Asked by Federico Maeso on Jul 16, 2024
Verified
Which of the following is true about deuterostomes?
A) Deuterostomes have two tissue layers.
B) Cleavage is spiral.
C) The first opening during embryonic development becomes the anus.
D) The mesoderm arises from cells located near the embryonic blastopore.
E) Deuterostomes include the ecdysozoa and the spiralia.
Deuterostomes
A classification of animals characterized by the anus developing before the mouth during embryonic development, includes vertebrates and echinoderms.
Embryonic Development
The process by which an embryo forms and develops, from fertilization to birth in animals or to the seedling stage in plants.
Ecdysozoa
Protostome characterized by periodic molting of the exoskeleton. Includes roundworms and arthropods.
- Comprehend the differences between protostomes and deuterostomes, encompassing their stages of development.
Verified Answer
SA
Sadia AfrinJul 23, 2024
Final Answer :
C
Explanation :
During deuterostome embryonic development, the first opening becomes the anus, and the second opening becomes the mouth. This is in contrast to protostomes, where the first opening becomes the mouth and the second opening becomes the anus.
Learning Objectives
- Comprehend the differences between protostomes and deuterostomes, encompassing their stages of development.