Exam 2: Chapter 28

TRUE or FALSE: Both gymnosperms and angiosperms have free-living gametophytes.

FALSE

Why are seeds reproductively superior to spores?

Seeds contain a young plant and also are protected by a seed coat

Cycads may be characterized as being:

dioecious and having motile sperm

Progymnosperms had two derived features, which are:

megaphylls and woody tissue

The fertilization process of flowering plants involves ____ nuclear fusion(s).

two

The first plants to produce seeds evolved during which time period?

Devonian period

Which is a basic difference between gymnosperms and flowering plants?

Gymnosperms produce seeds borne naked, while flowering plants produce seeds enclosed within a fruit

Flowering plants appeared in the fossil record in the:

Jurassic and Lower Cretaceous periods

In a flowering plant, the ____ is the site of meiosis and, ultimately, the production of pollen.

anther

In the process of fertilization in conifers, the pollen tube grows to which structure?

archegonium

The earliest pollinators of flowers were probably ____ that visited flowers to chew on the petals and leaves.

beetles

In flowering plants, the ____ generation is dominant.

diploid sporophyte

In most developing eudicot seeds, the primary source of nutritive material is in the:

endosperm

Most conifers have separate male and female reproductive parts on the same tree. This condition is referred to as:

monoecious

Angiosperms have ____ in their phloem.

sieve tube elements

Which phylum has very few surviving species, and are tropical and subtropical plants with stout, trunk-like stems, and compound leaves that resemble those of palms or tree ferns?

Cycadophyta

Extracts from the ginkgo tree are sold in over the counter (OTC) medicines purported to increase memory. Extracts from what other gymnosperm were once sold in OTC weight loss supplements?

Ephedra

If you identify a plant as Magnolia grandiflora, you therefore conclude that this plant is:

a core angiosperm

The most diverse, successful, and familiar group of plants today are the:

angiosperms

Recent studies of gene function as it relates to reproductive development suggest that angiosperms evolved most directly from:

conifers

What do the large female cones of a pine tree contain?

megasporangia

A plant with parallel veins and floral parts in threes or multiples of three would be classified as a:

monocot

What type of leaf venation do eudicots possess?

netted

The female gametophyte generation in angiosperms is found in the:

ovule of the ovary

Which of the following is an economically important basal angiosperm?

star anise

What do the xylem and phloem make up of in a plant?

vascular tissue