Question

procedure
1 obtain a preserved specimen of metridium that has been bisected longitudinally.
2 examine this specimen and locate the following structures depicted in figures 8.15 - 8.17 (anatomy defined in table: tentacles, oral disc, mouth, ostium, pharynx, retractor muscles, gonad, gastrovascular cavity, primary septum, seco - septum, pedal disc, and acontia.
3 notice that the large gastrovascular cavity of your specimen is partitioned by primary septa, inward extensions of the body wall. openings in these septa, called ostia, allow water to circulate throughout the body. smaller, seconda - septa (or incomplete septa) further subdivide the main chambers. what do you suppose is the function or purpo - of these folds of the gastrovascular cavity wall (the septa)?
4 count the number of primary septa on your specimen and record that value in the space provided. compare your finding with other lab groups. do all of the sea anemone specimens in your lab have the same number of primary s -
8.15 external anatomy of the sea anemone, metridium.
8.16 internal anatomy of the sea anemone, metridium.

Explanation:

The question is about hypothesizing the function of the septa in the gastrovascular cavity of a sea - anemone (Metridium) based on the given anatomical information. Septa in the gastrovascular cavity likely increase the surface area for digestion and gas exchange, which are important life - sustaining processes in sea anemones.

Answer:

The septa in the gastrovascular cavity of the sea anemone likely increase the surface area for digestion and gas exchange.