n molluscs, mantle cavity is the space betweenA     mantle and shellB     mantle and visceral humpC     visceral hump and footD     body wall and gut

Break Down the Problem

1. Identify what the mantle cavity is in the context of molluscs.
2. Define the parts of the molluscan body mentioned in the options.

Relevant Concepts

• The mantle is a significant part of the molluscan anatomy, responsible for secreting the shell (if present) and forming the mantle cavity.
• The visceral hump contains the internal organs.
• The foot is used for locomotion and is typically muscular.

Analysis and Detail

• Option A (mantle and shell): The mantle cavity is not located between the mantle and shell, as it is more of an area for gas exchange and waste disposal.
• Option B (mantle and visceral hump): This option is a strong candidate because the mantle cavity is indeed situated here.
• Option C (visceral hump and foot): This does not correctly describe the mantle cavity's location.
• Option D (body wall and gut): This option is also incorrect, as the cavity is not located there.

Verify and Summarize

Upon analyzing all options, the most accurate description of the mantle cavity's location is between the mantle and the visceral hump.

Final Answer

The mantle cavity in molluscs is the space between B. mantle and visceral hump.