Common hermit crab: Wild-Life Detective

Question 1 · multiple choice

A young wildlife researcher wants to observe a Common hermit crab in the wild. Which location is the best match?

rock pools, rocky coasts, and shallow seabeds cool moist forests of southeastern Australia tropical forest edges, grassland, farms, gardens, and towns humid West African forest floor and burrows

Question 2 · multiple choice

A keeper is designing a natural feeding puzzle for a Common hermit crab. Which menu best matches its wild diet?

mainly leaves, with some fruit and flowers algae, carrion, detritus, and small animals mostly medium-sized birds captured in flight marine algae scraped from rocks

Question 3 · multiple choice

A field team plans its watch around the normal routine of a Common hermit crab. Which timing is most sensible?

active mainly at night often feeds when currents concentrate plankton forages day or night with tides workers remain active around the clock inside protected tunnels

Question 4 · multiple choice

[Image needed: a clear, unlabeled side-view photograph of a Common hermit crab moving naturally in its wild habitat, with its whole body visible and no captions.] Which movement description is accurate for a Common hermit crab?

climbs walls and ceilings with adhesive toe pads flies through water with broad triangular fins walks through covered galleries between food and nest walks on jointed legs while carrying a borrowed shell

Question 5 · multiple choice

Which feature-and-function explanation best describes a useful adaptation of a Common hermit crab?

a soft twisted abdomen fits inside empty snail shells fires a focused jet of water to knock insects from leaves a flexible body and feeding tentacles process large amounts of sediment a long prehensile tongue helps strip leaves from thorny branches

Question 6 · multiple choice

Which description correctly explains how a Common hermit crab begins or cares for the next generation?

pups are born in a den and cared for by several pack members females carry eggs beneath the abdomen until larvae hatch a single calf can stand and walk soon after birth lays an egg enormous relative to the female’s body size

Question 7 · multiple choice

Which social pattern best describes how a Common hermit crab interacts with others of its kind?

pairs defend feeding territories during breeding mostly territorial, though groups gather where food is abundant may queue and swap shells when a better empty shell appears usually solitary, sometimes concentrating in shrinking pools

Question 8 · multiple choice

What useful role does a Common hermit crab play in its ecosystem?

supports algae and moth communities in its fur and recycles canopy nutrients regulates populations of flying birds in natural and urban habitats grazes algae and moves marine nutrients onto land cleans carrion and recycles organic material

Question 9 · multiple choice

A predator approaches a Common hermit crab. Which response is the most realistic?

withdraws into the shell and blocks the entrance with a claw runs into dense cover and freezes quietly inflates its body and releases toxin when seized uses pincers first and a relatively mild sting if necessary

Question 10 · true false

True or False: A common hermit crab must change shells as it grows because it cannot make the snail shell itself.

True False