North American beaver: Animal Science Quest

Question 1 · multiple choice

A habitat sign describes the home of a North American beaver. Which description belongs on it?

tropical sandy seabeds, lagoons, and coral reefs Antarctic sea ice and surrounding ocean streams, ponds, wetlands, and forested waterways dry woodland, shrub, and cultivated areas with trees

Question 2 · multiple choice

What food choice best fits the teeth, bill, or feeding tools of a North American beaver?

insects, snails, worms, small animals, pet food, and scraps algae, carrion, detritus, and small animals insects, spiders, and small vertebrates bark, twigs, leaves, and aquatic plants

Question 3 · multiple choice

Which daily routine is most typical for a North American beaver?

usually active from evening through night hunts by day in warm conditions hunts by day, often when flying prey is active warms in sun before and after cold-water feeding dives

Question 4 · multiple choice

Which action sequence best matches a moving North American beaver?

flies forward, backward, sideways, and can hover swims with webbed hind feet and steers using a flat tail dives in a high-speed stoop and strikes or grabs prey swims by waving its flattened tail while legs trail backward

Question 5 · multiple choice

A close observation reveals one feature especially suited to a North American beaver. Which is it?

a streamlined bill and eye adjustments help judge prey through refracting water pressure sensors around the jaws detect tiny ripples made by prey ever-growing orange incisors contain iron-rich enamel for cutting wood special electric organs produce weak sensing pulses and powerful hunting shocks

Question 6 · multiple choice

What is the best description of a young North American beaver's start in life?

one chick is raised slowly after a lengthy incubation lays paired hard-shelled eggs attached to a protected surface usually gives birth to one well-developed pup after internal development kits are born furred and remain with their family for about two years

Question 7 · multiple choice

Which social arrangement fits a North American beaver rather than the distractors?

family colonies maintain lodges, dams, and food stores mostly solitary but may gather around food mostly solitary but tolerates others on the same plant breeds in colonies with many nests on one tree

Question 8 · multiple choice

Which cause-and-effect chain correctly starts with a North American beaver's normal behaviour?

consumes many invertebrates but can disrupt ecosystems where introduced creates wetlands that provide habitat for many other species cleans carrion and recycles organic material controls forest-floor invertebrates and feeds larger predators

Question 9 · multiple choice

A researcher keeps a safe distance because a North American beaver may do what when cornered?

ejects sticky tubes or internal organs in some species and later regrows them groups together and dives away rather than fighting large predators slaps the water with its tail to warn the colony changes colour, flattens the body, hisses, and bites

Question 10 · true false

True or False: A north american beaver a transparent third eyelid works like swimming goggles underwater.

True False