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Invertebrate Zoology > Oligochaeta (Terrestrial Worms) > Flashcards

Oligochaeta (Terrestrial Worms) Flashcards

1
Q

Nervous System in Oligochaeta

A

Single Ventral Nerve Chord, Giant Axons, Photoreceptors (no eyes), Chemoreceptors

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2
Q

Digestive System of Oligochaeta

A

Muscular Pharynx, Crop -> Gizzard -> Intestine (U shaped folding for increased surface area)

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3
Q

Respiration in Oligochaeta

A

Similar to Polychaetes, hemoglobin in blood, hypoxia tolerant (little oxygen needed)

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4
Q

Excretion in Oligochaeta

A

Waste drawn into ciliated Nephrostome (current made from beating cilia), Passed through loops of nephridium, expelled through nephridiophore, easily dehydrated

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5
Q

Reproduction in Oligochaeta

A

Simultaneous Hermaphrodites, Egg case excreted by clittelum, egg and sperm injected into egg case

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6
Q

Clittelum

A

Thick section on worm - secretes mucus for reproduction, nutrients for egg and cocoon

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Invertebrate Zoology (21 decks)

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