Organisms in class Reptilia share the characteristic of

1
Organisms in class Reptilia share the
characteristic of
2
breathing with lungs at all stages of their
life.having scales.laying internally
fertilized eggs.
3
Manatees are considered not to be as intelligent
as dolphins because
4
their brain is very smooth compared to a
dolphins.
5
This marine mammal are specialized hunters of
their local food source
6
Killer Whales
7
The greatest threat facing the polar bear is?
8
Global Warming
9
The polar bear is found near what area on Earth?
10
only the arctic circle
11
Toothed whales (dolphins) have _____ blowhole(s),
while baleen whales have _____ blowhole(s).
12
1, 2
13
What fins do sharks have that dolphins do not?
14
Pelvic Fins, Anal Fins, and 2nd dorsal fins
15
The common ancestor to all modern whales came from
16
land
17
Polar Bears and Sea Otters belong to this order?
18
Carnivora
19
One significant difference between seals and sea
lions is
20
The shape and function of their hip bones
21
Next to humans which species is the most widely
dispersed in the world
22
Orca (Killer Whale)
23
The main difference between a manatee and a
dugong is
24
Shape of their tail
25
Dolphins produce high pitched clicks to find
food. This adaptation is called
26
echolocation
27
Dolphin family groupings consist primarily of
28
females and their juvenile young only
29
Dolphins family structures are called
30
Pods
31
Human activities that have endangered or may
endanger marine mammals include
32
whaling.overfishing.fur hunting.
33
The marine mammals in order Sirenia include
34
manatees and dugongs
35
Whales, porpoises, and dolphins belong to order
____.
36
Cetacea
37
Seals and sea lions belong to order ____, but
have differences including that seals ____ and
sea lions ____.
38
Pinnepedia, lack ear flaps, have ear flaps
39
Marine mammal adaptations to the challenges of
living in the sea include
40
the mammalian diving reflex.myoglobin for
storing oxygen.breathing air to meet oxygen
demands.
41
Organisms in class Mammalia have characteristics
that include
42
that almost all give birth to live
young.nourishing their young with milk provided
by mammary glands.being homeothermic.
43
Adaptations to marine environments exhibited by
the various bird species include
44
webbed feet.the ability to fly underwater and
over wide expanses of water.bill adaptations,
such as the pelicans pouch.
45
The role birds play in marine ecosystems include
46
being predators and prey.providing nitrogen
compounds to the ocean.
47
Members of class Aves share the characteristic of
48
feathers and laying internally fertilized
eggs.forelimbs that are wings.
49
Marine reptiles include
50
sea snakes and 15 species of marine
lizard.saltwater crocodile.seven species of
marine turtle.
51

• Scientists classify organisms because

52

• it helps identify relationships between organisms
  and to avoid confusion.
• it requires them to clearly identify key
  characteristics of each organism.
• it allows researchers to always use an organisms
  common name.

53

• An organisms scientific name represents

54

• genus and species

55

• Name the 7 levels of classification.

56

• Kingdom
• Phylum
• Class
• Order
• Family
• Genus
• Sex

57

• Taxonomists determine into which taxa to classify
  an organism based on

58

• Anatomical features
• DNA, or genetic makeup

59

• Sponge larvae are more animal-like than adult
  sponges because

60

• theyre free-swimming organisms.

61

• Organisms in phylum Cnidaria include

62

• jellyfish.
• anemone.
• hard corals.

63

• Scientists think that ____ evolved during the
  Cambrian period, allowing vertebrates to become
  very successful predators.

64

• Jaws

65

• Organisms in class Chondrichthyes include ____
  and ____.

66

• sharks, rays

67

• Class Chondrichthyes characteristics include

68

• cartilaginous skeletons.
• No swim bladder

69

• Traits that make sharks and rays successful
  predators include

70

• a light cartilage skeleton
• backward-pointing denticles and lateral lines
• ampullae of Lorenzini.

71

• Most sharks and rays fertilize their eggs

72

• internally.

73

• The largest shark is the ____, which eats ____.

74

• Whale shark, plankton and small fish

75

• How many people, on average are killed via shark
  attack each year?

76

• 5

77

• A sharks intestine is shaped like a

78

• spiral staircase

79

• A caudal fin is used for

80

• Propulsion

81

• The pectoral fin is used for

82

• steering and stopping

83

• Sharks detect variations in water pressure and
  vibrations with this adaptation

84

• Lateral Line

85

• Great White Shark teeth are most closely related
  to what common household item?

86

• A saw

87

• Sharks that lay eggs are called

88

• oviparous

89

• Hammerhead sharks give live birth, this is called
  being

90

• viviparous

91

• The ampullae of lorenzini are used to

92

• detect electrical signals

93

• Sharks, like sea otters, are vital for an
  ecosystems survival.  That makes them a

94

• keystone species

95

• Approximately how many sharks are killed each
  year by humans

96

• 100 million

97

• The six-kingdom system divides life into

98

• Six Kingdoms only

99

• Prokaryotes are characterized by cells that are
  structurally ______ compared to the cells found
  in the organisms of other kingdoms.

100

• simpler

101

• Cyanophytes are crucial to life because
  scientists think that

102

• Photosynthesis evolved in cyanophytes and they
  created the oxygen in the atmosphere.

103

• Taxonomists define algae as those organisms that

104

• That belong in one of seven specific phyla in
  domain Archaea.

105

• ______ make up phylum Bacillariophyta

106

• Diatoms

107

• ______ make up phylum Dinophyta

108

• Dinoflagellates

109

• The presence of chlorophyll a and b in green
  algae leads some scientists to think that

110

• Land plants may have evolved from green algae.

111

• The largest brown algae is _____. It is
  important because_____.

112

• Kelp, it is the foundation of temperate coastal
  ecosystems.

113

• The greatest challenge for a plant to adapt to
  living in the sea is.

114

• Water Salinity

115

• The two major cell types in a sponges tissues
  are

116

• Collar cells and amoebocytes

117

• Characteristics of organisms in class
  Osteichthyes include

118

• Bony skeletons
• Scales and swim bladders

119

• In most bony fish, eggs are fertilized

120

• externally

121

• Coastal ecosystems are generally highly
  productive because

122

• They benefit from nutrient-rich runoff from land
• Benthic organisms can live in the upper photic
  zone
• Plants provide shelter.

123

• Estuaries contribute to the productivity of
  surrounding marine ecosystems by..

124

• Providing a nursery for juvenile species
• Providing a steady stream of nutrients.

125

• Seagrass ecosystems differ from other
  halophyte-based ecosystems because

126

• The dont require freshwater
• Can exist in deep water
• Seagrasses provide food for ecosystem inhabitants

127

• The most diverse ecosystems on Earth are

128

• Coral Reefs

129

• Coral ecosystems require water that is in
  moderate motion and free of nutrients because

130

• Water motion keeps sediments from accumulating on
  the coral.
• The presence of nutrients allows plankton to grow
• The presence of nutrients allows competitive
  algae to grow.

131

• Deep-sea ecosystems that have primary
  productivity associated with chemicals emerging
  from the Earth include

132

• Cold seeps
• Hydrothermal vents