Protostomes

Question 1

What is a “Protostome”?

Answer 1

Protostomes are a group of animals where the initial opening in the embryo develops into the mouth.
Ex: Snails, worms, bugs

Question 2

What are the two types of Protostomes?

Answer 2

Lophotrochozoa- grow by added tissue.
Ecdysoza- grow by molting

Question 3

Lophotrochozoa

Answer 3

Trochophore-free-living larva

Lophoohore- A ring of ciliated tentacles encircles the mouth, which is employed for filter-feeding.

Question 4

What is another word for filter-feeding animals?

Answer 4

Detritovores

Question 5

What is the main thing to know about Ecdysozoas?

Answer 5

Exoskeleton
They molt to grow
2 groups: Arthropods and Nematodes.

Question 6

Most important of Flatworms?

Answer 6

Eyespot, which detects sunlight.

They intake oxygen from water source.

Free-living (Throchopore)

Marine and freshwater

3 systems:
Excretory (Intestine) Nervous (Nerve cord, Gangloin)
Reproductive (Ovary, Testis)

Question 7

What is a Ganglion?

Answer 7

Collection of cell bodies.

Question 8

Trematoda are also called…

Answer 8

Flukes

Question 9

What does proglottis refer to?

Answer 9

The segments of a tapewom’s body.

Question 10

What does pseudocoelomates means?

Answer 10

Body cavity is in between the mesoderm and the endoderm.