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Flashcards in Simple Invertebrates Deck (40):
1

Which is an invertebrate?
A. Grasshopper
B. Cow
C. Man
D. Whale

A. Grasshopper

2

Some invertebrates eat food through their mouths. Others absorb food through their what?

Tissue

3

Invertebrates have three basic body plans, or types of what?

Symmetry

4

What are the three basic body plans for invertebrates?

Bilateral Symmetry (2 halves)

Radial Symmetry (Spokes from center)

Asymmetrical (none)

5

List 2 functions of neurons

Sense environment

Carry messages around body to control an animals actions

6

Ganglion

A concentrated mass of nerve cells

7

Gut

A pouch where food is digested

8

Coelem

The body cavity that surrounds the gut

9

Are sponges simple or complicated?

Simple

10

Why are sponges considered animals not plants?

They can't make their own food (heterotrophs)

11

Describe the special way sponges bring oxygen and food into their bodies

A sponge sweeps water into its body through pores

12

If a part of the sponge breaks off the sponge can what?

Regenerate

13

Do sponges reproduce sexually or asexually?

Both

14

What traits do all cnidarians have in common?

Can regenerate

15

What are the 2 body forms of cnidarians?

Medusa and Polyp

16

What is the difference between a medusa and a polyp?

Medusa - swim freely
Polyp - attach to surface

17

Polyp or Medusa

Jellyfish

Medusa

18

Polyp or Medusa

Hydrozoan

Polyp

19

Polyp or Medusa

Sea Anemone

Polyp

20

What polyps build massive underwater reefs?

Corals

21

What distinguishes flatworms from other worms?

They are the simplest worms

22

All flatworms have what?

Bilateral symmetry

23

What are the bumps on the side of a a flatworms head?

Sensory lobes

24

What is a roundworm's body shaped like?

Piece of spaghetti

25

How can round worms be helpful?

Break down dead tissues of plants which make soil

26

What worms do you see after a rainfall?

Earthworms

27

Use tentacles to grab food
A. Snails and Slugs
B. Octopuses and Squids
C. Clams and Oysters

B

28

Use grills to filter food
A. Snails and Slugs
B. Octopuses and Squids
C. Clams and Oysters

C

29

Use a radula to scrape food
A. Snails and Slugs
B. Octopuses and Squids
C. Clams and Oysters

A

30

Mollusk have a complex (blank) to control breathing, movement, and digestion

Ganglia

31

Octopuses and squids have the most advanced (blank) of all invertebrates

Nervous system

32

Describe an open circulatory system

Fluid isn't completely contained in the vessels

33

Describe a closed circulatory system

A heart circulates blood through a network of vessels that form a closed loop

34

Mantle

A layer of tissue that covers the visceral mass

35

Shell

Protects some mollusks from predators

36

Foot

Helps the animal move

37

Visceral mass

Gills, guts, and other organs

38

Annelid worms are often called what?

Segmented worms

39

What are 2 ways that annelid worms are more complex than the other worms?

Closed circulatory system
Complex nervous system

40

How do earth worms help gardeners?

They eat dead plant and animal matter
They eat material in the soil