Starfish Development Flashcards
A single cell – a fertilized egg or “________”
zygote
Begins a period of rapid cleavage by _______ producing an ever greater number of progressively __________.
Mitosis, smaller cells
The cell mass will produce a _________ by hollowing out the center.
Blastula
________ of the blastula produces a _________ with two distinct tissue layers, _________ & _________
Invagination, gastrula, ectoderm, endoderm
A new tissue layer created by ________ on the endoderm called the…
Budding, mesoderm
A _______ is produced when the digestive tract is complete
Bipinnaria
First opening becomes the ______, second opening becomes the _______.
Anus, mouth
A ___________ is produced as the digestive tract migrates. . . the original mouth & anus move to the ___________ sides.
Branchiolaria, right & left
_________ allow attachment in temporarily sessile stage.
Adhesive pads
The Mouth marks the ________ side, the anus on the ________ side.
Oral, aboral
After a short period of sessile existence the metamorphosis is complete and a _______ is created.
Young sea star
The order of development for a starfish is…
Zygote, blastula, invagination, bipinnaria, branchiolaria, young adult, adult
