English

What is a Food Chain? - Science

Advertisements
Advertisements

Question

What is a food chain?

Solution

The sequence of living organisms in a community in which one organism consumes another organism to transfer food energy is called a food chain. An example of a simple food chain is that operating in a grassland.

shaalaa.com
  Is there an error in this question or solution?
Chapter 5: Our Environment - Exercise 1 [Page 228]

APPEARS IN

Lakhmir Singh Biology (Science) [English] Class 10
Chapter 5 Our Environment
Exercise 1 | Q 44.1 | Page 228

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

Which of the following are always at the second tropic level of food chains?


Give reason to justify the following: The existence of decomposers is essential in a biosphere.


Consider the food chain :
Grass → Deer → Lion
What will happen if all the lions are removed from the above food chain?


At which trophic level a person is feeding when he is eating apple.


Construct a short foodchain, ending with man.


Calculate the amount of energy that will be available to big fish in the following food chain, if 10,000 J of energy is available to small algae from the sun :
Small algae → Zooplankton → Fish → Big fish


In addition to wheat plants, a crop field ecosystem has organisms such as snake, peacock, eagle and mice. If the wheat plants are sprayed with pesticides periodically, which of the following will have the minimum concentration of pesticides in the body?
(a) snake
(b) eagle
(c) mice
(d) peacock


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


Arrange the following in a correct sequence and form a food chain

Human → Insect → Algae → Fish


Accumulation of non-biodegradable pesticides in the food chain in increasing amount at each higher trophic level is known as


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×