Which of the following are lowest 'multicellular grade' organisms?
sponges
coelenterates
prokaryotes
monerans
Which of the following is not diploblastic?
porifera
cnideria
nematoda
ctenophora
Which of the following is correct?
mollusca-bivalvia-pila
annelida-hirudinea-silver fish
mollusca-cephalopoda-octopus
arthropoda-arachinida-grasshopper
The formation of canal system in sponges is due to
reproduction
porous walls
folding of inner walls
gastro-vascular system
Which of the following makes sponges different from metazoan?
diploblastic
sedentary
choanocytes
acoelomate
The scientist who suggested that in about 45 days the older cells of Hydra are replaced by new cells was
Brien
Trembly
Spemann
Linnaeus
Which of the following pairs is correctly matched?
uricotelism - aquatic habitat
parasitism - intra-specific relationship
streamlined body - aquatic adaptation
excessive perspiration - xeric adaptation
Animals with radial symmetry in adult and bilateral symmetry in larva are
annelids
echinoderms
platyhelminthes
Contractile vacuole is absent in
sporozoa
sarcodina
flagellata
ciliata
The metazoans, without tissue grade of organisation, are called
parazoa
protozoa
eumetazoa
deuterostemia
