Respiratory Structures in Animals

The video tutorial discusses various respiratory structures across different animal groups, including protozoa, sponges, cnidarians, platyhelminthes, nematodes, annelids, arthropods, echinoderms, and chordates. It explains how these structures facilitate gas exchange, highlighting differences between free-living and parasitic forms, and the role of structures like plasma membranes, body surfaces, gills, trachea, and lungs. The tutorial also covers anaerobic respiration and its occurrence in certain parasitic forms.

Which structure is responsible for gas exchange in protozoa like amoeba?

• Plasma membrane

• Trachea

• Skin

• Gills

In platyhelminthes, how do free-living forms exchange gases?

• Through tracheal tubes

• Using lungs

• Via body surface

• Through gills

What type of respiration occurs in parasitic platyhelminthes?

• Cutaneous respiration

• Aerobic respiration

• Tracheal respiration

• Anaerobic respiration

Which structure is used by annelids like earthworms for respiration?

• Trachea

• Lungs

• Skin

• Gills

In arthropods like prawns, which structure is used for respiration?

• Skin

• Trachea

• Gills

• Lungs

What is the primary respiratory structure in insects?

• Gills

• Skin

• Trachea

• Lungs

Which structure is involved in respiration in echinoderms like starfish?

• Lungs

• Trachea

• Normal branchia

• Pharyngeal wall

In hemichordates, which structure is used for gas exchange?

• Gills

• Skin

• Pharyngeal wall

• Trachea

What respiratory structure is common in amphibians like frogs?

• Trachea

• Lungs

• Buccopharyngeal lining

• Gills

Which respiratory structure is primarily used by mammals?

• Gills

• Trachea

• Lungs

• Skin