1. Clypester
2. Antedon
3. Sea cucumber
4. Echinus
Sea cucumber
1. ectoderm
2. mesoderm
3. endoderm
4. None of above
mesoderm
1. blood
2. coelomic fluid
3. mucus
4. water
water
1. Gut
2. Nervous system
3. Heart
4. Coelom
Coelom
1. Parapodia
2. Pseudopodia
3. Tube Feet
4. Setae
Tube Feet
1. Enterocoelous in origin
2. Filled with coelomic fluid
3. Provided with coelomocytes
4. All the above
All the above
1. Lack an alimentary canal
2. Have a straight or coiled alimentary canal
3. Have a poorly developed alimentary canal
4. Have an alimentary canal
Have a poorly developed alimentary canal
1. retrovirus
2. influenza virus
3. bacteriophage
4. vaccinia virus
bacteriophage
1. HIV virus
2. influenza virus
3. vaccinia virus
4. All of these
HIV virus
1. tobacco mosaic virus
2. cauliflower mosaic virus
3. potato mosaic virus
4. Both (b) and (c)
cauliflower mosaic virus