Question

State 3 difference between the following
1. Invertebrates and vertebrates
2. Spongocoel and coelenteron
3. Platyhelminthes and nematodes
4. Nematodes and annelids​

Answer 1

Answer:

Difference between vertebrates and invertebrates are

Vertebrates

1. Animals that have a backbone is called a vertebrate

Invertebrates

1.animals which didn't have a backbone is called invertebrates

Explanation:

Answer 2

1. Coelenteron:
2. 1. In 1 Cnidarian, the body encloses coelenteron cavity, hence the name Coelenterata is given to this phylum.
3. 2. Coelenterons has only one aperture mouth. The anus is absent, coelenteron is lined by gastrodermis. e.g., Hydra, Aurelia, Physalia, Adamsia, Pennatuta etc.
4. Spongocoel:
5. 1. In 1 sponge, the body wall enclosed a large cavity called spongocoel.
6. 2. Spongocoel is lined by flagellated choanocytes. Water current enters through dermal Ostia (pores) and after going through spongocoel, water goes out by osculum. e.g., sponges like Scypha, Euplectella, Leucosolenia.