Question

how do sponges defend themselves? be able to tell the difference between the 3 types of sponges
spicules
spongin
types of reproduction - asexual and sexual
monoecious -
gemmules -
the importance of surface area: surface area = filtering/food
label sponge diagram
why sponges are important in terms of evolution:

Explanation:

Sponges defend themselves using spicules (sharp, hard structures), toxins (chemical deterrents), and symbiotic relationships. The three types of sponges are asconoid, syconoid, and leuconoid, differing in canal - system complexity. Spicules are structural elements, while spongin is a flexible protein - like material. Sponges reproduce asexually (e.g., by budding, gemmules) and sexually (monoecious in some cases). A larger surface area is important for filtering food. Sponges are evolutionarily important as they are among the earliest multicellular animals, providing insights into early animal evolution.

Answer:

• Sponges defend with spicules, toxins, symbiosis.
• Three types: asconoid, syconoid, leuconoid.
• Spicules are hard structures, spongin is flexible material.
• Asexual and sexual reproduction; monoecious and gemmules involved.
• Larger surface area for better filtering.
• Important in evolution as early multicellular animals.