Plant diversity I. Origin of Plants:
... We'll discuss meiosis later in the semester. Let's just say for now that spores are NOT seeds. Seeds are kind of like a fertilized egg. Spores are more like sperm or (unfertilized) eggs. Spores will eventually meet up with other spores and make a diploid fern plant. (The underside of fern leaves ha ...
... We'll discuss meiosis later in the semester. Let's just say for now that spores are NOT seeds. Seeds are kind of like a fertilized egg. Spores are more like sperm or (unfertilized) eggs. Spores will eventually meet up with other spores and make a diploid fern plant. (The underside of fern leaves ha ...
Functions of Plant Parts:
... its associated parts, and often protects the seed. » Some plants have a dry dehiscent fruit ...
... its associated parts, and often protects the seed. » Some plants have a dry dehiscent fruit ...
THE PLANT KINGDOM - Welcome to Cherokee High School
... other tough materials • Cells are connected to each other by shared cytoplasm • Large central vacuoles ...
... other tough materials • Cells are connected to each other by shared cytoplasm • Large central vacuoles ...
Plant Reproduction
... • Haploid: having a single set of chromosomes in each cell. • Diploid: having two sets of chromosomes in each cell. • Mitosis: cell division, which produces two genetically identical cells. • Meiosis: reduction division, which produces four haploid reproductive cells. ...
... • Haploid: having a single set of chromosomes in each cell. • Diploid: having two sets of chromosomes in each cell. • Mitosis: cell division, which produces two genetically identical cells. • Meiosis: reduction division, which produces four haploid reproductive cells. ...
Seed plants
... Conifers’ leaves are called needles. The cycads are widely distributed through the tropical and subtropical regions. They are characterized by a large crown of large pinnately compound leaves. They are frequently confused with and mistaken for palms or ferns, but are only distantly related to both. ...
... Conifers’ leaves are called needles. The cycads are widely distributed through the tropical and subtropical regions. They are characterized by a large crown of large pinnately compound leaves. They are frequently confused with and mistaken for palms or ferns, but are only distantly related to both. ...
Plant Classification Notes
... A seed is produced from an egg cell that is fertilized by sperm from pollen grains. ...
... A seed is produced from an egg cell that is fertilized by sperm from pollen grains. ...
Overview of Green Plant Phylogeny
... • Trend from Apocarpic to Syncarpic • Trend from poorly differentiated filaments and anthers to better differentiated • Trend from poorly differentiated style and stigma to better differentiated ...
... • Trend from Apocarpic to Syncarpic • Trend from poorly differentiated filaments and anthers to better differentiated • Trend from poorly differentiated style and stigma to better differentiated ...
You Light Up My Life
... into making gametophytes • Land plants put energy into structures that produce spores and retain, nourish, ...
... into making gametophytes • Land plants put energy into structures that produce spores and retain, nourish, ...
Reproduction of Seed Plants
... a) contains 1 or more ovules where female gametophytes are produced 3) style a) narrow stalk 4) stigma a) at the top of style b) sticky part where pollen grains land ...
... a) contains 1 or more ovules where female gametophytes are produced 3) style a) narrow stalk 4) stigma a) at the top of style b) sticky part where pollen grains land ...
Filicinae, Gymnospermae, Angiospermae
... The earliest known macrofossil confidently identified as an angiosperm, Archaefructus liaoningensis, is dated to about 125 million years BP; the Cretaceous period. The number of species of flowering plants is estimated to be in the range of 250,000 to 400,000. ...
... The earliest known macrofossil confidently identified as an angiosperm, Archaefructus liaoningensis, is dated to about 125 million years BP; the Cretaceous period. The number of species of flowering plants is estimated to be in the range of 250,000 to 400,000. ...
The Land Plants: Adaptation for Terrestrial life
... sporangium is surrounded by integument naked seeds which is the mature ovule secondary growth (wood or secondary xylem) ...
... sporangium is surrounded by integument naked seeds which is the mature ovule secondary growth (wood or secondary xylem) ...
Plant Unit
... They _______________ surface area so that more ________________ and _________________ can be absorbed by ___________(osmosis) and ______________ _______________. ...
... They _______________ surface area so that more ________________ and _________________ can be absorbed by ___________(osmosis) and ______________ _______________. ...
