Unit 3 Porifera Flashcard

Front

What class do sponges with 6-rayed spicules made of silica belong to?

Back

Hexactinellida

Front

What does it mean for sponges to be diploblastic?

Back

It means that only two germ layers (endoderm and ectoderm) develop during embryonic development.

Front

What class does a hard, spiky freshwater sponge belong to?

Back

Demospongiae

Front

What percentage of all sponge species are included in the Demospongiae class?

Back

95%.

Front

What are the main components of spicules in the Demospongiae class?

Back

Silica and/or spongin.

Front

What is the defining characteristic of the class Calcarea?

Back

They have spicules made of calcium carbonate.

Front

What type of environment do Homoscleromorpha sponges typically inhabit?

Back

They are often found in marine environments.

Front

What is the significance of spicules in sponges?

Back

Spicules provide structural support and deter predators.

Front

How do sponges reproduce?

Back

Sponges can reproduce both sexually and asexually.

Tags

NGSS.MS-LS3-2

Front

What is the role of choanocytes in sponges?

Back

Choanocytes help in feeding and water circulation.

Tags

NGSS.MS-LS1-2