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
The compounds formed when hydrogen combines with p-block elements are called
Ozone layer of atmosphere absorbs