Polyp phase is absent in
Hydra
Aurelia
Physalia
Obelia
B.
Aurelia
Polyp and medusa are the asexual and sexual phases present respectively in coleoptiles.
Aurelia (jelly fish) belongs to Class- Scyphozoa, in which medusoid phase is dominant and polypoid phase is absent.
Hydra, Obelia, Physalia are the members of Class- Hydrozoa, in which, medusoid and polypoid both phases are present.
Metridium, Tubiporia etc are the members of Class- Anthozoa, with only polyps.
In Whittaker's system of classification, prokaryotes belong to the kingdom
Monera
Protista
Animalia
Fungi
Entamoeba histolytica differs from Amoeba in absence of
pseudopodia
contractile vacuole
nucleus
ectoplasm
Contractile vacuole in protozoan Amoeba is meant for
respiration
excretion
locomotion
osmoregulation
Which part of an animal virus is not reproduced in multiple copies?
Capsid
Protein
Envelope
Ribosome
The process which cannot take place in the absence of viruses is
transformation
conjugation
translocation
transduction
