(7th-Science) Chapter 9: Plant Functions STUDY GUIDE

Positive gravitropism would be shown in what part of a plant?

• roots

• flowers

• stems

• leaves

If you come across a vine climbing up a trellis at your house, that would demonstrate...

• phototropism

• winding tropism

• gravitropism

• thigmotropism

Hormones cause plants to stop growing, divide, and grow in size.

• True

• False

Which hormone would you use to help you ripen fruit?

• cytokinin

• ethylene

• auxin

• abscisic acid

If a plant is growing out of control, which hormone would you use to inhibit the other hormones?

• cytokinin

• ethylene

• auxin

• abscisic acid

Which type of plants are not affected by the length of day?

• day-neutral

• short-day

• long-day

• critical-night

If a plant (such as poinsettias) needs many hours in darkness in order to bloom, which kind of plants would they be?

• day-neutral

• short-day

• long-day

• critical-night

What vocabulary word is defined as, "the repeating cycle of gametophyte and sporophyte structures"?

The capsules of a moss plant produce this...

• zygotes

• sepals

• spores

• pollen

If you walk up to a fern, which stage of the life-cycle are you often looking at?

• gametophyte

• gymnosperm

• angiosperm

• sporophyte