Sponges and Cnidarian

Pregunta	Respuesta
What distinguishes sponges from other invertebrates?	Their cells are not organized into tissues
What distinguishes sponges?	They are non-symetrical They lack organization into tissues and organs, **They posses cells that are capable of recognizing other sponge cells
What are Collar Cells?	Draw water into the body of the sponge
What are spicules?	Hard spike-like structures in the wall of the sponge
Describe the body of an Adult Sponge	Have body walls with many pores
What provides skeletal support in sponges?	Spicules of Calcium Carbonate and silicon dioxide, fibers called spogin
How do sponges obtain food?	By filtering small organisims from the water
In sponges, what draws water through them?	collar cells
Why is Hermaphoridism advantages in Sponges?	Because they are sessile and cannot move from where they are anchored at.
What is the role of Gemmules in sponges	Are necessary for one form of asexual reproduction
Where does water leave the interior of the sponge?	Osculum
What is the name of the cells that move through out the sponges body to deliver food the organisims cells?	Amoebocytes
Hermaphorditic Organisims produce both what??	Sperm and Egg
Collar Cell is to water (collar cell: water) as ???	Amoebocyte is to nutrients and waste (amoebocyte : nutrients and wastes)
What are the two disticnt life stages of cnidarians?	The polyp and medusa
Some fresh water sponges reproduce by gemmules, how do hermaphordites reproduce?	Produce both sperm and egg.
Which organisim produces nematocysts to capture its prey?	Sea anemone. Image: 7311ab7b-f94b-4983-b48d-721f4ad96502.PNG (image/PNG)
What are the ways in which sponges reproduce?	By the budding of new sponges from the parent By breaking off of the original parent into fragments that each become a new sponge **sexually using sperm and egg
What is true of Nematocysts?	can spear a cnidarians prey
What is the outer cell layer of the cnidarian called?	epidermis
The inner layer of the cnidarian is specialized for?	Digestion
What charactieristics is only associated with cnidarians?	cnidocytes specialized for defense and capturing prey
The phylum Cnidaria includes:	Jellyfish sea anemones corals
Why makes a Hydra unique among hydrozoans?	It has no medusa stage
Which of the following is not sessile as an adult? Sponge, coral, sea anemone, or Portuguese man of war	Portuguese man of war
What is the body form of a sea anemone?	Polyps

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	Creado por Melinda Colby hace casi 9 años