How do Plants Grow and Reproduce?

Study Guide

Why Do plants have Flowers?

All plants begin as a seed. Many plants have flowers. The structures inside the flower help the plant reproduce.

Reproduction is the process by which a plant makes new plants.

Pollination is the transfer of pollen from one flower to another.

After pollination, pollen grows a tube down to the ovule, and fertilization occurs.

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Label the stamen, the petal, and the anther.

On which of these three parts would you find pollen?

The ovules, or eggs, are inside the ovary. Label the ovule and the ovary.

Pollen must join with the _________________ for a seed to form.

Pollinators help move pollen from one plant to another. Circle the pollinators.

Number 1-4 to show the steps of pollination and fertilization.

______Seeds develop inside the ripe fruit.

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______After pollen reaches the ovule and fertilization occurs, a seed forms.

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______ Pollen from another flower moves down the pollen tube to the ovule.

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_____ Insects move pollen from one plant to another as they gather nectar to feed themselves.

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Some plants do not produce flowers to reproduce.

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A pine tree produces cones. Male cones produce pollen, and female cones contain many ovules.

Pollen from the male cone can be carried on the wind. If it lands on a female cone from the same type of tree, a seed will be produced.

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Some plants, such as ferns, produce spores to reproduce. Spores can fall to the ground or be carried by the wind. If they land in a place with the right conditions, a new plant will grow. Draw an arrow to the spores.

How Do Seeds Get Around

Seed Dispersal

When plants release seeds, it is best for the seeds to be moved away from the parent plant. This gives the seed a better chance of getting the sunlight, water, and space to grow into a mature plant.

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How can seeds move from one place to another? Explain how each seed would travel to a new place.