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Biology 11 > Arthropods & Echinoderms > Flashcards

Arthropods & Echinoderms Flashcards

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1
Q

3 Common Characteristics of Arthropods

A

Tough exoskeleton, jointed appendages, segmented body

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2
Q

Chitin

A

Material that makes exoskeleton

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3
Q

4 Purposes of Exoskeleton

A
  1. Body support
  2. Protection of soft body parts
  3. Attachment point for muscles
  4. Prevents water loss
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4
Q

3 Segments of Arthropod

A

Head, Thorax (contains internal organs), abdomen (posterior part of the body)

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5
Q

Cephalothorax

A

Arthropod with head and thorax fused together.

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6
Q

3 Ways of Respiration in Arthropods

A

Gills, Book gills/Book Lungs, Tracheal Tubes.

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7
Q

Spiracles

A

Air enters and leaves through here, leads to tracheal system

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8
Q

Type of Circulation in Arthropods

A

Open Circulatory System

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9
Q

Types of Mouthparts in Arthropods

A

Pincers, Fangs, Sickle-shaped jaws

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10
Q

Malpighian Tubules

A

Organ to dispose of ammonia

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11
Q

Nervous System of Arthropods

A

Well developed.

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12
Q

Compound Eyes (How Do They Detect Stimuli?)

A

Detects color and motion, more than 2000 lenses

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13
Q

Reproduction (Arthropods)

A

Internal
Male deposits sperm packet picked up by female
External: Eggs are released, males shed sperm around eggs.

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14
Q

4 Subphyla of Arthropods

A

Trilobita (extinct), Chelicerata (Spiders, scorpions, mites, ticks), Crustarea (crabs, crayfish, lobsters), Uniramia (millipedes, centipedes, insects).

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15
Q

Incomplete Metamorphosis Cycle

A

Egg to Nymph

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16
Q

Complete Metamorphosis Cycle

A

Egg, Larva, Pupa, Adult

17
Q

Ecological Significance of Arthropods

A

Source of food
2/3 of flowering plants depend on arthropods for pollination

18
Q

Symbiotic Relationships of Arthropods

A

Bull horn Acacia tree/ants
Fish and Shrimp

19
Q

Economical Importance of Arthropods

A

Silkworm, honey, food, medicine (chitin used to dress wounds and make thread), agriculture

20
Q

Symmetry of Echinoderms

A

5 part radial symmetry

21
Q

Examples of Echinoderms (6)

A

Sea Stars
Brittle Stars
Sea Urchines
Sand Dollars
Sea Cucumbers
Sea Lilies

22
Q

Feeding (Echinoderms)

A

Carnivores, use tube feet to open shells and enzymes to digest prey.

23
Q

Respiration (Echinoderms)

A

Skin gills

24
Q

Nervous System (Echinoderms)

A

Nerve ring around mouth, radial nerves in arms. Clustered eyespots

25
Q

Reproduction (Echinoderms)

A

Gametes shed into open water. Some hermaphrodites

26
Q
A

Biology 11 (4 decks)

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