mammals

Question 1

It is universally accepted by biologists that mammals have evolved from __ ancestors

Answer 1

cotylosaurs ( reptilian )

Question 2

The term Mammal was given it’s name by

Answer 2

Linneaus

Question 3

Mammals became dominant in the __ period.

Answer 3

Cenozoic

Question 4

There is a ___ in mammals that separates the thoracic and abdominal cavities.
This structure is not found in any previous group.

Answer 4

muscular diaphragm

Question 5

Mammals have__chambered heart and only __ aortic arch

Answer 5

4
left

Question 6

RBC in mammals are __

Answer 6

non nucleated

Question 7

Prototheria are ___ animals

Answer 7

egg laying

Question 8

Metatheria are __ animals

Answer 8

pouched

Question 9

Eutheria are __ animals

Answer 9

placenta bearing

Question 10

The ___ a is that group which has characteristics of both reptiles
and mammals and therefore form a connecting link between the two.

Answer 10

Prototheria

Question 11

Example of prototheria

Answer 11

Duck bill platypus
Echidna spiny ant eater

Question 12

abdominal pouch of metatheria is called __

Answer 12

marsupium

Question 13

eg of metatheria

Answer 13

Opossum, Kangaroo and Tasmanian wolf