bio chapter 25
Terms
undefined, object
copy deck
- What is a seed?
- a reproductive package that contains embryo and a supply of stored foods inside a protective coating.
- What is the reproductive cycle of seed plants?
- cone flowers,meiosis spores pollen eggs haploid(n),mitosis gametophytes gametes haploid(n), fertilization zygote diploid (2n),mitosis sporophyte diploid (2n),and alternates.
- Where are the gametophytes of seed bearing plants
- The gametophytes live inside the sporophytes(common large plants you see around you)
- Explain why seed bearing plants are able to live everywhere on Earth
- they have the ability to reproduce without water
- gametophytes live inside special parts of the sporophyte-plant parts known as
- cones and flowers
- What kinds of spores are produced by seed plants
- pollen and egg
- Cones and floweres are home to the __________ generation
- gametophyte
- What are the four living divisions of Gymnosperms?
- Cycads,ginkgoes,gnetophytes and conifers
- Describe gymnosperms
- plants that bear their seeds on the surfaces of reproductive structures called scales
- what does gymnosperm mean
- naked seed
- The first seed-bearing plants were known as
- Seed fern - extinct today
- Define Cycads
- palm like plants most common one - sago palm
- define Ginkgoes
- Ginkgo biloba may be the oldest living species of seed bearing plants
- What are conifers
- sometimes called evergreens- members include spruce,pine,cedar,redwood,fir and yew trees
- What do male cones produce
- pollen
- What do female cones produce
- eggs
- Female cones are sometimes called:
- seed cones because they eventually contain mature seeds
- What are angiosperms?
- flowering plant whose seeds develop within a matured ovary (ovary)
- What is the difference between gynmosperms and angiosperms?
- gymnosperms have exposed seeds and angiosperms produce seeds encased in a protective tissue of the sporophyte known as the ovary.
- The combination of seed and ovary is known as a
- fruit
- What are the reproductive organs of angiosperms?
- the Flower
- Flowers are formed from 4 types of specialized leaves
- sepals, petals, stamens and carpels
- Define Sepals
- structure that encloses and protects the developing flower bud and opens as the flower blooms
- Define petals
- one of the white or colorful leaflike parts of a flower
- Define Stamens
- male leaf that produces pollen
- Define filament
- stamen that emerges from a flower
- Define anther
- sac at the tip of a filament where pollen is produced and released
- Define carpels
- female leaf of a flower
- Define ovules
- the place where female gametophytes are produced
- Define style
- the stemlike narrow part of the carpal
- Define stigma
- sticky tip of the style of the plant
- Define pistil
- female reproductive organ of a flowering plant, composed of ovary, style and stigma
- What important feature distinguishes the life cycle of an angisperm from life cycle of gymnosperm?
- double fertilization
- define endosperm
- food rich tissue that surrounds the embryo of a plant
- define double fertilization
- process of 2 fertilization events taking place inside an embryo sac
- What is a fruit?
- if it contains a seed inside the overy wall-ripened ovary that contains angiosperm seeds
- What reproduces faster angiosperm or gymnosperm?
- Angiosperm
- define cotyledons
- the large seed leaves that contain stored food to nourish the plant embryos of seeds
- plants that have one cotyledon are know as:
- monocots
- Monocots constitute the class monocotyledonae which includes
- grasses, irises,and cattails, corn, daffadils
- plants that have two cotyledons are known as
- dicots
- the dicots constitute the class dicotyledonae which includes
- roses,clover, tomotoes, oaks and daisies and the flowering trees such as maple, oak, elm, apple and dogwood.
- monocots are identified by a single cotyledon as well as:
- veins in monocot leaves usually lie parallel to each other, monocot flowers usually have floral plantss in multiples of three
- dicots are identified by having 2 cotyledons as well as:
- veins usually form a branching network, dicot flowers usually show multiples of 4 or 5