Amphibians

Question 1

Represent the transitional stage of vertebrates

Answer 1

Amphibians

Question 2

Recent fossils find show __________ with tetrapod legs to be fully aquatic which suggest that leg
developed while the animal remained a fully underwater animal.

Answer 2

Acanthostega

Question 3

Sister group of tetrapods

Answer 3

Lobe-finned

Question 4

Period wherein climate was uniformly warm and wet which give rise to early amphibians

Answer 4

Carboniferous Period

Question 5

Give the 3 adaptations of amphibians during Carboniferous

Answer 5

BED

1. Bodies became flatter for moving in water.
2. Developed webbing on hindlimbs for better swimming.
3. Early salamanders developed weaker legs and the tail became better developed

Question 6

The _________ and the ear are redesigned to improve sensitivity to airborne sound

Answer 6

Olfactory Epithelium

Question 7

Larvae of amphibians depends on _______ for respiration

Answer 7

Gills

Question 8

Body temperature depends on the environment and restricts range

Answer 8

Ectothermic

Question 9

11. Frog capable for Gastric Brooding

Answer 9

Darwinian Frog

(hindi barwinian) search mo

Question 10

They are the Caecilians (Apoda)

Answer 10

Order Gymnophiona

Question 11

They are the salamanders (Urodela)

Answer 11

Order Caudata

Question 12

About 160 living species of elongate limbless, burrowing and live in tropical forests in South
America, Africa, and Southeast Asia.

Answer 12

Caecillians

Question 13

15. Found mostly in northern Temperate Regions and mostly are small while the forelimbs and
    hindlimbs are about equal in length

Answer 13

Salamanders

Question 14

Food of salamanders are rich in

Answer 14

Protein

Question 15

T or F.

Salamanders store much fat or glycogen

Answer 15

False

Question 16

Most salamanders fertilize eggs internally, female picks up a _________ that has been deposited on
a leaf or stick

Answer 16

Spermatophore

Question 17

Salamanders have _______ in their skin that exchange both oxygen and carbon dioxide

Answer 17

Extensive Vascular Net

Question 18

Preservation of pre-adult features into adulthood

Answer 18

Paedomorphosis

Question 19

21. Non-metamorphic species that retain gills are ________

Answer 19

perrenibranchiates

Question 20

_________ like the mudpuppy have never been observed to metamorphose

Answer 20

Obligate perrennibranchiate

Question 21

23. In Mexico and U.S , __________ may stay in a gilled stage as an axolotl

Answer 21

Ambystoma tigrinum

Question 22

Common mudpuppy

Answer 22

Necturus maculosus

Question 23

Axolotls treated with _________ will metamorphose artificially

Answer 23

Thyroid hormone

Question 24

________ appears to be the controlling factor in natural populations

Answer 24

Pituitary Gland

Question 25

They are the Frogs and Toads

Answer 25

Order Anura

Question 26

Contains toads with thicker skin and prominent warts

Answer 26

Family Bufonidae

Question 27

Common larger frogs in North America

Answer 27

Family Ranidae

Question 28

Frogs and Toads known from ________

Answer 28

Jurassic Period

Question 29

Eggs hatch into _______ with a long, finned tail, no legs, internal and external gills and specialized mouthparts

Answer 29

tadpole

Question 30

32. Includes the tree frogs

Answer 30

Family Hylidae

Question 31

33. Specialized pigment cells

Answer 31

Chromatophore

Question 32

Located at Uppermost with yellow, orange or red pigments

Answer 32

Xantophore

Question 33

35. At middle layer with silvery light-reflecting that acts as mirror

Answer 33

Iridophore

Question 34

36. Containing black or brow melanin

Answer 34

Melanophore

Question 35

37. Give 3 reasons why Anurans population is currently decreasing

Answer 35

1. Agricultural Walt 2. Climate Change 3. Predation of *Bufo marinus*

Question 36

Frogs use this in hibernation for energy

Answer 36

Fats

Question 37

41. Type of integumentary glands that secretes mucous

Answer 37

Mucous Gland

Question 38

42. Also a type of integumentary glands which produce a whitish, watery poison

Answer 38

Serous Gland

Question 39

This type of frog in South America secrete highly toxic skin poisons

Answer 39

Dendrobatid Frogs

Question 40

44. Give the 3 Respiratory Exchange for Amphibians

Answer 40

1. Cutaneous Breathing 2. Buccal Breathing 3. Lungs

Question 41

47. Air contains about _____ times more oxygen than water

Answer 41

20

Question 42

48. A tendon found in ankle

Answer 42

Achilles Tendon

Question 43

49. How may chambers does the frog’s heart have

Answer 43

3

Question 44

50. Blood from the body enters through the _________ and _________

Answer 44

Sinus Venosus and Right Atrium

Question 45

51. Blood from the lungs enters the ______

Answer 45

Left Atrium

Question 46

52. Deoxygenated blood goes primarily in the _______

Answer 46

Lungs

Question 47

53. Oxygenated blood goes primarily in the _______

Answer 47

Body

Question 48

54. Blood separation is aided by the _________ which divides the systemic and pulmonary flows in the _________.

Answer 48

Spiral Valve Conus Arteriosus

Question 49

56. The free end of the tongue is ________ a sticky secretion adheres prey

Answer 49

Glandular

Question 50

57. Give the 3 parts of the brain

Answer 50

**forebrain (telencephalon)** - smelling **midbrain (melencephalon)** - vision **hindbrain (rhombencephalon)** - hearing and balance

Question 51

58. Perceives hearing and balance

Answer 51

Hindbrain (Rhombencephalon)

Question 52

59. Perceives vision

Answer 52

Midbrain (Mesencephalon)

Question 53

60. Interprets sense of smell

Answer 53

Forebrain (Telencephalon)

Question 54

The hindbrain is divided into an _______ and ______

Answer 54

Cerebellum Medulla

Question 55

63. It is the enlarged anterior end of the spinal cord and center for auditory, reflexes, respiration, swallowing and vasomotor control

Answer 55

Medulla

Question 56

64. Passes vibrations to the inner ear

Answer 56

Tympanic Membrane

Question 57

65. Found in eyelids in Anurans for protection

Answer 57

Nictitating Membrane

Question 58

66. Evolved to keep the eye moist, free of dust and protected

Answer 58

Lacrimal gland (eyelids) di ko sure di ko ma basa

Question 59

67. What is the difference between fish and frogs eye

Answer 59

Fish eyes - far Frogs eyes - near

Question 60

68. When the eggs are mature, females enter the water and the males clasp them in ______

Answer 60

Amplexus