Exam 34: Plant Reproduction and Growth

The phenomenon known as phototropism is due to the plant hormone _____________,which regulates cell growth.

Which of these is a method evolved by angiosperms to attract pollinators to their flowers?

All plants have both male and female reproductive structures together in the same individual flower.

Give an example of a wind-pollinated plant._____________________

What characteristic describes wind-pollinated plants?

Male gametophytes are also known as _________________ and they develop into microspores.

When pollen from a flower's anther pollinates the same flower's stigma,the process is called _____________________.

What is the primary purpose of a fruit?

P_r changes to P_fr after absorbing ____________ nm wavelength of light.

This hormone is used commercially to space out the flowers of grape vines by extending the internode lengths so the fruits have more room to grow and become larger.

Explain the significance of the 1950s experiments of F.C.Steward was able to induce differentiated carrot cells to form an entire carrot plant.This was evidence that even differentiated cells still possessed all of the genetic material needed for the differentiation of entire plants.F.C.Steward.

The length of daylight affects flowering,a process called:

_____ is the mechanism by which organisms measure seasonal changes in relative day and night length.

The response of plants to touch is known as:

Within the embryo sac of the angiosperm,______ nuclei are arranged in precise positions.

Which of the following plants produces seeds that germinate successfully under water?

Which of the following types of plants produce "suckers",or sprouts,which give rise to new plants?

When applied to underripe fruit,the hormone _____________ hastens ripening.

_________________ is a plant hormone that causes the dormancy of many seeds.

Describe double fertilization.