Ch. 13 - Xenarthrans

Question 1

This eutherian order contains anteaters, sloths, and armadillos

Answer 1

Xenarthra

Question 2

Are xenarthrans an almost entirely New World order?

Answer 2

Yes

Question 3

What is an example of an Old World xenarthran?

Answer 3

Aardvark

Question 4

Do xenarthrans have high dental diversity?

Answer 4

No

Question 5

Do anteaters completely lack teeth?

Answer 5

Yes

Question 6

Do sloths and armadillos lack canines and incisors?

Answer 6

Yes

Question 7

Do xenarthrans use delayed implantation?

Answer 7

Yes

Question 8

Armadillos have this form of reproduction

Answer 8

Monozygotic polyembryony

Question 9

How many offspring do armadillos have at a time?

Answer 9

4

Question 10

This disease occurs naturally in 4.5-15% of armadillos

Answer 10

Leprosy

Question 11

Are armadillos good thermoregulators?

Answer 11

No

Question 12

What are four characteristics of armadillos that restrict them to moderate environments?

Answer 12

Low metabolic rate; Low body temperature; No torpor; High thermal conductance

Question 13

What is the scientific name of the nine-banded armadillo?

Answer 13

Dasypus novemcinctus