1. Presence of oxygen
2. Low CO2 concentration
3. High CO2
4. CO2 absent
Low CO2 concentration
1. Temperature
2. Temperature and metabolic inhibitor
3. Temperature inhibitor
4. Humidity
Humidity
1. Planaria
2. Obelia
3. Earthworm
4. Pila.
Obelia
1. O.P
2. S.P
3. T.P
4. W.P
O.P
1. Catching prey
2. Paralysing prey
3. Tasting the food
4. Tasting the water around
Paralysing prey
1. Nerium
2. Hydrilla
3. Mango
4. Guava
Nerium
1. Relaxation of myonemes of epitheliomuscular cells
2. Relaxation of myonemes of gastromuscular cells
3. By the pressure generated by the body fluid
4. None of the above
Relaxation of myonemes of epitheliomuscular cells
1. Ectoderm, mesoderm and endoderm
2. Ectoderm, mesenchyme and endoderm
3. Ectoderm and endoderm
4. Epidermis, mesogloea and gastrodermis.
Epidermis, mesogloea and gastrodermis.
1. Germ cells
2. Cnidoblasts
3. Interstitial cells
4. Muscular cells.
Interstitial cells
1. Intercellular
2. Extracellular
3. Intracellular
4. Both extracellular and intracellular
Both extracellular and intracellular