Filter Feeders

question 148

Multiple Choice

Filter feeders

• A) include sponges.
• B) generally capture large prey.
• C) are all diploblastic organisms.
• D) are all mobile.
• E) are all sessile.

---

Definitions:

Endoderm Layer

The innermost layer of cells or tissues in an embryo that gives rise to the lining of the gastrointestinal tract and associated organs.

Fertilization Cone

A cellular structure that extends from a sperm to penetrate and fertilize an egg cell.

Egg Membrane

The protective outer layer surrounding an egg cell, which can include structures like the chorion in birds or the zona pellucida in mammals.

Early Gastrula

A stage in embryonic development following blastula, characterized by the formation of the primitive gut and the establishment of germ layers.