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Why are echinoderms thought to have evolved from bilaterally symmetrical ancestors?
Wiki User
∙ 10y ago
because in their larval stage they are bilaterally symmetrical.
Wiki User
∙ 10y ago
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What is a theraspid?
A therapsid is a group of animals consisting of mammals and their ancestors. They are notable for their complex jaws and evolved teeth and their upright posture.
Do human beings have tails?
Human beings do not have tails. However all humans do have several bones at the base of the spine that are the vestigial remains of what was a tail in times past, before the human species evolved from apelike ancestors.
How were humans created scientifically?
Science provides compelling evidence, through DNA and the fossil record, that humans evolved. Our earliest hominid ancestors diverged from the ancestor of chimpanzees around seven million years ago, and modern humans, Homo sapiens evolved around 250,000 years ago.For more information, please visit: http://christianity.answers.com/theology/the-story-of-creation
What was first group of animals to use an amniotic egg?
the amniotic egg first evolved during the Carboniferous period. It evolved from amphibian ancestors and gave rise to the predecessors of reptiles and eventually gave rise to reptiles. not sure if that answers your question or not... be more specific next time.
What is the correct interpretation of the cladogram shown below?
Koalas evolved after trout
Which animal has radial symmetry?
Cnidarians are true radially symmetrical animals. They include jellyfish. Echinoderms (like starfish) also display radial symmetry. It is important to note that the larvae of echinoderms are bilaterally symmetrical and that Echinoderms evolved from a bilaterally symmetrical group.
What evolved first cnidarians or echinoderms?
I believe Echinoderms evolved first.
Why do foxes look like?
Because cats evolved from the ancestors of the fox - just as dogs evolved from the ancestors of the wolf.
Is evolution of human true?
Yes it is, we are evolved from our ancestors. All the species are in fact evolved from its previous.
What diagram shows how animals evolved from common ancestors?
A taxanomic tree.
Why is radial symmetry is found among aquatic species rather than animals that live on land?
All life on land evolved from a few aquatic ancestors. It just so happens that all of these ancestors were not radially symmetrical, so all land animals are not radially symmetrical.
What is the body symmetry of fish?
clown fish have bilateral symmetry
What scientist argued that modern species were descended from ancestors that had evolved?
Charles Darwin
Who are the ancestors of chimpanzees?
The ancestors of today's chimps were ape like creatures that roamed the Earth millions of years ago. Chimps and humans evolved from these creatures.
The human appendix is a structure that suggests that humans evolved from plant-eating ancestors?
vestigal
Were dogs ever human?
No, humans and dogs have evolved from different ancestors, they are completely different species.
What 2 biochemical compounds support the idea things evolved from common ancestors?
Carbon and potassium
