Question

Marine protozoans lack contractile vacuole because [DPMT 2001]
A) Their body cannot accommodate it
B) They are hypo osmotic to their environment
C) They are isotonic with their environment
D) Osmoregulation is done by cell membrane

Answer 1

Marine protozoans lack contractile vacuole because
B) They are hypo osmotic to their environment

Answer 2

hiii,

option B

hope helps