Which group of animals will bear live young that are underdeveloped and must stay in the mother's ...

Which group of animals will bear live young that are underdeveloped and must stay in the mother's pouch to complete their development?

A) Placentals
B) Marsupials
C) Prokaryotes
D) Angiosperms

Q. 2 - Which organism, developing approximately 4.2 million years ago, represents the link between humans and apes?

A) Homo habilis
B) Homo erectus
C) Homo sapiens
D) Australopithecus

Q. 3 - Which of Earth's major extinctions was the most extensive, eliminating 70 percent of all terrestrial organisms and up to 95 percent of marine organisms?

A) Cambrian Explosion
B) Permian Extinction
C) Cretaceous Extinction
D) Late Devonian Extinction

Q. 4 - When did the first terrestrial plants appear on the land surface?

A) 400 million years ago
B) 327 million years ago
C) 225 million years ago
D) 65 million years ago

Q. 5 - Why did invertebrates, particularly arthropods, get so large in the Late Paleozoic?

A) There was more moisture in the atmosphere.
B) Ozone in the atmosphere shielded them from ultraviolet radiation.
C) There was more vegetation for them to feed on.
D) There was more oxygen in the atmosphere.

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Which group of animals will bear live young that are underdeveloped and must stay in the mother's ...

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