Chapter 33 -4

Question 1

How does hydrozoa reproduce?

Answer 1

sexually - sperm from testes/eggs from ovaries

asexual - budding

Question 2

In hydrozoa sexual reproduction is hermaphroditic?

Answer 2

male & female organs on 1 individual

Question 3

In hydrozoa sexual reproduction what does the fertilized zygote become?

Answer 3

planula larvae

Question 4

In hydrozoa portuguese man-o-war is aka?

Answer 4

physalia

Question 5

What is physalia?

Answer 5

marine
multi-polyp body style
very dangerous toxin
attached to floating bladder called pneumatophore

Question 6

True jelly fish come from what class? what phylum?

Answer 6

Scyphozoa

cnidaria

Question 7

What are true jellyfish?

Answer 7

all free swimming medusa forms

colorless, invisible in water

Question 8

How do true jellyfish sexually reproduce?

Answer 8

with planula larvae

Question 9

Box jellies are from what class? what phylum?

Answer 9

cubozoa

cnidaria

Question 10

What are box jellies?

Answer 10

all strong swimming medusa forms
fish predators
image forming eyes
strong neurotoxin sting