Which one of the following NOT correctly matched 

List I Hormone	LIst II Secreted by
I. Testosterone	Interstitial cells
II. Prolactin	Adrenal medulla
III. Estrogen	Ovary
IV. Progesterone	Corpus luteum

Which of the following is a social insect

Metabolically inactive cell inclusions remaining in the cytoplasm is called

A feature common to nucleus, chloroplast and mitochondria is the presence of 

Which cytoplasmic organelle is associated with 'acrosome' formation in the spermatozoa of animals

The root nodules of Casuarina which are capable of symbiotic nitrogen fixation contain the microbe