Exam 21: Plant Evolution

In angiosperms, after fertilization, the triploid cell gives rise to ____.

True wood is produced only by ____.

The reinforcing substance called lignin provides support to a variety of plant structures, but is located primarily in plant ____.

Which plants resemble palm trees (but are not close relatives) and include the "sago palms" common in landscaping?

Which plants have no vascular tissue?

The flowering plants and gymnosperms differ from other plants by ____.

What is the underground stem of ferns and club mosses?

You are working as a botanist in a tropical forest and have located a small plant that has never before been seen or classified. You learn from your dissection of this plant that it has vascular tissue. Yet, over the lifespan of the plant as it grows and matures in your greenhouse, you observe that it never produces seeds. It does produce small cluster of spore-forming capsules on the underside of structures that resemble leaves. You classify the plant as a ____.

Which feature is least likely to be found in an animal-pollinated plant?

The group of plants that has the most species is the ____.

Match the term to the correct statement. -ferns

The moss sporophyte is not ____, so it depends on the gametophyte for nourishment even when mature.

The primary function of the cuticle of a plant is to ____.

Match the term to the correct statement. -cycads

The function of xylem is to ____.

In angiosperms, the ovule develops into the ____ after fertilization.

What acidic, absorbent bryophyte is used as an additive to planting mixes to help soil retain moisture?

Four of the five answers listed below are related by the number of chromosome sets present. Select the exception.

The most important reason to store seeds in seed vaults is to ____.

Four of the five answers listed below exhibit a dominant sporophyte stage. Select the exception.