What Do You Know About Angiosperms Flashcards

What do you know about angiosperms? These types of plants are the most common on earth, unlike the gymnosperms. The flashcards below perfectly designed to help you learn all you can about these specific plants. How about you give them a shot and get to find out just how conversant you are with the angiosperms and their characteristics.

24 cards   |   Total Attempts: 185
  

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Cards In This Set

Front Back
Angiosperms
  • Flowering plants
  • The dominant form of vegetation on Planet Earth
Phylum Anthophyta
  • Species?
  • Compared to other plants?
  • 250,000 named species
  • Most diverse group of plants
  • This phylum makes up over 90% of all plants
Why are angiophyta so successful?
  • Make use of animal pollinators
  • Improved means of seed dispersal
  • Overall improved reproductive success
Angiosperm life cycle:
  • Oogamous (large non-motile egg and a smaller motile sperm)
  • Heteromorphic alternation of generations
  • Sporophyte (2N-diploid) is dominant
  • Water is not required for fertilization
Angiosperms and Gymnosperms have a very similar life cycle EXCEPT
  • Gymnosperms ONLY have seeds
  • Angiosperms have seeds AND fruit
  • ovules mature into seeds
  • OVARIES MATURE INTO FRUIT
Flower Structure
Answer 6
Know: Sepals, Petals, Stamens, Pistils
Pistil vs Carpel
  • Pistil=female portion of flower
    • Consists of at least one carpel, maybe more (depends on species)
  • If pistil and carpel both have only one, then they mean the same thing
Male Gametophyte:
  • Where is it produced?
  • How is it produced?
  • Shape of microspores?
  • Anther
    • 2 cells=tube cell; generative cell
  • Tetrad (4)
How is the male gametophyte produced?
  1. Microsporocytes go through meiosis and lead to microspores
  2. Microspores separate
  3. Each part undergoes mitosis and produces two-celled pollen grains
    • ​​2 cells=tube cell/generative cell
  4. Those pollen grains are immature male gametophytes​
Male gametophytes depend on the _____ for nutrition.
Sporophyte-- Just like Gymnosperms!
What happens to the generative cell after pollination?
Undergoes mitosis and produces 2 sperm cells
Mature male gametophyte consists of.... (3)
Answer 12
  • 1 tube cells
  • 2 sperm cells
    • one of these sperms will fuse with the egg to produce the zygote
Female Gametophyte:
  • Other name?
  • Where is it produced?
  • How many cells?
  • How many nuclei?
  • How many eggs per ovule?
Answer 13
  • "Embryo sac"
  • In an ovule inside the ovary
  • cells=7
  • Nuceli=8
  • Eggs per ovule= 1
    • May have many ovules per ovary
Flowering Plant Gametophytes OVERALL:
  • Size?
  • How many cells?
  • Completely dependent on what for nutrition?
  • TINY
  • Male=3 cells
  • Females=7 cells, 8 nuclei
  • Dependent on sporophyte for nutrition
Pollination vs Fertilization
  • Once again, pollination does NOT equal fertilization
  • Pollination=deposition of pollen on stigma
  • Fertilization=fusion of sperm and egg
  • Just like sex doesn't right away mean conception in humans