Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Vertebrates Quiz 1 > Mammals 3 > Flashcards

Mammals 3 Flashcards

1
Q

What is a marsupium?

A

a pouch that the young are born and developed in

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What are 5 features of the North American Opossum?

A 
Prehensile nearly naked, scaly tail
Females have a pouch (marsupium)
First toe on hind foot is opposable and clawless
Born extremely undeveloped (altricial)
Complete embryonic development in pouch
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is “Playing possum”?

A

an involuntary physiological response to extreme fear that results in a near coma for up to 4 hours and is an adaptation to help against predators that don’t like to eat dead things

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How do you distinguish between moles and shrews?

A

Moles have enlarged front feet with broad palms and large claws and are mostly blind and deaf
Shrews have smaller front feet and the claws are not as long and have a long snout with a high forehead

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are 6 features of shrews?

A

1) small mammals with long pointed noses
2) eyes and external ears are small but visible
3) skull is long and narrow and lacks a zygomatic arch
4) large incisors and red pigment on the tips of teeth (iron deposit)
5) Feed on invertebrates and sometimes small fish and larval amphibians
6) Water shrews have a fring of hairs on their feet adapted for swimming

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are 6 features of moles?

A

1) front feet and limbs highly modified for digging
2) short tail
3) long snout, small eyes (almost blind) and short neck
4) no tympanic bullae and no esternal ears (pinnae) = mostly deaf
5) fur short and can lay in any direction = adaptation for going in and out of a burrow
6) feed mainly on earthworms

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How many species of bats are there in BC?

A

17

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are 6 features of bats (chiroptera)?

A

1) forelimbs modified for flight
2) hindlimbs small and weak and knee joint points backwards
3) Calcar - a cartilagionous spur from an ankle bone
4) Large ears with tragus
5) Ecolocation
6) mostly insect eaters

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Why are bat knees backwards pointing?

A

for hanging upside down and to push off of walls etc.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Why do bats have a calcar?

A

Spread patagium evenly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is a Tragus?

A

Fleshy part inside of ear to help with receiving ecolocation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is Torpor and what sex of bats do this?

A

Torpor is a semi-hibernation that lasts a few hours and is entered daily by male bats.
Females rarely enter torpor because it wouldn’t likely support an embryo
Females would need to consume more food in order to reach same energy level as males

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is True hibernation?

A

Prolonged drop in body temperature and metabolic rate and is to conserve energy over days or weeks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How many families are there in the Order Rodentia?

A

8

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What are 3 features of the mountain beaver?

A
  • Most primative living rodent
  • Very short tail
  • White spot just below ear
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What are 3 features of flying squirrels? What order are they in?

A

Order Rodentia

  • Eat fungi, lichens, berries, seeds
  • Can glide up to 50m (avg. 20m) from tree to tree
  • Dark eyes with a black ring
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What order and family do marmots and woodchucks belong?

A

Order rodentia

Family squirrels

18
Q

How many species of ground squirrel are therre in BC?

A

4 species

19
Q

What are 2 species of native squirrels?

A

Red squirrel and douglas’ squirrel

20
Q

What are 2 species of invasive/introduced squirrels?

A

Eastern fox squirrel and Eastern grey squirrel

21
Q

What is the problem with the Eastern grey squirrels?

A

They outcompete red squirrels and the red squirrels waste energy being territorial and competing for food w/ the grey squirrel that doesn’t care about territory

22
Q

What is a species and a feature of the family pocket gophers?

A

Northern pocket gopher and has fur-lined external cheek pouches

23
Q

What kind of cheek food pouch to family pocket mice have?

A

external fur lined

24
Q

Why do beavers flood areas?

A

To make it easier for them to travel around and transport the trees that are their food source

25
Q

Why do beavers build lodges?

A

Safety from predators

26
Q

Why are beavers called ecosystem engineers?

A

They modify and affect other species

27
Q

Where is a beaver lodge often located?

A

In the middle of the pond with an underwater entrance, lodge is above water though

28
Q

What animals are in the family Muridae?

A

rats, mice, voles, lemmings, muskrats

29
Q

What are 3 features of muskrats?

A

Scaly and laterally flattened tail
Hind feet are partially webbed with stiff hairs
Build burrows in mudbanks of ponds

30
Q

What is a feature of voles and how many species are found in BC?

A

10 species of voles
Stocky bodies, short legs and short tail
Look like shrews but have a smaller snout

31
Q

How do you tell mice and voles apart?

A

Mice have large eyes, large ears, long tails, pointy noses

Voles have small eyes, smalle ears, short tails, blunt noses

32
Q

What are the 2 species of introduced rats and how did they get here?

A

Norway rat and Black rat (roof rat)

Arrived on sailing ships likely

33
Q

How do you tell norway and black rats apart?

A

Norway rats have tail that is shorter than head and body and smaller ears
Black rats have a tail longer than head and body and large ears

34
Q

What is the indroduced species of mouse and 2 features. How do these features differ from the native mice?

A

House mouse
- naked scaly tail
- associated with humans
Differ from native mice because native mice have furred tails

35
Q

What are 3 features of the deer mouse?

A
  • Long furry tail
  • Dorsal fur brown and ventral fur white
  • Dorsal surface of hind foot white
36
Q

What are 3 features of the bush-tailed (packrat) woodrat?

A
  • Long bushy almost squirrel-like tail
  • Skin gland on chest and urination to mark territory
  • Long vibrissae
37
Q

How many species are there in BC of the family jumping mice and what are 2 characteristics?

A

3 Species

  • Long hind limbs and feet
  • Very long nearly naked tails
38
Q

What are the spines on a porcupine?

A

Modified guard hairs

39
Q

How do you tell a pika (lagomorph) from rodents?

A

Pikas have small ears and no tail, rodents have tails

40
Q

How many native species of hares and rabbits are there in BC

A

3 (one extirpated and the other 2 not doing well)

41
Q

What are 2 introduced species of lagomorphs in BC?

A

Eastern cottontail and European rabbit

42
Q

What are 3 ways to tell lagomorphs apart from rodents?

A
  • Lagomorph tails are not visible or are powderpuff-like, rodent tails are long and not powderpuffy
  • Lagomorph rostrum skull is fenestrated
  • Lagomorphs have double upper incisors, one behind the other

Vertebrates Quiz 1 (16 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions