Question

1. Human body is made up of five important components of w
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 biodegradable, 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
(a) Why is the maximum concentration of pesticides found in human
and body.
beings?
(b) Give one method which could be applies to reduce our intake of
pesticides through food to some extent.
(c) Various steps in a food chain represent:
(i) food web (ii) trophic level (ii) ecosystem (iv) biomagnifications
(d) With regard to various food chains operating in an ecosystem, man
is a:
(i) consumer (ii) producer (iii) producer & consumer (iv) producer
& decomposer​

Answer 1

Answer:

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Answer 2

Answer:

(a) pesticides are non-biodegradable so it accumulates at each trophic level. Humans are the tertiary consumers. They are the last trophic level so maximum concentration of pesticides are found in human body.

(b) we can use organic food items which uses organic biodegradable manure.

(c) (ii) tropic level.

(d) (i) consumer.