Animal KingdomHard
Question
Earthworms are
Options
A.useful
B.harmful
C.more useful than harmful
D.more harmful
Solution
Earthworms are friends of farmers because they enrich the soil by nephridial excretion, it increases the fertility of soil. They also help in ploughing of fields, make the soil porous. Earth worms are also used for dissection in laboratories.
Create a free account to view solution
View Solution FreeMore Animal Kingdom Questions
Which of the following is an egg-laying mammal?...What is true about birds?...Lamina propeia is connected with...Which one of the following groups of animals is bilaterally symmetrical and triploblastic ?...The increase in complexity of the vertebrate circulatory system is represented by which of the following combinations ?...