Plant Reproduction

Where in the flower are ovules (the female gamete) produced?

Where in the flower is pollen (the male gamete) produced?

Match the following.

• Stigma

• Female part of the flower where ovules are produced

• Ovary

• Tube that the pollen travels down to reach the ovules

• Style

• Male part of the flower that produces pollen

• Seed

• Female part of the flower where pollen sticks

• Anther

• What an ovule becomes when it is fertilized by pollen

Reorder the following steps of pollination.

• Pollen is produced by the anther.

• Pollen travels down the style.

• Pollen is transferred to the stigma.

• Pollen fertilizes ovules in the ovary.

Sort the structures based off whether they are parts of the stamen or the pistil of a flower.

Groups:

(a) Stamen

,

(b) Pistil

• anther

• ovule

• pollen

• style

• filament

• stigma

• ovary

A scientist cuts the stamen out of a flower but leaves the pistil. What can the flower no longer do?

• Self-pollinate

• Form fruit

• Photosynthesize

• Grow

Tags

NGSS.MS-LS1-4

A student wants to see if a plant has been successfully pollinated and will produce seeds. What should he or she check for?

• See if the flower has bright or dull petals.

• See if the anthers are producing pollen.

• See if oxygen is leaving from the stomata in the underside of leaves.

• See if pollen has fertilized the ovules in the flower ovary.

To produce better tomato plants, growers will sometimes move pollen from the flowers of one plant to the flowers of another using a small brush. What does this accomplish?

• Cross-pollination

• Sexual reproduction

• Increased genetic diversity

• All of the above

Tags

NGSS.MS-LS3-2

NGSS.MS-LS4-4

A lizard goes from flower to flower, licking nectar and transferring pollen onto stigmas. How does this help the plants?

• The cross-pollination will produce seeds with new genetic combinations.

• The plant is harmed because glucose is being stolen from it.

• The self-pollination will lead to great genetic diversity in the next generation.

• The plants are able to asexually reproduce this way.

Tags

NGSS.MS-LS1-4

What is the downside to a population of plants that only reproduce through self-pollination?

• Their offspring will have a variety of different traits.

• The plants will use too much energy reproducing.

• The population will be at risk of being wiped out from disease due to low diversity.

• They will not be able to form seeds and fruit.

Tags

NGSS.MS-LS3-2

NGSS.MS-LS4-4