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What are echinoderms considered to be closely related to chordates?
both have deuterostome development...(:
What are echinoderms considered to be closely related to chordate?
both have deuterostome development...(:
What is deuterostome development?
Deuterostome development is a type of animal embryonic development in which the blastopore becomes the anus during gastrulation. This process is characterized by radial cleavage, indeterminate cleavage, and formation of an anus before a mouth. Deuterostomes include organisms such as vertebrates, echinoderms, and some invertebrate chordates.
Is a star fish a deuterostome?
During embryonic development, a deuterostome's first opening is its anus rather than its mouth. Starfish are a type of phylum that is classified as a deuterostome.
Is chordata deuterostome or protostome?
Chordata is a deuterostome. During development, deuterostomes form the anus first and the mouth second, whereas in protostomes, it is the opposite. Chordates, including humans, exhibit this deuterostome characteristic during embryonic development.
What does the blastopore become?
At the stage of development when the gut forms there is only a single opening into the digestive track, this opening may become either the mouth or anus. In the echinoderms, chordates, and hemichordates the blastopore becomes the anus and a new opening forms the mouth, these are called deuterostomes
Among coelomates in which of these does development occur by radial cleavage and the anus forms before the mouth?
Animals with deuterostome development exhibit radial cleavage, where the cells divide parallel or perpendicular to the polar axis of the embryo. In deuterostomes, such as echinoderms and chordates, the anus forms before the mouth during embryonic development.
What are the key differences between deuterostome and protostome development processes?
Deuterostome and protostome are two different ways in which animals develop. In deuterostome development, the first opening that forms becomes the anus, while in protostome development, the first opening becomes the mouth. This difference in the formation of the digestive tract is a key distinction between the two processes.
Why are enchinoderms considered to be closely related to chordates?
both have deuterostome development
What are the key differences between protostome and deuterostome development processes?
Protostome development involves the blastopore forming the mouth first, while deuterostome development involves the blastopore forming the anus first. This difference in embryonic development leads to distinct patterns of cell division and fate determination in these two groups of animals.
Which body plan feature evolved first radial symmetry or deuterostome development?
Radial symmetry
Are humans deuterostome?
Deuterostome. Anus is formed first.
