Chapter 28 Biology

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

anther

Cycads may be characterized as being:

dioecious and having motile sperm.

In flowering plants, the ____ generation is dominant.

diploid sporophyte

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

monocot

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

monoecious.

What type of leaf venation do eudicots possess?

netted

The female gametophyte generation in angiosperms is found in the:

ovule of the ovary

Angiosperms have ____ in their phloem.

sieve tube elements

Which of the following is an economically important basal angiosperm?

star anise

Flowering plants appeared in the fossil record in the:

Jurassic and Lower Cretaceous periods

Why are seeds reproductively superior to spores?

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

Which statement about gymnosperms and angiosperms is FALSE?

Both groups have free-living gametophytes

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

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

Devonian period

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

Which is a basic difference between gymnosperms and flowering plants?

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

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

angiosperms

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

beetles

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

conifers

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

endosperm.

Progymnosperms had two derived features, which are:

megaphylls and woody tissue.

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

megasporangia

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

two

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

vascular tissue

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

a core angiosperm

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

archegonium