answer

watching

views

19 Jun 2018

Which of the following statements about Hemichordates is NOT true?

1. They are exclusively marine animals

2. They have the typical tricoelomate structure of deuterostomes

3. They belong to the phylum Chordata

4. They have an open circulatory system

5. The two well-known classes of hemichordates are Enteropneusta and Pterobranchia

answer

watching

1,179

views

For unlimited access to Homework Help, a Homework+ subscription is required.

You have 0 free answers left.
Get unlimited access to 3.8 million step-by-step answers.

Get unlimited access

Already have an account? Log in

Bunny GreenfelderLv2

20 Jun 2018

Unlock all answers

Get 1 free homework help answer.

Already have an account? Log in

Related questions

Biology 103

Chapter 15 Animals

1.Phylum Mollusca includes animals such as ___________, _____________, and ________________. They have a coelom. Their body consists of three parts _______________, ____________________, and _______________. Their shells are produced by _________________ .

2.Phylum Annelida includes animals such as ____________________, __________________, and ___________________. They have a coelom. ___________________ is a special segment of the earthworm that participates in reproduction.

3.Phylum Echinodermata includes animals such as ___________________, __________________, and ___________________. They have _____________________________________ system that provides hydrostatic power for locomotion.

4.Animals of Phylum Chordata all have ______________________, _________________________, _______________________, and ___________________________.

5._____________________ and ______________________ are the invertebrates in Phylum Chodata.

6.Fish includes cartilaginous fish and bony fish. Bony fish includes ray-finned fish and lobe-finned fish. Lobe-finned fish is considered ancestral to ____________________.

7.Birds and reptiles lay ______________ eggs to protect the developing embryo on dry land.

8.Birds and mammals can maintain their body temperature, they are __________________. Mammals that lay hard-shelled eggs such as _________________ are called ________________________; Mammals that have pouches such as _____________________ are called ___________________; Mammals that have placenta for fetal development are called _______________________. We belong to the Order _______________.

QUESTION 94

Which characteristic is shared by Phylum Cnidaria and Phylum Platyhelminthes?

		dorsoventrally flattened bodies
		radial symmetry
		a distinct head
		a digestive cavity with a single opening (sac-like)

1 points

QUESTION 95

Which of the following is not a characteristic of members of Phylum Porifera?

		choanocytes
		asymmetry
		nervous system
		spicules

1 points

QUESTION 96

Most animals are bilaterially symmetrical deuterostomes.

True

False

1 points

QUESTION 97

Parasitism is one of the most widespread life strategies to evolve. Which of the following supports this finding?

		Parasites almost always predigest their hosts' tissues and, therefore, spend less energy and require fewer structural adaptations.
		Parasites, unlike predators, feed on almost all the tissues of their hosts.
		Parasites do not generally kill their hosts; thus they can feed on the same host throughout the host's normal life span and do not have competition from decomposers.
		Parasites generally kill their host and can feed for a very long time because they are much smaller than their host.

1 points

QUESTION 98

The production of sterile mules by interbreeding between female horses (mares) and male donkeys (jacks) is an example of _____.

		reduced hybrid viability
		hybrid breakdown
		reduced hybrid fertility
		mechanical isolation

1 points

QUESTION 99

A snail-like, coiled, porous test of calcium carbonate is characteristic of

		diatomes
		ciliates
		water molds
		foraminiferans

1 points

QUESTION 100

Which group of algae can create "red tide"?

		Phaeophyta
		Dinoflagllata
		Rhodophyta
		Chlorophyta

1.What are the advantages of organisms having a 4-chambered heartover less chambers?

2. The differences of Nitrogen waste elimination between mostaquatic animals, mammals, and birds.

3. Domarine fish drink seawater? If so, how do they regulate the saltintake?

4.Organisms like jellyfish, spongesand flatworms do not have a circulatory system or lungs. Whatadaptations do these organisms have for oxygen delivery?

Please explainanswer FULLY (2-3SENTENCES) for each question for full points and 5 starrating!