Atlantic horseshoe crab: Built to Survive

Question 1 · multiple choice

A camera trap is being set for an Atlantic horseshoe crab. Which habitat description gives it the best chance of success?

open savanna, semi-desert, and dry grassland warm coral reefs with host sea anemones sandy or muddy Atlantic coasts, bays, and estuaries films of water around moss, lichen, soil, and freshwater plants

Question 2 · multiple choice

An Atlantic horseshoe crab follows its usual feeding pattern. Which food combination should it seek?

insects, grubs, worms, fruit, and small animals mainly fruit, plus insects and small animals worms, insect larvae, crustaceans, and small fish worms, small molluscs, crustaceans, and organic material

Question 3 · multiple choice

When should a documentary crew expect the most natural activity from an Atlantic horseshoe crab?

often moves and spawns with tides, especially at night basks by day and hunts in water often hunts separately at night after schooling by day often hides by day and forages at night

Question 4 · multiple choice

Which set of movements belongs to an Atlantic horseshoe crab?

swims with a powerful tail but moves awkwardly on land walks on jointed legs and swims upside down when young swims with a tall dorsal fin and wide sweeping turns runs rapidly on long legs

Question 5 · multiple choice

Which body feature gives an Atlantic horseshoe crab a practical survival advantage?

fused beak-like teeth crush shells and the stomach inflates with water different worker sizes cut leaves, defend trails, garden fungus, and remove waste book gills exchange gases and can function briefly while kept moist on land rough tongue papillae help scrape meat from bones and groom fur

Question 6 · multiple choice

Which family-life detail is accurate for an Atlantic horseshoe crab?

releases eggs and sperm into the water during synchronised spawning a calf develops for about twenty-two months before birth pups are born in a sheltered den and taught to swim later females bury clusters of eggs in beach sand

Question 7 · multiple choice

Which social clue belongs to an Atlantic horseshoe crab?

gathers in large seasonal spawning groups pairs share nesting duties and may use the same site repeatedly mostly solitary and gathers at some winter dens mostly solitary and den-based

Question 8 · multiple choice

Which food-web connection correctly involves an Atlantic horseshoe crab?

aerates soil and consumes many soil-dwelling insects eggs feed migrating shorebirds and adults disturb seafloor sediment disperses large forest seeds far from parent trees predates aquatic invertebrates and small vertebrates

Question 9 · multiple choice

An Atlantic horseshoe crab cannot simply disappear. Which combination helps it avoid or survive danger?

sprints, changes direction rapidly, and kicks forward dives among stinging tentacles when threatened hard shell, spines, and a tail used to right the body enters cryptobiosis rather than fighting or fleeing

Question 10 · true false

True or False: An atlantic horseshoe crab is more closely related to spiders and scorpions than to true crabs.

True False