Zoology BS 8 Semester/Term BZU — Bahauddin Zakariya University 2019

BS-701-19-23

BAHAUDDIN ZAKARIYA UNIVERSITY, MULTAN

BS 8th Semester, 2019-23

Subject: Zoology

Paper: Mammalogy (BSZF-801)

Max. Marks: 60

Time Allowed: 2:30 Hrs

Part-I

Q

1. Encircle the correct option from the given statements. No cutting and over-writing is

allowed. (10)

i. The order with the most mammalian species is:

(a) Lagomorpha

(b) Rodentia

(c) Artiodactyla

(d) Carnivora

ii. The order with the largest extant mammalian species is:

(a) Proboscidea

(b) Rodentia

(c) Perissodactyla

(d) Artiodactyla

iii. It is thought that metatherian mammals:

(a) Originated in North America and then moved into both Asia and South America

(b) Originated in Asia and then moved to North America and South America

(c) Originated in Australia and moved through South America to reach other parts of global

distribution

(d) Originated in North America and moved from South America to Australia to Asia

iv. Regarding Kangaroos: Which is most correct:

(a) Kangaroos are placental mammals that give birth to live young

(b) Kangaroos fill a grazing/browsing niche that is occupied by deer in North America

(c) Kangaroos became extinct everywhere but Australia about 10,000 years ago

(d) The only function of the Kangaroo's tail is for balance

v. The duck-billed platypus (Ornithorhynchus anatinus):

(a) Is a placental mammal

(b) Has teeth even as an adult

(c) Is one of the that does not lay eggs

externally

(d) Is thought to be a relatively primitive mammal

vi. The order Xenarthra is so named because:

(a) It includes three very diverse families of terrestrial mammals

(b) One of the ancestral lineages included a very large ground sloth

(c) Members have additional processes on most vertebrae compared to other mammals

(d) Their metabolic rate is relatively lower then the metabolic rate of most other mammals

P.T.O.