Vocabulary
Random
Reproduction
Parts of the Body
Multiple Choice
100
What is the difference between a medusa and a polyp?
A medusa is free-swimming and a polyp is sessile.
100
How does a coral reef form?
Coral larvae attach to submerged rocks or other hard surfaces along the edges of islands or continents.
100
What is dioecious?
Having separate male and female sexed organisms.
100
What is the function of the gastrodermal gland cells?
They secrete enzymes to digest food.
100
Which class of cnidarians has no medusa stage? a. Anthozoa b.Hydrozoa c.Scyphozoa d.None of the above
Anthozoa
200
What is the difference between an epidermis and a gastrodermis?
An epidermis is the outer layer and the gastrodermis is the inner layer.
200
How do algae and polyps both benefit from their relationship.
Algae get protection and housing from polyps and enable them to produce their exoskeleton.
200
What is monoecious?
Organisms who can produce both sperm and eggs
200
What is the function of the gastrovascular cavity?
Digestion,exchange of gases, waste, and gamete production
200
The cnidarians known as jellyfish are members of the class a. Hydrozoa b. Anthozoa c. Scyphozoa d. Cestoda
Scyphozoa
300
What is the mesoglea?
A mesoglea is a gel-like substance between the epidermis and gastrodermis.
300
What is the dominant body form in the life cycle of scyphozoan.
Medusa
300
What is a planula?
a larval stage zygote after sperm and eggs fertilize in open water
300
What is the function of the hydrostatic skeleton?
Gives support and movement
300
The body form called a medusa is a. commonly found with the tentacles pointing downward b.commonly found with tentacles pointing upward c.common to sponges,anemones, and corals d. found only in sessile organisms
commonly found with the tentacles pointing downward
400
What is a tentacle?
The structure that coordinates the complex activities of a cnidarian's body.
400
What is the dominant body form in the life cycle of an anthozoan?
Polyp
400
What major class can not produce asexually?
Staurozoa
400
Where are the nerve cells located.
They are located below the epidermis
400
Hydras and anemones are both a.hyrdozoans b.anthozoans c.parasitic d.sessile
sessile
500
What is a Portuguese man-of-war an example of.
Hydrozoa
500
How are nematocysts adapted for capturing prey?
They have a harpoon and spring to spring out and attack prey.
500
What is the life cycle stage after fertilization?
a zygote
500
What is the function of the gastrodermis?
Serves as the lining membrane of the gastrovascular cavity
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