A) Eye color B) Claw size C) Leg length D) Body shape
A) True crabs have a reduced abdomen tucked under the cephalothorax B) False crabs are larger C) True crabs have more legs D) False crabs live only in freshwater
A) Star-shaped B) Long and narrow C) Round and bulbous D) Broad and flattened
A) Prosoma B) Carapace C) Cephalothorax D) Abdomen
A) Pleopods B) Uropods C) Pereiopods D) Chelipeds
A) Six B) Three C) Four D) Five
A) Swimming B) Digging C) Reproduction D) Camouflage
A) By the shape of the abdominal flap B) By the color of the carapace C) By the size of the claws D) By the length of the legs
A) Male crab B) Hermaphrodite crab C) Juvenile crab D) Female crab
A) Male crab B) Female crab C) Hybrid crab D) Immature crab
A) Food digestion B) Waste removal C) Sensory perception D) Oxygen extraction
A) Within the gill chambers beneath the carapace B) On the legs C) On the abdomen D) Externally, attached to the body
A) Protection B) Respiration C) Locomotion D) Digestion
A) Paddle-like swimming legs B) Brightly colored carapace C) Long legs relative to their body size D) Large, symmetrical claws
A) King crabs B) Ghost crabs C) Hermit crabs D) Stone crabs
A) Hermit crab B) Fiddler crab C) Snow crab D) Box crab
A) The ability to climb trees B) One greatly enlarged claw in males C) Brightly colored walking legs D) A flattened, shovel-like carapace
A) Pea crab B) Coconut crab C) Decorator crab D) Mud crab
A) Osmoregulation B) Ecdysis C) Regeneration D) Metamorphosis
A) To reproduce B) To grow larger C) To shed parasites D) To change color
A) A regional term for a certain type of true crab B) An accurate descriptor, it's a type of crab. C) They were once classified as crabs but have since been reclassified. D) A misnomer, they are more closely related to spiders and scorpions.
A) Internal organ structure B) Claw shape C) Carapace ornamentation D) Leg structure
A) Branchial ridges B) Epipods C) Marginal setae D) Rostral spines
A) Carnivorous B) Herbivorous C) Detritivorous D) Omnivorous
A) Ability to absorb oxygen through their skin B) Specialized lungs C) Modified gill chambers D) Waterproof carapace
A) Feeding B) Defense C) Swimming D) Sensing vibrations
A) Hermit crabs B) Spider crabs C) King crabs D) Shore crabs
A) Cyprid B) Zoea C) Megalopa D) Nauplius
A) Snow crab B) Blue crab C) Red king crab D) Dungeness crab
A) Primarily through vocalizations B) Only through tactile signals C) Through visual and chemical signals D) They don't communicate |