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