A. It does not produce waste material
B. Due to absence of mesoderm
C. The whole body cells are in contact with water
D. It has pseudocoelom.
Related Mcqs:
- The food of hydra consists of___________?
A. Humus
B. Detritus
C. Dead microscopic animals
D. Small crustaceans - Hydra is an example of ______________ feeder?
A. Fluid
B. Macrophagous
C. Fluid
D. All of these - Hydra has___________?
A. Brain
B. Nerves
C. Neuron-cells
D. All of these - Excretory system of platyhlminthes consists of___________?
A. Nephridia
B. Flame cells
C. Malpighian tubules
D. Nephrons - Which excretory product in produced in plants during autotrophic mode of life?
A. CO2
B. H2O
C. O2
D. Both A and B - Which of the following excretory structure is associated with gut of the organism?
A. Protonephridium
B. Metanephridium
C. Malpighian tubules
D. Nephrons - Which of the following is a sentimentally arranged excretory system?
A. Protonephridium
B. Metanephridium
C. Malpighian tubules
D. Nephrons - Complex specialized flagellates living symbiotically in the gut of termites are___________?
A. Trichonymphas
B. Trypanosoma
C. Euglena
D. Radiolarians - Specialized protective coverings around megasporangium which vary in number are called_________________?
A. Sporangium
B. Integuments
C. Ovule
D. Pericarp - Brown fat present in certain mammals is specialized in___________?
A. Providing insulation in cold environment.
B. Providing insulation in hot environment
C. Rapid heat production.
D. Controlling heat production.
