Atlantic salmon: Habitat to Habit

Question 1 · multiple choice

A rescue team is planning a habitat release for a healthy Atlantic salmon. Which setting fits best?

woodland, parks, orchards, and mature gardens forests, bamboo thickets, wetlands, and farmland edges cold rivers when young and spawning, open North Atlantic as adults ponds, marshes, lakes, and nearby open air

Question 2 · multiple choice

To avoid giving unsuitable food, which menu should an Atlantic salmon receive in a specialist wildlife centre?

fruit, nuts, insects, crayfish, eggs, and human food waste squid, fish, and carrion taken from the sea surface insects and small vertebrates aquatic insects when young and fish and crustaceans at sea

Question 3 · multiple choice

Which observation plan is best aligned with an Atlantic salmon's usual active period?

feeding and migration activity varies with season and river flow hunts mainly by day does not follow normal daylight cycles in permanent darkness hunts mostly by day near its burrow

Question 4 · multiple choice

Which movement clue would help identify an Atlantic salmon without using colour or sound?

walks long distances and stamps prey with rapid powerful kicks swims upstream using bursts, leaps, and precise current reading swims with body waves and walks slowly on tiny limbs walks, swims briefly, and strikes prey from close range

Question 5 · multiple choice

A young engineer studies an Atlantic salmon for a nature-inspired design. Which feature should be copied?

external gills and a finned tail allow lifelong aquatic breathing and movement mucus and fine cilia carry trapped food toward the mouth smell helps adults recognise chemical cues from their home river large forward-facing eyes judge distance while silk provides a safety line

Question 6 · multiple choice

Which parent-and-young scenario belongs to an Atlantic salmon?

a female guards tens of thousands of eggs and stops feeding until they hatch eggs are laid one at a time on milkweed leaves a single infant usually remains dependent on its mother for years females bury eggs in gravel nests called redds

Question 7 · multiple choice

Which observation accurately describes communication or cooperation in an Atlantic salmon?

mostly solitary at sea but gathers during migration lives socially and uses communal dung piles mostly solitary at sea but gathers at feeding or nesting areas often gathers where organic-rich sediment is available

Question 8 · multiple choice

Which environmental change is most directly linked to the normal activities of an Atlantic salmon?

disperses seeds and consumes many aquatic and land invertebrates moves ocean nutrients into rivers and feeds many predators connects distant ocean food webs and brings marine nutrients to islands controls large night-flying insects

Question 9 · multiple choice

How is an Atlantic salmon most likely to respond when escape becomes difficult?

retreats around the trunk and uses loud calls and drumming warns with hood, growl-like hiss, and controlled strikes uses speed, camouflage, and deep pools escapes through agile flight and nymphs use a sudden jet of water

Question 10 · true false

True or False: An atlantic salmon changes kidney and gill function when moving between fresh water and salt water.

True False