Diversity of Animals II/Ecology Flashcards Preview

Biology > Diversity of Animals II/Ecology > Flashcards

Flashcards in Diversity of Animals II/Ecology Deck (210)
Loading flashcards...
1

What class was the first vertebrates to move onto land?

Amphibia

2

Give three (3) examples of organisms that were already on land before the amphibians

1. Plants
2. Snails
3. Arthropods

3

What are four (4) adaptions necessary for vertebrates to become terrestrial?

1. Lungs
2. Stronger limbs
3. Thermoregulatory mechanism
4. Reproductive strategies that don't involve water

4

Why are stronger limbs required to be terrestrial?

Air is 1,000 times less buoyant than water so strong limbs are necessary to prevent being crushed under own weight.

5

What causes a large diversity of terrestrial organisms?

There are lots of habitats to move into and adapt to.

6

What does "amphibia" literally translate to?

Amphi: Both
Bia: (Bio) Lives

Both lives

7

What are the two (2) stages of a frog?

1. Tadpole
2. Adult

8

What is the diet of a tadpole?

Herbivore

9

How does the tadpole move around?

Tail for swimming

10

Where does the tadpole live?

Aquatic

11

How does the adult frog move?

Legs

12

What does the adult frog eat?

Carnivore

13

How does the adult frog breathe?

Lungs

14

Describe "grasping" by a frog

The male grasps the female stimulating her to release eggs.

15

How are frog eggs fertilized?

The male releases sperm into the water where the eggs are fertilized.

16

Why must frog eggs be fertilized in water?

They have a jellycoat without a shell and would desiccate in air.

17

Describe the skeleton of amphibians

Bony skeleton

18

How many limbs to amphibians have?

Tetrapods (4 limbs)

19

Describe the skin of amphibians

Moist skin with mucous glands that are often toxic.

20

Describe three (3) ways that amphibians undergo gas exchange

1. Skin
2. Gills
3. Lungs

21

Describe the number of chambers in an amphibian heart

3-chambered heart:
1. 2 atria
2. 1 ventricle

22

What does ectothermal mean?

Body temperature is regulated by the environment

23

How do amphibians regulate their body temperature?

Ectothermal

24

How can some amphibians hear?

External eardrums for sound carried through the air.

25

What are four (4) possible causes of the crashes in amphibian populations?

1. Habitat alterations
2. Global warming
3. Acid rain
4. Fungal (chytridia) infection

26

What are three orders of the class Amphibia?

1. Caudata (aka Urodela)
2. Anura
3. Gymnophiona (aka Apoda)

27

What is the meaning of the word Caudata?

Tailed

28

What is the meaning of the word Anura?

Without tail

29

What is the meaning of the word Apoda?

Without feet

30

What is the meaning of the word Gymnophiona?

Naked Serpent