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Marine Bio > Sponges > Flashcards

Sponges Flashcards

0
Q

Sponges are in what kingdom and phylum?

A

Kingdom Animalia Pylum Porifera

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1
Q

What did early biologists think sponges were?

A

Plants

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2
Q

Sponges are multi or uni cellular

A

Multicellular

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3
Q

Are sponges prokaryotes or eukaryotes?

A

Eukaryotes

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4
Q

What are the two body layers of sponges?

A

Epidermis(outer layer)

Gastrodermis(inner layer)

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5
Q

What type of symmetry do sponges have?

A

Asymmetrical

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6
Q

Why are adult sponges sessile?

A

The are attached to some surface

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7
Q

What do sponges eat?

A

Small bits of food, bacteria, algae, or protozoans

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8
Q

How do sponges get their food?

A

Filtering

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9
Q

How does water enter a sponge?

A

They rotate the flagella in a circular motion this sucks water into the sponge

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10
Q

What is the job of the amebocyte?

A

Distributes food and oxygen to epidermis cells

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11
Q

What gives the sponge support?

A

Spongin and spicules

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12
Q

What are tiny sponges growing from the body of the sponge called?

A

Buda

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13
Q

What is a gemmule?

A

A group of amebocyte so covered by a hard outer covering

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14
Q

What is a hermaphrodite?

A

They produce eggs and sperm

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15
Q

What is the jellylike layer between the two skin layers called?

A

Mesohyl

16
Q

What cells move in the Mesohyl delivering food and oxygen to other cells?

A

Amebocytes

17
Q

What part of the collar cell pulls in water?

A

Flagella

18
Q

What are collar cells called?

A

Choanocytes

19
Q

What level of organization of sponges is missing?

A

They don’t have tissue or organs

20
Q

How do sponges reproduce?

A

Sexually and asexually

21
Q

Do sponges federalize their own eggs?

A

No

22
Q

When do sponges release gemmules?

A

After an adult sponge dies

Marine Bio (18 decks)

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