Question

write any five differences between polyps and medusae.​

Answer 1

Answer:

Polyp are sessile while medusa are mobile. Polyp present a tubular shape with the mouth facing the water upwards,while medusa present a bell shape with the mouth facing the water downwards. Polyp do not have a manubrium, while medusa of the class Hydrozoa present a tube hanging down from the bell known as manubrium.

Difference between Polyps and Medusae. Cnidarians have two types of body forms, viz., polyp and medusa. The polyp is cylindrical and usually fixed. ... The medusa is umbrella like and usually free swimming.

Some polyps (e.g. Hydra) are single; others (e.g. the corals and Obelia) form colonies. Polyps typically reproduce asexually by budding to form either new polyps or medusae. The latter reproduce sexually giving rise to new polyps. Sea anemones are solitary polyps that reproduce sexually to form new polyps.

Answer 2

Answer:

Polyps:

• polyps is fixed from of Obelia.
• Polyps is cylindrical in shape.
• Sense organ are absent.
• Polyps are without gonads.
• Polyps belongs to asexual Generation.

Medusae:

• Medusae is a free swimming organism.
• Found in open water.
• Reproduces sexually by gametes.
• Velum is present.
• Longer than Hydra.