Chapter 27

Seed plants lack which of the following structures? (a) ovules surrounded by integuments (b) microspores and megaspores (c) vascular tissues (d) a large, nutritionally independent sporophyte (e) a large, nutritionally independent gametophyte

Conifers, cycads, ginkgo, and gnetophytes are collectively called (a) fern allies (b) gymnosperms (c) angiosperms (d) dicots (e) seedless vascular plants

Most conifers are ______________, having male and female reproductive parts at different locations on the same plant. (a) incomplete (b) imperfect (c) monoecious (d) dioecious (e) perfect

The immature male gametophytes of pine are called (a) ovules (b) stamens (c) seed cones (d) pollen grains (e) polar nuclei

The transfer of pollen grains from the male to the female reproductive structure is known as (a) pollination (b) fertilization (c) embryo sac development (d) seed development (e) fruit development

Motile sperm cells are found as vestiges in these two gymnosperm groups: (a) monocots, dicots (b) gnetophytes, conifers (c) gnetophytes, flowering plants (d) cycads, conifers (e) cycads, ginkgo

More than ______________ species of flowering plants have been identified. (a) 235 (b) 2350 (c) 23,500 (d) 235,000 (e) 2,350,000

This class of flowering plants includes the palms, grasses, and orchids. (a) dicots (b) gnetophytes (c) cycads (d) monocots (e) conifers

The pistil has three sections: (a) stigma, style, and anther (b) anther, filament, and ovule (c) stigma, style, and ovary (d) ovary, ovule, and sepal (e) corolla, stamen, and sepal

A simple pistil consists of a single (a) calyx (b) carpel (c) ovule (d) filament (e) petal

A flower that lacks stamens is both ______________ and ______________. (a) complete; imperfect (b) incomplete; perfect (c) complete; perfect (d) incomplete; imperfect

After fertilization, the ______________ develop(s) into a fruit and the ______________ develop(s) into a seed. (a) ovary; ovule (b) polar nuclei; ovule (c) ovary; endosperm (d) ovule; ovary (e) ovule; polar nuclei

The female gametophyte in flowering plants is also called the (a) polar nuclei (b) anther (c) embryo sac (d) endosperm (e) sporophyll

This living dicot may be the nearest living relative to the ancestor of all flowering plants (a) Amborella (b) Archaeopteris (c) Gnetum (d) water lily (e) Archaeanthus