Unit 1 Lesson 3 Plant Reproduction

When a male structure and a female structure combine, it is called _____.

• circulation

• fertilization

• multiplying

• sprouting

The male part of a flower is called a(n) _____.

• pistil

• ovary

• stamen

• seed

Pine, fir, and spruce trees do not have flowers with pistils and stamens, so they reproduce using _____.

• spores and petals

• seeds that float on water

• seeds that have tiny hooks

• male cones and female cones

Answer explanation

Some seeds float on water away from parent plants because they _____.

• have wing-like structures

• have a hollow structure

• have hooks or barbs

• have fluffy parachutes

Answer explanation

What do seeds and spores have in common?

• They both are used by mosses to reproduce.

• They both are only transported by the wind.

• They both can eventually grow into new plants.

• They both grow on conifers before reproduction.

What causes these dandelion seeds to spread?

Describe what structure allows the seeds to travel through the air.

Why is it important for seeds to be able to scatter?

The picture shows an adult plant and its offspring. How are they related to each other? Use evidence from the picture to make your claim.

• Adult plants make offspring with flowers.

• Adult and offspring plants are the same size.

• Adult and offspring plants have the same structures.

• Adult plants make offspring of the same king of plant.

Leo observes a bee on a flower as shown in the picture. He then observes the bee fly away and land on another flower. What happens when an insect lands on a flower? Base your claim on evidence from the picture.

• Insects are attracted to the seeds inside the fruit.

• Insects are attracted to the female parts of the flower.

• Some pollen on top of the pistil stick to the insect's body.

• Some pollen on top of the stamens stick to the insect's body.