Biology U2 L5 - Seed Plants

Front 1

in seed plants, structure in which a male gametophyte develops; consists of sperm cells, nutrients, and a protective outer cover

Back 1

pollen grain

Front 2

in seed plants, the sporophyte structure surrounding the female gametophyte; forms the seed after fertilization

Back 2

ovule

Front 3

young diploid sporophyte of a plant

Back 3

embryo

Front 4

structure of seed plant embryo that stores or absorbs food for the developing embryo

Back 4

cotyledon

Front 5

seed containing ripened ovary of an anthophyte flower; may be fleshy or dry

Back 5

fruit

Front 6

plants that drop all of their leaves each fall or when water is scarce or unavailable

Back 6

deciduous plant

Front 7

class of anthophytes that have one seed leaf

Back 7

monocotyledon

Front 8

anthophyte that lives for one year or less

Back 8

annual

Front 9

anthophyte that has a lifespan of two years

Back 9

biennial

Front 10

anthophyte that lives for several years

Back 10

perennial

Front 11

class of anthophyte that has two seed leaves

Back 11

dicotyledon

Front 12

Identify two adaptations that help seed plants reproduce on land.

Back 12

The embryo is protected during harsh conditions by a tough seed coat. The seed contains a supply of food to nourish the young plant.

Front 13

Explain why needlelike leaves are an adaptation in climates where water may be a limited resource.

Back 13

The thick cuticle, reduced surface area, and sunken stomata limit evaporation.

Front 14

What adaptations help make flowering so successful?

Back 14

Fruits often aid in the dispersal of seeds. The flower protects the seed.

Front 15

Compare and contrast characteristics of anthophytes and coniferophytes.

Back 15

Unlike coniferophytes, anthophytes produce flowers and form seeds enclosed in a fruit. They both produce seeds.

Front 16

Infer why the development of the seed might have affected the lives of herbivorous animals living in Earth's ancient forests.

Back 16

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.

Front 17

Compare the formation of a spore in ferns and a seed in conifers.

Back 17

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.

Front 18

Names sometimes used for the seed-bearing plants that do not produce fruits

Back 18

gymnosperms

Front 19

plants with green stems that are not woody

Back 19

herbaceous

Front 20

animals which eat plants

Back 20

herbivorous