1-Explain six of the following terms with reference to the Mollusca. In your answer be as...

80.2K

Verified Solution

Question

Biology

1-Explain six of the following terms with reference to theMollusca. In your answer be as comprehensive as possible regardingeach term and use illustrations. a) mantle cavity, b) radula c)ctenidia, d) Monoplacophora, e) trochophore, f) pulmonategastropod, and g) torsion.
2-Describe how the gnathostomes developed a jaw, and discuss howthis adaption has benefitted later chordate species.

Answer & Explanation Solved by verified expert

4.4 Ratings (1111 Votes)

1 Phylum Molluscs has many examples such as octopus clams squids snails etc The molluscs are soft from the inside but on the outside they have a hard shell or exoskeleton a Mantle Cavity Mantle is a soft tissue just beneath the hard shell of the animal body and it covers the body of the animal The mantle also secreted sodium bicarbonate which helps in the formation of the hard shell It is one of the main function of the mantle The other function is that the mantle forms a cavity which is also known as the mantle cavity This cavity lies between the animal body and the mantle tissue Mantle cavity acts as a water pumping station for the aquatic molluscs Mantle cavity has all the organs in it such as gills reproductive digestive and excretory systems The water enters the mantle cavity which helps in the absorption of oxygen through gills The excretory system helps in the removal of waste Excretory pores are released into the mantle cavity which is then pumped out of the body of the animal In some animals such as See Answer

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member