Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/20

Click to flip

20 Cards in this Set

  • Front
  • Back
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
ovule
young diploid sporophyte of a plant
embryo
structure of seed plant embryo that stores or absorbs food for the developing embryo
cotyledon
seed containing ripened ovary of an anthophyte flower; may be fleshy or dry
fruit
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
monocotyledon
anthophyte that lives for one year or less
annual
anthophyte that has a lifespan of two years
biennial
anthophyte that lives for several years
perennial
class of anthophyte that has two seed leaves
dicotyledon
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
gymnosperms
plants with green stems that are not woody
herbaceous
animals which eat plants
herbivorous