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A month ago
a The lateral line of a shark is used for

1 Heat sensing for locating prey

2 Odor detection

3 Excretion

4 detecting and locating objects and moving animals in the water

b The group of fish that have skeletal elements in the fins in addition to dermal rays

1 Sarcopterygii

2 Actinopterygii

3 Petromyzontida

4 Elasmobranchii

c Which of the following is NOT a characteristic of all chordates at some point in thier life cycle?

A.   A bony or cartilaginous exoskeleton

B.A dorsal, tubular nerve cord

C. A notochord

D.   Pharyngeal gill arches/slits

D Which of the following includes tunicates and sea squirts

1 Myxini

2 Cephalochordata

3 Urochordata

4 Hemichordata

E Which of the following has the pronephritic kidney through adulthood?

1 Actinopterygii

2 Chondrichthyes

3 Sarcoptyergii

4 Myxini

F  The Gnathostomata...

1  are vertebrates with jaws.

2  are vertebrates without jaws.

3 are completely extinct.

4 includes the protochordates.

G   Osmoregulation in sharks is accomplished via...

1  salt absorbing cells in the gills.

2  simple diffusion.

3 the rectal gland.

4 malpighian tubules.

H  Echinoderms are more closely related to vertebrates than they are to other invertebrates such as arthropods and annelids because...

1  they have similar larval stages.

2  they are triploblastic.

3  they are deuterostomes.

4  they have a complete digestive tract.
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wrote...
Educator
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Posts: 24240
A month ago
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a The lateral line of a shark is used for 1 Heat sensing for locating prey 2 Odor detection 3 Excretion 4 detecting and locating objects and moving animals in the water

#4

Working on the others
Post Merge: A month ago

b The group of fish that have skeletal elements in the fins in addition to dermal rays 1 Sarcopterygii 2 Actinopterygii 3 Petromyzontida 4 Elasmobranchii

#1
Post Merge: A month ago

c Which of the following is NOT a characteristic of all chordates at some point in thier life cycle? A.   A bony or cartilaginous exoskeleton B.A dorsal, tubular nerve cord C. A notochord D.   Pharyngeal gill arches/slits

The five characteristic features of chordates present during some time of their life cycles are a notochord, a dorsal hollow tubular nerve cord, pharyngeal slits, endostyle/thyroid gland, and a post-anal tail.

( A )

Will work on the rest tomorrow!
Post Merge: A month ago

D Which of the following includes tunicates and sea squirts 1 Myxini 2 Cephalochordata 3 Urochordata 4 Hemichordata

Cephalochordata
Post Merge: A month ago

E Which of the following has the pronephritic kidney through adulthood? 1 Actinopterygii 2 Chondrichthyes 3 Sarcoptyergii 4 Myxini

Guessing it's #4

Some interesting information:

In the developing fetus, the mesoderm-derived urogenital ridges give rise to three sets of kidneys: the pronephros, mesonephros, and metanephros"

1. The pronephros forms and degenerates during the fourth through sixth weeks, but the pronephric duct persists, and connects later-developing kidneys to the cloaca.

2. The mesonephros develops from the pronephric duct, which then is named the mesonephric duct, and persists until development of the metanephros.

3. The metanephros develops at about five weeks, and forms ureteric buds
Post Merge: A month ago

F  The Gnathostomata... 1  are vertebrates with jaws. 2  are vertebrates without jaws. 3 are completely extinct. 4 includes the protochordates.

Gnathostomes or “jaw-mouths” are vertebrates that possess jaws.
Post Merge: A month ago

G   Osmoregulation in sharks is accomplished via... 1  salt absorbing cells in the gills. 2  simple diffusion. 3 the rectal gland. 4 malpighian tubules.

#3
Post Merge: A month ago

H  Echinoderms are more closely related to vertebrates than they are to other invertebrates such as arthropods and annelids because... 1  they have similar larval stages. 2  they are triploblastic. 3  they are deuterostomes. 4  they have a complete digestive tract.

#3
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wrote...
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A month ago
All Done. I've marked my post as solved.

If you have any other questions, please limit each thread you create to one question!
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