Which group of mammals is the most speciose?
A. Proboscidea (elephants)
B. Rodentia (squirrels, rats, mice)
C. Perissodactyla (horses, zebras, rhinos)
D. Chiroptera (bats)
E. Carnivora (dogs, cats, bears, walruses)
Ans: B. Rodentia (squirrels, rats, mice)
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Arrange the following five events in an order that explains the mass flow of materials in the phloem
1. Water diffuses into the sieve tubes. 2. Leaf cells produce sugar by photosynthesis. 3. Solutes are actively transported into sieve tubes. 4. Sugar is transported from cell to cell in the leaf. 5. Sugar moves down the stem. A) 2, 1, 4, 3, 5 B) 1, 2, 3, 4, 5 C) 2, 4, 3, 1, 5 D) 4, 2, 1, 3, 5 E) 2, 4, 1, 3, 5
If an XY human had a genetic disorder that causes insensitivity to androgens, that person's genotype and phenotype would be
A. XX, female. B. XX, male. C. XY, female. D. XY, male.
Gibbons and orangutans are from Asia. Gorillas and chimpanzees are from Africa. How was Charles Darwin able to predict that humans evolved in Africa?
A. He understood that humans and Great Apes were closely related. B. He understood that humans and gorillas are more closely related than humans and orangutans based on anatomical criteria. C. He understood that humans and orangutans are more closely related than humans and gorillas based on anatomical criteria.
Select all correct descriptions of the cerebellum.