Which of the following types of organisms survived the Permian extinction to bec

Question

Which of the following types of organisms survived the Permian extinction to become part of the Triassic biota?

Question 2 options:

4w

Brachiopods

Fusilinid foraminifera

Lacy Bryozoans

Trilobites

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Question 3 (2.5 points)

Therapsids and mammals had __________ skulls.

Question 3 options:

anapsid

diapsid

euryapsid

synapsid

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Question 4 (2.5 points)

Pangaea began to split up during the ___________ period, eruptions of __________ lavas accompanied the rifting.

Question 4 options:

Cretaceous, basaltic

Cretaceous, rhyolitic

Jurassic, basaltic

Jurassic, rhyolitic

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Question 5 (2.5 points)

Dinoflagellates are a type of _________ which flourished during the Jurassic, and ____________ today.

Question 5 options:

algae, are extinct

algae, remain diverse

mollusk, are extinct

mollusk, remain diverse

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Question 6 (2.5 points)

___________ were the most abundant type of plant during the Jurassic Period.

Question 6 options:

Angiosperms

Gymnosperms

Lycopods

Non-vascular seedless plants

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Question 7 (2.5 points)

Archaeopteryx _________ a breastbone, and was a ________ flier.

Question 7 options:

had, good

had, ungainly

lacked, good

lacked, ungainly

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Question 8 (2.5 points)

The splitting of Laurasia resulted in the formation of the modern __________ margins.

Question 8 options:

Atlantic ocean

Indian ocean

Mediterranean

Pacific ocean

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Question 9 (2.5 points)

Which of the following orogenies did NOT result in crustal deformation along the western North American margin during the Cretaceous period?

Question 9 options:

Acadian

Laramide

Nevadan

Sevier

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Question 10 (2.5 points)

Near the beginning of the Cretaceous __________ appeared, these plants are characterized by providing food their seeds by _____________.

Question 10 options:

angiosperms, cone formation

angiosperms, double fertilization

gymnosperms, cone formation

gymnosperms, double fertilization

4w

Brachiopods

Fusilinid foraminifera

Lacy Bryozoans

Trilobites

Explanation / Answer

2.During the permian extinction about 90% of marine animal species disappeared. Major groups like trilobite, rugose and tabulate corals, brachiopods, fusilinid foraminifers, blastoid echinoids, placoderm and acthonodian fishes were disappeared completely.Although brachipods,bryozoans, sharks, crinoids, ostracods, eurypterids and many echinoderms lost their diversity and survived during the triassic. Therefore brachipod survived the Permian extinction to become part of Triassic biota.

3. About 200 to 299 million years ago a major group of reptiles known as Therapsids lived and were the ancestors of mammals. They first appeared during the Permian period after flourishing they evolved into mammals. They include mammals and other cynodonts and form a subgroup which was a major group of ammonites under Synopsidia. Therefore Therapsids and mammals have synapsid skulls

4. Pangea was a super continent during the early geological time and all the landamasses were included in it and was surrounded by Panthalasa ocean. The supercontinent starts breaking during the about 200 million years ago during the early Jurassic period and finally leads to formation of modern continents as well as Atlantic and Indian ocean. During this rifting was acompanied by eruption of basaltic lavas. Therefore Pangea split up during the Jurassic, rifting was accompanied by basaltic lavas.

5. Dianoflagelletes are unicellur protists and exhibit a great diversity. They are a type of marine plankton algae. So dianoflagellates are a type of algae and remain diverse today.

6. Gymnosperm were the most abundant type of plant during the Jurassic period and includes ferns, cycads, conifer, Ginkos etx.

7. Archeoptryx dicovered from Jurassic limestone of Germany. He had a full set of teeth, a flat breastbone (sternum), three claws on the wings and a long bony tail. It was a transitional form of reptiles and birds. It was deduced that he was not a strong flier and could easily run, glide and flap. So Archeoptryx had a breastbone and ungainly flier.

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