Basic knowledge

Which hormone releases emotional state:-
(a) Endorphins
(b) Dopamine
(c) Serotonin and Oxytocin
(d) All

The roots that originate from the base of the stem are:-
(a) Primary roots
(b) Prop roots
(c) Lateral roots
(d) Fibrous roots

Which of the following disease are caused due to a virus:-
(a) Corona
(b) SARS
(c) AIDS
(d) All above these

What is the amount of blood contains in the human body-
(a) 5-6litres
(b) 6-7litres
(d) 8 litres
(e) None