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Which body part of octopus is at the center point of the arms.

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head
leg
neck
mouth


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Octopuses have no internal or external ________ (although some species have a vestigial remnant of a shell inside their mantles), allowing them to squeeze through tight places.

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kidney
skeleton
heart
liver


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How many octopus species are recognized ?

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around 100
around 200
around 300
around 400


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Which body part of Octopus contains the copper-rich protein hemocyanin for transporting oxygen.

Blood
Skin
Eyes
Legs


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Adult octopuses usually weigh around ________ (33 lb), with an arm span of up to 4.3 m (14 ft).

15 kg
20 kg
25 kg
30 kg


Adults usually weigh around 15 kg (33 lb), with an arm span of up to 4.3 m (14 ft). The largest specimen of this species to be scientifically documented was an animal with a live mass of 71 kg (156.5 lb).

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Octopus have no _________ and will not be able to maintain their shape out of water.

bones
heart
liver
kidney


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Common octopuses will collect ___________ shells and other objects to construct fortresses, or "gardens," around their lairs.

Besen
Armesen
Crustacean
Ducan


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About how many species of octopuses (Octopoda) are alive today ?

100
200
300
400


Theses species are are divided into two groups, the Cirrina and the Incirrina

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What is the average litter size for Octopus ?

80
150
210
290


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What is the favourite food of Octopus ?

Fishes
Crabs
Crocodile
Jelly


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