Worms Flashcards

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1
Q

Define flatworms

A

Worms with flat and thin bodies

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2
Q

What type of symmetry do flatworms have?

A

Bilateral

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3
Q

What is the simplest animal to have bilateral symmetry ?

A

Flatworms

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4
Q

Define parasite

A

Organism that feed off another organism(host)

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5
Q

What are tapeworm characteristics?

A

Are parasites
Live in intestines
Use hosts digested food
Don’t have digestive system

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6
Q

What are the body parts of a planarian ?

A
Eyespots
Mouth
Simple brain
Nerve cords
Feeding tube
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7
Q

What are characteristics of planarians?

A

Not parasite
Scavenger
Feeds off decaying material

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8
Q

What type of digestive system do planarians have?

A

2 way digestive system one opening

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9
Q

Define worm

A

A organism with a long, slender body ,bilateral symmetry, tissue and organs

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10
Q

What do eye spots do?

A

Allow worms to see light

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11
Q

How do planarian reproduce?

A

Asexually and sexually

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12
Q

How do planaria reproduce asexually?

A

Regeneration

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13
Q

What is regeneration asexual reproduction ?

A

Growing from a piece of the organism

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14
Q

How do planaria reproduce sexually?

A

They are hermaphrodites

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15
Q

What’s a hermaphrodite?

A

a organism that produce both egg and sperm

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16
Q

Define roundworms

A

Worms with Slender tune shaped. Bodies usually pointed at both ends

17
Q

Round worms are usually what?

A

Harmless but some are parasites

18
Q

How big are roundworms?

A

Many are microscopic

19
Q

How do roundworm reproduce ?

A

Sexually

20
Q

How do roundworms reproduce sexually?

A

Fertilization

21
Q

How do roundworms digestive systems work?

A

2 way 2 openings

22
Q

What is the advantage of a 2 opening digestive system?

A

Can eat even when not finished digesting