In protostome development, the mouth forms from the second embryonic opening, not from the blastopore. There is no coelom. The blastopore becomes the mouth. The blastopore becomes the anus. The coelom forms from mesodermal outpocketings of the gut.
Added by Kurt D.
Step 1
Step 1: In protostome development, the mouth forms from the second embryonic opening, not from the blastopore. Show more…
Show all steps
Your feedback will help us improve your experience
Melanie Mew and 100 other Biology educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Which of these does not pertain to a protostome? a. spiral cleavage b. blastopore is associated with the anus c. coelom, splitting of mesoderm d. annelids, arthropods, and molluscs e. mouth is associated with first opening
Patina H.
Animals with bilateral symmetry are divided into two clades: Protostomes and Deuterostomes. Protostomes means ... Group of answer choices The organism develops the anus first from the blastopore, mouth develops from another region of the embryo. The organism develops the mouth first from the blastopore, anus (if present) develops from another region of the embryo. None of the choices. The organism develops only one opening from the blastopore, which functions as the mouth and anus.
Adi S.
In vertebrates, the digestive tract forms from a. the blastopore. b. the dorsal lip. c. the archenteron. d. the mesoderm. e. both a and d.
Recommended Textbooks
Biology for AP Courses
Objective Biology for NEET
Introduction to General, Organic and Biochemistry
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD