Question

1.Why are all sponges regardless of size limited to feed on microscopic food particles.
2.Why are some Bryophytes called liverworts
3.Why spirogyra is given its name

Answer 1

1. Sponges, regardless of size limited to feed on microscopic food particles because of their cellular level of organization. Sponges are marine,asymmetric animals having water transport or canal system .
2.Some bryophytes are called as liverworts because their gametophyte resembles with liver lobes.
3.Spirogyra is a genus of green algae that belong to the orderZygnematales. These free-flowing, filamentous algae are characterized by ribbon-shaped chloroplasts that are arranged in a helical manner inside the cells. So the name is derived from the spiral arrangement of chloroplasts in these algae.