Biology · Kingdom Animalia
Work through this past-paper style MCQ, then read the full explanation. Practice more biology questions on mMCQ with adaptive practice and topic analytics.
Pinacocytes forms ______.
- A
Pores
- B
Ostia
- C
Epidermis
- D
Spongocoel
Options A: Pores are small openings in the epidermis that allow water to enter the sponge. Option B: Ostia are larger openings in the epidermis that also allow water to enter the sponge. Option C: Epidermis is the outer layer of cells in a sponge. It is made up of flat, plate-like cells called pinacocytes. Pinacocytes are responsible for protecting the sponge from the environment and allowing water to enter the sponge through pores. Option D: Spongocoel is the central cavity of the sponge. It is lined with choanocytes, which are cells that have flagella that create currents that draw water into the sponge.
Pores are small openings in the epidermis that allow water to enter the sponge.
Ostia are larger openings in the epidermis that also allow water to enter the sponge.
Epidermis is the outer layer of cells in a sponge. It is made up of flat, plate-like cells called pinacocytes. Pinacocytes are responsible for protecting the sponge from the environment and allowing water to enter the sponge through pores.
Spongocoel is the central cavity of the sponge. It is lined with choanocytes, which are cells that have flagella that create currents that draw water into the sponge.
Tagged under Biology · Kingdom Animalia · 2018