Exam 29: Seed Plants

In the pine life cycle, microspores are produced in ____ and develop into ____.

An embryo sporophyte surrounded by nutritive tissue and a tough, protective outer coating makes up a(n) ____.

Which trait is a characteristic of most eudicots?

Progymnosperms are a group of extinct seedless vascular plants.

Which trait is a characteristic of most monocots?

Pollination in most cycads usually occurs when ____ transfer pollen from male plants to the developing gametophyte on female plants.

Gymnosperms are the most ecologically diverse plants on Earth.

In heterosporous plants, megaspores form in ____ and give rise to ____.

The immature male gametophyte of seed plants is called a(n) ____.

Conifers are estimated to have genomes ranging from 18 to 35 ____ base pairs, whereas the human genome has approximately 3.3 billion base pairs.

The ____ phylum has only about 70 living species of vascular, seed-bearing plants in three genera, including Welwitschia and Ephedra . Some species have a two-step fertilization process, similar to fertilization in angiosperms.

One advantage of angiosperm seeds is the presence of seed ____, a nutritive tissue produced during fertilization that nourishes the developing embryo.

The ____ phylum has about 550 known living species of vascular, seed-bearing plants, the most among gymnosperms. Many of them have needlelike leaves with thick cuticles and sunken stomata, and are thus adapted to dry conditions.

In seed plants, meiosis produces ____ megaspores, however ____ leaving a single functional megaspore to produce a ____ gametophyte.

Apples, peaches, cherries, strawberries, and many other fruits all belong to the ____ family.

To study the genome of the loblolly pine, Pinus taeda, researchers obtained DNA from ____ cells, thereby halving the amount of DNA for initial sequencing.

The oldest well-documented flowering plant fossils date to about ____ years ago.

If you see a yellow flower with "nectar guide" stripes and a strong, sweet odor, it is likely pollinated by ____.

The cycad lineage probably arose from ____.