Tripoblastic - Deuterostomes - Chordata - Reptilia Flashcards

1
Q

Reptiles don’t have feathers or hair but

A

Scales

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2
Q

Endothermic or ectothermic?

A

Endothermic

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3
Q

Lungs ventilated by

A

chest movement

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4
Q

How many heart chambers

A

3 or 4

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5
Q

Amniotic egg laid where?

A

on land, often in burrow

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6
Q

Reptiles are a paraphyletic group which means

A

They do not include all descendants of their most recent common ancestor

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7
Q

Most reptiles jaw muscles are protected by what?

A

outside cranium (brain box) and there are indentations into cranium

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8
Q

‘Anapsid’

A

No arch

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9
Q

Jaw movements can squeeze what?

A

Brain

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10
Q

Modern turtles have short jaws and

A

Toothless beaks

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11
Q

‘Synapsid’

A

single arch: modern mammals

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12
Q

‘Diapsid’

A

two arches: modern lizards, snakes and crocodiles

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13
Q

(Reptile order) What are testudines?

A

Turtles, terrapins and tortoises

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14
Q

What forms testudine shells?

A

Dorsal and ventral plats - bones on inside and scales on outside

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15
Q

Unlike snakes, testudine skin…

A

is moulted continually

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16
Q

Testudines are the only vertebrates with what enclosed by ribs?

A

Pectoral and pelvic girdles

17
Q

(Reptile order) What does tuatara mean?

A

Peaks on the back

18
Q

Tuatara have a third…

A

Eye covered with pigmented scales (unknown function)

19
Q

(Reptile order) What does squamata mean?

A

Scaled

20
Q

Squamata are covered in scales made of?

A

Keratin - reduces water loss

21
Q

Can squamata both both upper and lower jaws?

A

Yes. Snakes can swallow large prey

22
Q

Squamata hearts have…

A

3 chambers partially separating oxygenated blood from deoxygenated blood

23
Q

Males have paired penises with

A

Hooks

24
Q

How are snake’s organs arranged

A

Paired organs mostly lie one in front of the other to fit into narrow body

25
Q

Females guard eggs until

A

Hatching and in some species, continue to guard and communicate after hatching

26
Q

Sex determination by temperature?

A

Greater than 30 degrees males, lower than 30 are females

27
Q

What group are extinct reptiles?

A

Dinosaurs

28
Q

When did dinosaurs first appear?

A

230 million years ago

29
Q

‘Dinosaur’

A

Enormous lizard

30
Q

Early dinosaurs were split into 2 major orders

A

Saurischia )lizard hipped) and Ornithischia (bird hipped)