found in human beings?

(b) Give one method which could be applied to reduce our intake of pesticides through food to some extent.

(c) Various steps in a food chain represent :
(a) Food web
(b) Trophic level
(c) Ecosystem
(d) Biomagnification

(d) With regard to various food chains operating in an ecosystem, man is a:
(a) Consumer
(b) Producer
(c) Producer and consumer
(d) Producer and decomposer


Which of the following is an autotroph?


Observe the food web and answer the questions given below:

Why do all food chains start with plants?


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