1. Moves away from strong light
2. Prefers weak illumination
3. Moves to water of low temperature
4. Avoids chlorinated water.
Avoids chlorinated water.
1. Isotonic
2. Hypotonic
3. Hypertonic
4. None of the above
Hypertonic
1. Parthenogenesis
2. Budding
3. Sexual
4. Sporogony.
Sexual
1. Always open
2. Never open
3. Open during night and close at night
4. Open during night and close during the day
Open during night and close during the day
1. Receptor ogan in Ascaris
2. a part of scolex
3. protective covering of Amoeba
4. a receptor organ of Aurelia.
a receptor organ of Aurelia.
1. Hydra
2. Fungia
3. Metridium
4. Obelia.
Obelia.
1. penetrants are larger
2. penetrants are smaller
3. stenoteles are not found in Hydra
4. Both are same.
Both are same.
1. very near the shore
2. in deep sea
3. in cold sea
4. far away from the shore.
very near the shore
1. Hydroidea
2. Pennatulacea
3. Madreporaria
4. Alcyonacea.
Madreporaria
1. Gorgonia
2. Pennatula
3. Fungia
4. Corallium
Pennatula