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