Which organ does detoxification and produces chemicals needed for digestion?

RNA is a polymeric molecule. What does RNA stand for?

All of the following are excretory (waste) products of animals, except

Which of the following is not true about Angiosperms?

Kidney stones are composed of ______. 

Xerophthalmia is caused due to the deficiency of vitamin ________.

In biological terms, _______ is a relationship between two organisms in which one organism benefits and the other is unaffected.

Red worms have a structure named ______ which helps them in grinding their food.