Flatworms and ribbonworms have
bilateral symmetry
organ level of organization
presence of mesoderm
all of these
Alimentary canal is not found in
apoda
cestoda
gastropoda
arachnida
'Venus flower basket' is the name of the dried skeleton of
Euspongia
Euplectella
Spongilla
Leucosolenia
Choanocytes is an ascon type of canal system, which is lined by
porocyte
incurrent
apopyle
spongocoel
Which of the following phylum includes largest number of species?
protozoa
annelida
arthropoda
platyhelminthes
Choanocytes perform
excretion
nutrition
reproduction
secretion of spicules
Which of the following pairs is correctly matched?
uricotelism - aquatic habitat
parasitism - intra-specific relationship
streamlined body - aquatic adaptation
excessive perspiration - xeric adaptation
Which of the following are lowest 'multicellular grade' organisms?
sponges
coelenterates
prokaryotes
monerans
Butterflies belong to the order
diptera
coleoptera
lepidoptera
hymenoptera
Radial symmetry is, usually, exhibited in animals which
live in water
have ciliary mode of feeding
are attached to the substratum
have one opening of alimentary canal
