Division of labour in multicellular animals means:
A.All functions by a single cell
B.A single function performed by various cells jointly
C.Different functions by different cell types
D.Similar functions by different types of cells
Category: Phylum Cnidaria or Coelentrata Mcqs
An association mutually beneficial to both partners is represented by:
A.Men and honey bee
B.Zoochlorellae and Hydra
C.Hydra and water fleas
D.Farmer and earthworm
Hydra is:
A.Marine, diploblastic and radially symmetrical
B.Fresh water, diploblastic and radially symmetrical
C.Marine, riploblastic and bilaterally symmetrical
D.Fresh water, triploblastic and radially
Interstitial cells in Hydra form:
A.Nematocysts
B.Sex cells
C.Both (a) & (b)
D.None of these
Hydra possesses:
A.Sensory cells but no nerve cells
B.Both sensory and nerve cells
C.Neither sensory nor nerve cells
D.Nerve cells but no sensory cells
Most primitive nervous system is found In:
A.Hydra
B.Amoeba
C.Spong
D.Earthworm
Cnidarians are characterized by presence of:
A.Nematocysts
B.Gartovascular cavity
C.Both (a) & (b)
D.None of these
Which of these in Hydra will be most hindered if there were no nematocyst:
A.Ingestion
B.Food capture
C.Locomotion
D.Digestion
In blastostyles the perisarc forms:
A.Hydrotheca
B.Gonotheca
C.Blastotheca
D.None of these
Tentacles of Hydra help in:
A.Food capture
B.Locomotion
C.Both (a) & (b)
D.None of these
