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Flashcards in Porifera Deck (10)
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1

What are the characteristics?

no gastrulation, no true tissues, some specialised cells

2

What organisms are in this phylum?

Sponges

3

What are the key features of sponges?

simple body plan, no nuclei, may be asymmetrical, usually hermaphrodite

4

What is the mode of life?

Sedentary

5

how do they feed?

Capture food particles through water that passes through perforated body

6

What is the spongeocoel?

central cavity

7

What is the osculum?

Exit from which water flows out of spongeocoel

8

what are amebocytes?

mesophyll cells that can transport nutrients to other cells of the body

9

How do they reproduce?

Eggs reside in mesophyll, sperm carried into water for cross pollination, zygotes develop into flagellated swimming larvae that settle on suitable substrate to develop

10

How are they useful in human disease?

Produce many antibiotics