Which of the following is not a stage in life cycle of Silk moth?

It is easy to collect the eggs of __________________ animals because they lay the eggs outside their bodies.

Which of the following are a oviparous animals ?

The head of the sperm consists of the nucleus and structure called the _______________  at the tip.

Which of the following is/are the parts of sperm ?

Which of the following are a type of fertilization ?

Which of the following are correct :

(a) The yolk present in egg helps to protect the embryo from damage.

(b) During its development into chick, the embryo gets all its food from the egg albumen.

Which of the following are correct :

(a) The two modes of fertilisation in animals are internal fertilisation, and external fertilisation.

(b) The fertilisation which takes place inside the female body is called internal fertilisation.

Which of the following are correct :

(a) Women who cannot produce babies are called sterile.

(b) In vitro fertilisation' means "in glass fertilisation'.

Which of the following are correct :

(a) Each egg or ovum is a spherical cell much smaller than the sperm.

(b) A sperm has a head, a middle piece and a tail.

(c) Each egg or ovum is a spherical cell much bigger than the sperm.