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