Question

Mesoglea of sponges consists of

• A. Gelatinous matrix
• B. Fibres
• C. Spicules
• D. All the above

Answer 1

The correct option is D All the above

The body wall of sponge consists of two layers, outer layer pinacoderm and inner layer choanoderm, with non-cellular mesenchyme in between. Mesenchyme is also known as mesophyl or mesoglea. It is the interconnecting proteinaceous gelatinous matrix. Amoebocytes of various types such as archaeocytes, myocytes, chromocytes, thesocytes etc., are found moving in between the layers.

Mesoglea is composed of various components such as collagen fibres, spicules and many other types of cells.

So, the correct answer is 'All the above'.