Answer the following
(i) What is the function of nephridia?
(ii) How many types of nephridia are found in earthworm based on their location ?

How many spermathecae are found in earthworm ?

How many types of sperms are found in man? a.One b.Two c.Three d.Four

Location and Functions : Nephridia :

Answer in one word or one line. (i) Give the common name of Periplaneta americana. (ii) How many spermathecae are found in earthworm? (iii) What is the position of ovaries in the cockroach? (iv) How many segments are present in the abdomen of cockroach? (v) Where do you find malphigian tubules?

Answer the following: (i) How many dimensions a solid has? (ii) How many books are there in Euclid's Elements? (iii) Write the numbers of faces of a cube and cuboid? (iv) What is sum of interior angles of a triangle? (v) Write three un-defined terms of geometry?