Animal Behavior

The Great crested grebe form mated pairs and are monogamous and territorial. Which one describes their courtship ritual?

• the mates give clumps of water plants to one another

• the mates perform for females in leks

• the mates decorate nests

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The great crested grebe uses this technique to help raise its young:

• the grebes do not care for their young

• the young swim with and are carried by adults

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The satin bowerbird usually has more than one mate. The bowerbird uses this technique to attract a mate:

• males construct arched bowers out of twigs, grasses, and decorative items such as bottle caps

• male attaches to the bloodstream of its mate

• the male emits pheromones

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The blackdevil anglerfish lives his life as a parasite. Which one describes the blackdevil anglerfish?

• female lays one to two eggs

• the male attaches to the body of his mate and takes nutrients directly from her bloodstream.

• the male emits pheromones

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The purple tube sponge is hermaphroditic which means they produce both egg and sperm cells. Which describes their reproductive method?

• the sponge emits pheromones to attract a mate

• the sponge uses songs to attract a mate

• the egg and sperm are released as clouds into the water. If fertilized, eggs develop into free-swimming larvae.

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NGSS.MS-LS3-2

fThe American burying beetle emits pheromones to attract females after he finds a carcass. Which statement is NOT true?

• the males congregate on leks in early spring.

• males and females compete among themselves for the carcass.

• the largest individual of each sex usually wins.

• the successful pair then buries the carcass together in preparation for egg-laying.

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Why do fruit flies reproduce rapidly, producing hundreds of offspring in just a little more than a week?

• the lifespan of a fruit fly is short.

• females reach maturity at six years, males not until 8 years.

• because males are busy defending their territories in leks

Which statement about the African elephant is false?

• the females have the longest gestation period (how long they are pregnant) out of any mammal (22 months)

• females generally give birth to one calf

• male calfs leave the herd at 12 to 15 years of age

• male calfs leave the herd at six weeks of age

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Sage grouse congregate on leks in early spring. Which is NOT a display method of the sage grouse?

• strutting and fanning his tail

• inflating skin sacs in their necks that make a loud "bubbling" sound when air is thrust out.

• emitting pheromones (chemical signals)

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The hammer-headed fruit bat congregate in leks. They display for hovering females by flapping their wings and producing a "croaking" sound using their enlarged nasal chambers.

• true

• false, bats do not congregate in leks

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