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bio 1 mc 2

QuestionAnswer
KINGDOM PLANTAE has the domain Eukarya
Eukarya domain has the kingdom protista, plantae, fungi, and animilia
kingdom plantea has what phylum bryophyta, pterophyta, coniferophyta, anthophyta
Bryophyta mosses
pterophyta ferns
gymnosperms (coniferophyta) naked seeds
angiosperms (anthophyta) flowering plants
plants reproduce sexually;The plant sexual life cycle is called alternation of generations,
plants alternate between a multicellular haploid (n) body form and a multicellular diploid (2n) body form from one generation to the next
Because the haploid and diploid multicellular body forms are morphologically very different, a haploid parent looks nothing like its diploid offspring (and vice-versa)!
The haploid number (n) is the number of chromosomes in a gamete of an individual
In plants, the multicellular haploid (n) body form is called the gametophyte
while the multicellular diploid (2n) body form is called the sporophyte
The gametophyte produces haploid gametes, while the sporophyte produces haploid spores.
Gametes are made in organs called gametangia
sperm is produced in the antheridia
eggs are produced in the archegonia) m
while spores are made in organs called sporangia
gametophyte are produced by meiosis
sporophyte are produced by mitosis
Haploid gametes (sperm and egg) undergo fertilization to produce a diploid zygote
The diploid zygote grows into an adult sporophyte (2n)
A haploid spore grows directly into an adult gametophyte (n).
Polytrichum is a genus of mosses
(SEED PLANTS)The mature sporophyte develops from a novel structure called a seed
(SEED PLANTS)A seed consists of the embryonic sporophyte packaged with a nutrient-rich food source and surrounded by a protective outer coat
(SEED PLANTS) The seed allows an embryo to disperse away from the parent plant to a new location
(SEED PLANTS) The mature sporophyte does not release the spores it produces inside its sporangia
spores are retained within sporophyte tissue (SEED PLANTS) where they develop directly into male or female gametophytes. where they develop directly into male or female gametophytes
(SEED PLANTS)Male spore (i.e. microspores) develop into male gametophytes called pollen grains
(SEED PLANTS) while female spores (i.e. megaspores) develop into female gametophytes housed in ovules (immature seeds)
(SEED PLANTS)The gametophyte body form is extremely reduced in size
In conifers cones are structures associated with reproduction
In pines, are cones produced by the sporophyte or gametophyte? The sporophyte produces the cones and the cones contain the gametophyte.
the very small, male, staminate cones produce pollen
The wind disperses the pollen to the larger, female, ovulate cones where fertilization occurs
In which cones do fertilization and seed development occur? The female cone (megastrobilus, seed cone, or ovulate cone) contains ovules ... seed scale are two ovules that develop into seeds after fertilisation by pollen grains.
immature female cones are closed
mature female cones are opened
(In flowering plants), the mature sporophyte develops flowers, which are complex, macroscopic structures associated with sexual reproduction
(In flowering plants)The male parts of a flower are called stamens,and they produce pollen grains
(In flowering plants)The female parts of a flower are called carpels, and they produce ovules
(In flowering plants)The ovules are protected inside the fleshy part of the carpel called the ovary.
In flowering plants, After pollination and fertilization, ovules develop into mature seeds
In flowering plants, At the same time, the surrounding tissue, the ovary, develops into a fruit
In flowering plants, A “true fruit” is when the seeds are contained in the ovary when the fruit is mature
In flowering plants, A seed consists of an embryonic sporophyte and nutrient reserves for this embryo, which are together surrounded by a protective seed coat
In flowering plants, In flowering plants, the initial nutritive tissue is called endosperm (3n)
In flowering plants, Distinct embryonic structures called cotyledons (or “seed leaves”) eventually absorb the endosperm and use the nutrients to fuel germination of the seed
In mosses, observe that the sporophyte grows out of and. remains dependent upon the female gametophyte through maturity
After dispersal, a fern spore develops into a heart-shaped gametophyte called the prothallus
Created by: Es10gg
 

 



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