Download HSEB Notes of Zoology | Detailed Study of Earthworm | Biology

BIOLOGY | ZOOLOGY
UNIT SIX : DETAILED STUDY OF EARTHWORM
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It is found in soil, which is rich n humus. It is found abundantly in rainy season. Other days it is found in soil. The earthworm is usually active at night and so called nocturnal. They feed on soil; digest organic matters and undigested matter are excreted out called castings. The earthworm plough soil, makes soil fertile, and so called farmers friend.

Don't forget to download Notes on following topic :

• UNIT TWO : ORIGIN AND EVOLUTION OF LIFE
• UNIT FOUR : KINGDOM PROTISTA 
• UNIT SEVEN : DETAILED STUDY OF FROG
• UNIT EIGHT : ENVIRONMENTAL POLLUTION
• UNIT NINE : ANIMAL BEHAVIOUR
• UNIT TEN : CONSERVATION OF WILDLIFE RESOURCES