Vertebrates are a subphylum of the phylum Chordata. Like all chordates, vertebrates have a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail..
Similarly, you may ask, which phylum is exclusively marine and is named for having many spines and spikes?
Echinoderm, any of a variety of invertebrate marine animals belonging to the phylum Echinodermata, characterized by a hard, spiny covering or skin.
Additionally, in which vertebrates did feathers first evolve? Birds evolved from dinosaurs, but the origin of their feathers may trace back even deeper in time, to the common ancestor of dinosaurs and pterosaurs, like the fossil at left.
Thereof, what was the adaptive significance of the Amniote egg see Section 32.4 page 663?
See Section 32.4 ( page 663) . It allows internal fertilization. It allowed the deposition of yolk in eggs.
Which characteristic distinguishes echinoderms from other two Deuterostome lineages?
An organism that is radially symmetric does not have a well-developed head region. Which characteristic distinguishes echinoderms from the other two deuterostome lineages? Echinoderms exhibit a unique body plan characterized by an endoskeleton and a water vascular system.
Related Question Answers
What was the adaptive significance of Jaws?
Jawless fish are referred to as Agnatha, and the jawed fish are included in a group called Gnathostomata. Jaws provide a powerful adaptive advantage to vertebrates because they greatly expand the range of available food sources.Which group is most closely related to amphibians?
amphibians (The branching pattern of the phylogenetic tree makes it clear that amphibians are most closely related to reptiles and mammals.)What is the leading hypothesis on why humans evolved such large brains?
What is the leading hypothesis on why humans evolved such large brains? - They evolved because of competition with apes. - They evolved so humans could be better at locating and securing mates. - They evolved to help overpower other species.Why do skates and rays have flattened bodies while sharks are torpedo shaped?
Why do skates and rays have flattened bodies, while sharks are torpedo shaped? a)Skates and rays exchange gases across their skin and thus require a high surface-area-to-volume ratio, while sharks use gills to respire.What is the Out of Africa hypothesis quizlet?
The out of Africa hypothesis is a well-supported theory that argues that every living human being is descended from a small group in Africa, who then dispersed into the wider world displacing earlier forms such as Neanderthal. erectus in many regions supports theory.Which clade does not include humans?
Which clade does not include humans? Synapsid is a class of tetrapods. These are a group of animals that includes turtles, mammals and all extinct amniotes. These kind of clade also possesses humans.Which of the following groups is most closely related to humans?
Species Most Closely Related To Humans While orangutans and gorillas are in the great ape family, humans are most closely related to two other species in the family: bonobos and chimpanzees. However, while we are closely related to these two modern humans did not directly evolve from any primates that are alive today.What is true of a fossil that is classified as a transitional form?
What is true of a fossil that is classified as a "transitional form"? It has some of the traits of its ancestors and some of the traits of its descendants. only a fraction of any population will survive and reproduce.What was the adaptive significance of the Amniote egg?
It Allows Reproduction On Land. It Allows Internal Fertilization. It Allows The Production Of A Greater Number Of Eggs.Which animal reproduces by laying eggs?
Oviparous animals are animals that lay their eggs, with little or no other embryonic development within the mother. This is the reproductive method of most fish, amphibians, reptiles, all birds, and the monotremes.What is the middle of a feather called?
The part of the shaft where the vanes are located is called the rachis. The exposed base of the shaft is called the quill or calamus. The vane of a feather is very intricate. It's composed of structures called barbs. The rachis is the central part of the feather from which the barbs extend.What are the 3 types of feathers?
Types of Feathers The feathers we are used to seeing are flight and contour. Down feathers are what we use in pillows, quilts, and jackets. The other three feathers, semiplume, filoplume, and bristle, are not as common, but still useful to birds. When was the first fish?
530 million years ago
What is a feather made of?
Birds' feathers are light, strong and flexible Although it looks like feathers grow all over a bird, they actually grow in specific areas called feather tracks. In between the feather tracks are down feathers. This keeps the body weight down. Feathers are made of a tough and flexible material called keratin.What are peacock feathers called?
The most decorative feathers of the peacock are his tail feathers, called a train.What are the types of feather?
There are two basic types of feather: vaned feathers which cover the exterior of the body, and down feathers which are underneath the vaned feathers. The pennaceous feathers are vaned feathers. Also called contour feathers, pennaceous feathers arise from tracts and cover the entire body.What is a group of feathers called?
A group of feathers on a bird (6) PLUMES.What do humans use feathers for?
Feathers are used in a number of decorative products such as boas, feather fans, masks, costume accessories, bird ornaments, and even earrings and flowers. Feathers are also routinely used in the production of fishing flies.What do feathers stand for?
The feather, for example, is a powerful symbol that signifies honor and a connection between the owner, the Creator, and the bird the feathers came from. It symbolizes trust, honor, strength, wisdom, power, and freedom. It is an object that is deeply revered and a sign of high honor. 
