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20 Cards in this Set

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in seed plants, structure in which a male gametophyte develops; consists of sperm cells, nutrients, and a protective outer cover
pollen grain
in seed plants, the sporophyte structure surrounding the female gametophyte; forms the seed after fertilization
young diploid sporophyte of a plant
structure of seed plant embryo that stores or absorbs food for the developing embryo
seed containing ripened ovary of an anthophyte flower; may be fleshy or dry
plants that drop all of their leaves each fall or when water is scarce or unavailable
deciduous plant
class of anthophytes that have one seed leaf
anthophyte that lives for one year or less
anthophyte that has a lifespan of two years
anthophyte that lives for several years
class of anthophyte that has two seed leaves
Identify two adaptations that help seed plants reproduce on land.
The embryo is protected during harsh conditions by a tough seed coat. The seed contains a supply of food to nourish the young plant.
Explain why needlelike leaves are an adaptation in climates where water may be a limited resource.
The thick cuticle, reduced surface area, and sunken stomata limit evaporation.
What adaptations help make flowering so successful?
Fruits often aid in the dispersal of seeds. The flower protects the seed.
Compare and contrast characteristics of anthophytes and coniferophytes.
Unlike coniferophytes, anthophytes produce flowers and form seeds enclosed in a fruit. They both produce seeds.
Infer why the development of the seed might have affected the lives of herbivorous animals living in Earth's ancient forests.
Seeds contain a high-energy food source. By eating seeds, herbivores could obtain more energy per gram of food. Also, seeds ensured the survival of plants in drier environments where spore-reproducing plants could not survive. Therefore, herbivores’ food supply increased in drier environments.
Compare the formation of a spore in ferns and a seed in conifers.
Fern spores are produced in sporangia. Clusters of sporangia form sori that are found on the pinnae. Conifer seeds are produced on the scales of the cone.
Names sometimes used for the seed-bearing plants that do not produce fruits
plants with green stems that are not woody
animals which eat plants