Question

Difference between septal gill and opercular gill bengali

Answer 1

septal gills are more primitive.
opercular gills are not primitive.
septal contain 5pairs of pouch of gills.
opercular gills contain 4pairs of pouch of gills.

Answer 2

Answer:

Explanation:

Septal gill:

The gill septum of the hyoid arch is considerably changed in bony fishes to produce a single, moveable, bony covering for the whole gill chamber the operculum. Individual gill septa are destroyed, and the posterior branchial muscles have undergone significant change, with many of the features discovered.

• Branchial pouches are tiny chambers with external gill openings that exist between the branchial chambers.
• External gill slits are slit-shaped and tiny.

• The distal ends of the inter branchial septa can function as valves, closing the external gill slits.

• Gill lamellae extend from the inter branchial septa to the body surface. Internal gill slits extend from the throat into each branchial chamber.

Opercular gill:

Bony fish have an operculum as well. The operculum is a bony flap of skin that covers the gills and protects them. It opens and shuts to allow bony fish to breathe when not swimming. Bony fish have scales, and the majority of species have a fusiform body shape.

• Operculum covers the gills.
• There is a single big opercula chamber with one valved external gill slit.
• Inter branchial septa are substantially reduced.
• As a result, gill lamellae expand freely into the opercula chamber.

#SPJ2