A.Negative responses to both
B.Positive response to both
C.Positive response to weak light and negative to bright one
D.Negative response to weak light and positive response to bright light
A.Extoderm and mesoderm
B.Ectoderm and endoderm
C.Endoderm and mesoderm
D.Ectoderm, endoderm and mesogloea
A.Planula
B.Amphiblastula
C.Scyphistoma
D.Miracidium
A.Polymorphism
B.Polygynae
C.Polyandry
D.None of these
A.Hydrocoel
B.Homocoel
C.Coelom
D.Coelenteron
A.Gastrozooids through asexual reproduction
B.Blastostyles through asexual reproduction
C.Both through sexual reproduction
D.None of these processes
A.Fishes
B.Small crustaceans
C.Aglae
D.Crabs
A.Platyhelminths
B.Cnidarians
C.Annelids
D.Molluscs
A.Hydra
B.Amoeba
C.Cockroach
D.Earthworm
A.Acidic medium
B.Alkaline medium
C.Neutral medium
D.First acidic and then alkaline medium
