Which lists the three tissue layers in a typical animal?

Many, but not all, animals produce three embryonic tissue tissue layers (shown in Table 1) as they develop: the endoderm, mesoderm, and ectoderm. Some animals, most notably sponges, lack these tissue layers. Cnidarians (a group including coral and jellyfish) have only two of these layers, and are termed diploblastic.

Which of the following animals does not have a body cavity see Concept 32.3 page?

91 Cards in this Set

All animals can trace their lineage to a common ancestor that lived in the _____.	Precambrian period
Which of the following animals does NOT have a body cavity?	flatworm

Which characteristic is unique to all deuterostomes?

The defining characteristic of the deuterostome is the fact that the blastopore (the opening at the bottom of the forming gastrula) becomes the anus, whereas in protostomes the blastopore becomes the mouth.

What are the three body plans shown by Triploblastic organisms?

Animal tissues develop from embryonic germ layers. Triploblastic animals have three germ layers (ectoderm, mesoderm, and endoderm) and three basic body plans related to body cavities (acoelomate, pseudocoelomate, and coelomate).

What two features define animal phyla?

Animal phyla are classified according to certain criteria, including the type of coelom, symmetry, body plan, and presence of segmentation. Sponges (Porifera) have a primitive cellular level of organization and lack tissues and symmetry.

What are the features of animals?

The 8 Main Animal Characteristics

of 08. Multicellularity. …
of 08. Eukaryotic Cell Structure. …
of 08. Specialized Tissues. …
of 08. Sexual Reproduction. …
of 08. A Blastula Stage of Development. …
of 08. Motility (The Ability to Move) …
of 08. Heterotrophy (The Ability to Ingest Food) …
of 08. Advanced Nervous Systems.

May 15, 2019

Which of the following animals does not have a body cavity coelom )?

Acoelomate animals, like flatworms, have no body cavity at all. Semi-solid mesodermal tissues between the gut and body wall hold their organs in place.

Which of the following animals does not have a body cavity coelom?

(d) Echinodermata. Hint: The animal phyla that does not possess a coelom is generally known as flatworms, these invertebrate species are unsegmented worms with bilateral symmetry.

What is the distinguishing feature of all deuterostomes quizlet?

What unique characteristic do all deuterostomes have in common? The pore (blastopore) formed during gastrulation becomes the anus.

What are three defining features of deuterostomes?

The three main characteristics of deuterostomes include an anus that is formed before the mouth, a mesoderm is formed from pockets of the gut, a radial, regulative, and indeterminate cleavage.

Which of the following are characteristics that are used to classify and divide the animal phyla?

Animal phyla are classified according to certain criteria, including the type of coelom, symmetry, body plan, and presence of segmentation.

What is a major new feature of animals with 3 germ layers?

Animals with three germ layers, called triploblasts, are further characterized by the presence or absence of an internal body cavity called a coelom. Animals with a body cavity may be either coelomates or pseudocoelomates, depending on which tissue gives rise to the coelom.

What are some features of animal body plans?

Terms in this set (22)

Symmetry of the body.
The structure of the body cavity.
The segmentation of the body plan.
External appendages that are used for sensing, chewing, locomotion, mating, and other functions.
The development of a Nervous System.

What are the characteristics of each phyla?

Animals

Phylum	Meaning	Distinguishing characteristic
Chaetognatha	Longhair jaw	Chitinous spines either side of head, fins
Chordata	With a cord	Hollow dorsal nerve cord, notochord, pharyngeal slits, endostyle, post-anal tail
Cnidaria	Stinging nettle	Nematocysts (stinging cells)
Ctenophora	Comb bearer	Eight "comb rows" of fused cilia

Which features are characteristics of most animals?

All animals are eukaryotic, multicellular organisms, and almost all animals have specialized tissues. Most animals are motile, at least during certain life stages. Animals require a source of food to grow and develop. All animals are heterotrophic, ingesting living or dead organic matter.

What are the main features used to classify animals?

Animals can be classified according to different physical characteristics, such as body covering (e.g., hair, fur, feathers, scales, shells), body shape (e.g., two main features, three main features), appendages (e.g., arms, legs, wings, fins, tails), and method of movement (e.g., walking, crawling, flying, swimming).

What is tube within a tube body plan?

Tube-within a tube body plan means that the animal body consists of two tubes, one formed by the body wall and second formed within it by the digestive tract. This type of body plan is found in Ascaris. Sponges have a cell-aggregate body plan.

Which of the following include functions of the fluid in the body cavity of an animal?

Which of the following include functions of the fluid in the body cavity of an animal? It can act as a circulatory system.

What tissue layer lines the body cavity of an animal that contains a coelom?

Mesoderm Mesoderm lines the coelom and forms the peritoneum, which also surrounds and supports the internal organs.

What is a coelom quizlet?

coelom. a body cavity that runs the length of a vertebrate; it separates the body into an inner tube and an outer tube.

Which of the following is a characteristic of deuterostome animals?

Complete step by step answer: The two characteristics of deuterostomes are radial cleavage and the blastopore becoming anus. In deuterostomes, the early divisions occur parallel or perpendicular to the polar axis. This pattern of cleavage is called radial cleavage.

What is one characteristic that separates deuterostomes from all other animals?

Like echinoderms, chordates are deuterostomes. The four most prominent characteristics that distinguish chordates from species in all other phyla are the presence of a post-anal tail, a notochord, a dorsal, hollow nerve cord, and pharyngeal slits (also called gill slits).

What are the features of deuterostome development?

Which feature of deuterostome development explains the formation of identical human twins? Deuterostomes have indeterminate development. In deuterostomes, the blastopore becomes the anus.

What is a deuterostome quizlet?

Deuterostomes. A major lineage of animals that share a pattern of embryological development, including radial cleavage, formation of the anus earlier than the mouth, and formation of the coelom by pinching off of layers of mesoderm from the gut. Includes echinoderms and chordates.

Which of the following characteristics are used to classify animals?

Animals have been traditionally classified according to two characteristics: body plan and developmental pathway. The major feature of the body plan is its symmetry: how the body parts are distributed along the major body axis. Symmetrical animals can be divided into roughly equivalent halves along at least one axis.

Which of the following are the seven features of animals used in classification?

7 Important Criteria for Classification of Animal Kingdom

Symmetry: Many protozoan's are asymmetrical because they are not divisible into equivalent parts; a few show spherical symmetry. …
Segmentation: …
Appendages: …
Skeleton: …
Sex: …
Embryonic development: …
Larvae:

Which of the following is a correct association of an animal germ layer with the tissues or organs to which it gives rise?

So, the correct option is 'Mesoderm: pancreas'.

Which of the following tissue develops from all germ layers?

Epithelial tissue derived from ectoderm is generally squamous epithelium; epithelial tissue derived from endoderm is essentially glandular epithelium. There are a variety of body tissues derived from the third or middle primary germ layer known as the mesoderm. These body tissues include: Muscles.

What are the 7 features of animal body plans?

Features of animal body plans include levels of organization, body symmetry, differentiation of germ layers, formation of body cavities, patterns of embryological development, segmentation, cephalization, and limb formation.