Life cycles – Clip

The video explains the lifecycle of giant mayflies, which spend three years developing as larvae in a river. Once they hatch into adults, they cannot feed due to the absence of mouths, giving them only a few hours to find a mate before dying. Female mayflies live just long enough to lay their eggs safely.

How long do giant mayfly larvae spend developing before becoming adults?

• Three years

• Two years

• One year

• Four years

What is a unique characteristic of adult giant mayflies?

• They are nocturnal

• They can live for several weeks

• They have no mouths and cannot feed

• They have wings but cannot fly

Why do adult giant mayflies have a limited time to find a mate?

• They are affected by weather conditions

• They have no mouths and cannot feed

• They are hunted by predators

• They are territorial

What is the primary task of female giant mayflies before they die?

• To lay eggs

• To migrate

• To build a nest

• To find food

How long do female giant mayflies live after laying their eggs?

• A few days

• A few months

• A few weeks

• A few hours