28. Plants

What is the term for a plant that produces seeds enclosed within a protective covering?

Seed plants are vascular plants that use seeds during the ______ stage of their life cycles.

Which of the following adaptations is common to all seed plants?

Which of the following statements about seed plants is true?

Which of the following is a key feature of seed plants that facilitates life on land?

Seed plants reproduce using pollen, which develops into sperm cells. Which of the following structures is responsible for carrying the male gametes in seed plants?

What can be derived from seed plants?

Which one of the following is true of seed plants but not true of seedless plants?

The closest seedless relatives of seed plants produce one kind of spore that gives rise to a bisexual gametophyte. What does this suggest about the ancestors of seed plants?

The eggs of seed plants are fertilized within ovules, and the ovules then develop into __________.

The cells within pollen grains are __________ and together comprise the __________.

Besides the plant tissue that humans ingest, which angiosperm tissue is most directly important for human survival?

Six major crops˜wheat, rice, maize, potatoes, cassava, and sweet potatoes˜contribute disproportionately to human diets. What percentage of all the calories consumed by humans is supplied by these crops?

Which of the listed examples is evidence provided by living gymnosperms of an evolutionary transition between seedless and seed plants?

Which of the following best states the advantages that seeds have over spores?