Insect communication and behaviour · seed 1 · A4, ink-friendly. The answer key prints on its own page for grown-ups.
به انگلیسی

How insects talk without words

Science · Insects & Minibeasts · ages 9-11
Name ______________________   Date ____________
  1. An ant food trail can fade if ants stop adding pheromone chemicals to it.

    Circle one:   True   False

  2. An ant finds a crumb and marks its route home with pheromones. Other ants follow the route to the crumb. How did they find it?

    • They detected trail chemicals with their antennae
    • They heard spoken directions from the ant at the nest
    • They watched a waggle dance showing the crumb's location
  3. What does the time spent in a honeybee's straight waggle run tell other bees?

    • Which colour the flowers are
    • How far away the flowers are
    • How many bees should visit them
  4. The same honeybee waggles for 2 seconds for one flower patch, then 1 second for another. What does the shorter run indicate?

    • The second patch is closer to the hive
    • The second patch is farther from the hive
    • The second patch has no flowers left
  5. Which insect can use flashes of light to find a mate?

    • Ant
    • Cricket
    • Firefly
  6. Which statement describes the eastern North American monarch's annual migration?

    • Every butterfly completes the whole migration within a single day
    • It covers thousands of miles across several generations
    • It follows chemical trails left on the ground by worker ants
  7. On a vertical comb, an upward waggle run means fly towards the sun. Which run signals the opposite flight direction, away from the sun?

    • Straight down on the comb
    • Straight up along the honeycomb
    • Towards the entrance of the hive
  8. An eastern monarch starts its first autumn journey south. It has never visited the winter forests. What helps it choose a direction?

    • Memories of the route it followed on an earlier winter journey
    • Chemical trails left on the ground by earlier butterflies
    • Inherited abilities to use the sun with an internal clock
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Answer key

For grown-ups. Fold this page away before handing over the rest.

How insects talk without words W1-mt_a9VnPBhoYs-s1

  1. True · The scent fades when ants no longer renew the trail.
  2. They detected trail chemicals with their antennae · The ants detect pheromone chemicals with their antennae and follow the marked route.
  3. How far away the flowers are · Waggle-run duration conveys distance. A longer run signals food farther away.
  4. The second patch is closer to the hive · The shorter waggle run indicates the nearer flower patch.
  5. Firefly · Many fireflies use light signals to find mates. Crickets can use chirping, and ants can use scent trails.
  6. It covers thousands of miles across several generations · The population's long annual migration spans several generations, including wintering in Mexico.
  7. Straight down on the comb · On a vertical comb, straight down represents a flight away from the sun.
  8. Inherited abilities to use the sun with an internal clock · An inherited sun-compass system works with an internal clock. A previous journey is not needed.
Worksheet · LightMySky