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1st Period, Life Sciences Honors > Exam 7 - Invertebrates > Flashcards

Exam 7 - Invertebrates Flashcards

1
Q

Define bilateral Symmetry and give examples

A

A divisible bodily symmetry that yields only 2 mirror images when split down a central plane

bi = two, lateral = to the side

Ex: more complex organisms like humans, dogs, cats, birds, worms, etc.

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2
Q

Define radial Symmetry and give examples

A

A bodily symmetry that when divided can produce many mirror images do its circular form

radial = circular

Ex: less complex organisms like jellyfish, sponges, starfish, sea anemone, sea urchin

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3
Q

What are invertebrates?

A

Animals that lack a backbone or notochord

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4
Q

What are endotherms and give some examples

A

warm-blooded animals that can maintain their internal body temperature on their own; not dependent upon their enviornment

(Endo = inside, within) therm = temperature

Mammals and Birds: Humans, dogs, whales, eagles, owls, chickens

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5
Q

What are ectotherms and give some examples

A

cold-blooded animals that rely upon their enviornment for their internal body temperature; cannot self-regulate body temperature

ecto - outside/external, therm - temperature

Reptiles, amphibians, fish, invertebrates = sharks, frogs, clownfish, lizard, snake, alligator, mollusks, arthropods

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6
Q

What is the phylum name for sponges?

A

Porifera

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7
Q

What is the phylum name for jellyfish, sea anemone, corals?

A

Cnidarians

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8
Q

What is the phylum name for segemented worms like earthworms?

A

Annelida

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9
Q

What is the phylum name for sea stars, sea urchins, sea cucumbers?

A

Echinoderms

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10
Q

What is the phylum name for octupi, clams, nautilus, snails, etc.?

A

Mollusca (mollusks)

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11
Q

What are gastropods?

A

mollusks like snails, slugs, crawl on their stomach

Gastro - stomach , pod - foot

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12
Q

what are cephalopods?

A

mollusks like octopus and squids that have their feet attached to their head

cephalo - head, pod - foot

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13
Q

What are bivalves

A

Mollusks that have a two-pieced, hinged shell such as clams, oysters, and scallops.

bi - two, valve - folding door

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14
Q

What is an exoskeleton?

A

A hard, external skeleton found in mollusks and arthropods typically made of a material called “Chitin”

exo - outside,

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15
Q

What phylum are insects, crustaceans, spiders, scorpions, etc.?

A

Arthropods

Arthro - joint, pod - foot.

Remember, key characteristic of arthropods is jointed appendages

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16
Q

How do octopi protect themselves?

F

A

They hide in cracks, camouflage, and color changing.

Chromatophores - pigment cells for camouflaging

F

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17
Q

What are chromataphores?

A

Cells containing pigment, specially one that produces temporary color.

Squids and Octupi have these cells.

F

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18
Q

How many tentacles/arms does an octopus have?

A

8

C-7

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19
Q

what is the order of a worms digestive system

D

A
  1. Lip (mouth)
  2. Pharynx
  3. Esophagus
  4. Crop
  5. Gizzard
  6. Intestine
  7. Anus
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19
Q

What is a jellyfishs outside layer called?

C

A

epidermis

20
Q

What is the muscular tube that planarians use to eat called?

F

A

Pharynx.

F

21
Q

Definition of ventral.

A

Towards chest or front of body.

a

22
Q

What is a worm’s outer protective covering that provides protection and moisture called?

A

cuticle

23
Q

Where does cindarians usally live?

A

The ocean

C-7

24
Q

What is a stimulus?

A

Something that causes a reaction in the organism.

Nervous stystem (brains, ganglion) recieve stimuli, and form a response

F

25
Q

What is a cephlapod?And give some examples

A

A type of mollusk with its head connected to its feet. Some examples are squids and octipi.

Cephla-head pod-foot
so the name is head-foot

26
Q

What is a ganglia and which organisms that we’ve talked about have it?

D

A

ganglia: simple brain
worms and planarians

D

27
Q

Definition of dorsal.

A

Towards back of body.

a

28
Q

anterior

A

A

towards the top or head

29
Q

What is the posterior?

A

towards tail, backend, or “butt” of the body

30
Q

What is the medial?

A

towards the middle of the body

31
Q

What is the lateral?

A

towards the sides of the body

32
Q

What is a example of a animal with a closed circulatory system.

D.14

A

A Worm, human, bird, reptile, etc.

also could be humans, mammles, birds, etc..

33
Q

Define an insect

B

A

Most have 6 legs and live on land. Insects are the abundant animal on the planet

(athropods)

B

34
Q

what is an exoskeloton

A

A

a hard outer layer that protects arthropods (made of chitin)

35
Q

What are jointed appendages for?

A

A

Appendages can be used for a variety of things like walking, swimming, sensing or chewing.

36
Q

What is an open circulatory system?

A

Blood not contained in vessels

37
Q

Incomplete metamorphasis

C

A

The arthropod looks roughly the same after each molt/stage of development

38
Q

What internal tubes are oxygen and carbon dioxide transported through in insects?

E

A

Trachea

39
Q

What do spiracles do?

E

A

They pump air in and out of the trachea of insects…. like gills

E

40
Q

Where do crustaceans live?
What are some examples of them?

B

A

Crustaceans live in the ocean or freshwater.
Some examples includes lobster, crabs, and pill bugs

41
Q

what describes the type of arthropods that have distinct body sections used for various purposes

A

A

segmented body

42
Q

Although there are many classes of arthropods, most can be classified

B

A

Insects, Crustaceans, Chelicerates, Myriapods, Trilobites

43
Q

Ventral

A1

A

front of the body, “chest”

A1

44
Q

Dorsal

A1

A

Back of the body

A1

45
Q

posterior

A1

A

Towards Tail, butt and down

A1

46
Q

Anterior

A

Head or top of body

A1

47
Q

Cephalopoda

A1

A

(Head-Foot), without shell, tentacles, marine

squid octopi

A1

48
Q

The nose is _____ to the back of the head

A1

A

ventral

A1

1st Period, Life Sciences Honors (10 decks)

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