Ch. 22 Plant Book Notes
... NONVASCULAR PLANTS Plants draw up water by osmosis only a few centimeters above the ground. Low growing plants that are found in ...
... NONVASCULAR PLANTS Plants draw up water by osmosis only a few centimeters above the ground. Low growing plants that are found in ...
Plants & Fungi
... Mosses and liverworts, which gave rise to: Ferns and related plant groups which gave rise to: Conifers and related plant groups which gave rise to: Angiosperms (flowering plants) which have form two groups: ...
... Mosses and liverworts, which gave rise to: Ferns and related plant groups which gave rise to: Conifers and related plant groups which gave rise to: Angiosperms (flowering plants) which have form two groups: ...
Ch.-2-notes - North Star Academy
... - Animals looking for nectar spread pollen - blows the pollen from grass into the pistil of another grass plant - a pollen tube grows from the pollen into the ovary - the cell from the pollen and the egg cell in the ovary combine for fertilization to make a new plant ...
... - Animals looking for nectar spread pollen - blows the pollen from grass into the pistil of another grass plant - a pollen tube grows from the pollen into the ovary - the cell from the pollen and the egg cell in the ovary combine for fertilization to make a new plant ...
Environmental Science - Plants
... Pollinators: Living pollination vectors (insects, birds, or other animals) Flower shape, pattern, color and fragrance are adaptations that attract sanimal pollinators Often rewarded for visiting a flower by obtaining nutritious pollen or sweet Nectar Selective advantage of Pollinators visiti ...
... Pollinators: Living pollination vectors (insects, birds, or other animals) Flower shape, pattern, color and fragrance are adaptations that attract sanimal pollinators Often rewarded for visiting a flower by obtaining nutritious pollen or sweet Nectar Selective advantage of Pollinators visiti ...
Chapter 30 Plant Diversity II: The Evolution of Seed Plants seed
... gametophyte develop here and are nourished by nucellus gametophyte develops into a sporophyte embryo if fertilized by a sperm cell sporophyte-containing ovule develops into a seed pollen - vehicle for sperm cells - microspores develop into pollen grains which mature to form male gametophytes - carri ...
... gametophyte develop here and are nourished by nucellus gametophyte develops into a sporophyte embryo if fertilized by a sperm cell sporophyte-containing ovule develops into a seed pollen - vehicle for sperm cells - microspores develop into pollen grains which mature to form male gametophytes - carri ...
Carpels
... ○ After flowering, most of their energy is used to develop seeds and fruits Biennials take two years to complete life cycle. ○ Produce vegetative growth during first year and store carbohydrates in underground roots (carrots) or stems (onion) ○ In second year, stored carbohydrates are used to prod ...
... ○ After flowering, most of their energy is used to develop seeds and fruits Biennials take two years to complete life cycle. ○ Produce vegetative growth during first year and store carbohydrates in underground roots (carrots) or stems (onion) ○ In second year, stored carbohydrates are used to prod ...
seed plants
... • Monocots have one cotyledon (corn, lily, etc). • Dicots have two cotyledons (bean, oak, ...
... • Monocots have one cotyledon (corn, lily, etc). • Dicots have two cotyledons (bean, oak, ...
Plant Diversity II
... Microspores develop into pollen grains which mature to form the male gametophytes of seed plants: Pollen grains coated with a resistant polymer, sporopollenin Can be carried away by wind or animals (e.g. bees) following release from microsporangia ...
... Microspores develop into pollen grains which mature to form the male gametophytes of seed plants: Pollen grains coated with a resistant polymer, sporopollenin Can be carried away by wind or animals (e.g. bees) following release from microsporangia ...
Figure 38.2 Simplified overview of angiosperm life cycle
... Dichogamy: stamens and carpels mature at different times on the same flower Stamens and carpels are physically separated in the same flower Genetic self-incompatibility: pollen will not successfully fertilize if its self-sterility genes match those of the recipient plant ...
... Dichogamy: stamens and carpels mature at different times on the same flower Stamens and carpels are physically separated in the same flower Genetic self-incompatibility: pollen will not successfully fertilize if its self-sterility genes match those of the recipient plant ...
Lecture 6b Land Plants: Gymnosperms and
... • Dispersal: seeds can be dispersed more widely than spores by enclosing them in a bribe (fruit) and having animals move them. • Dormancy: the developing embryo is protected and can wait a long time to germinate when conditions are good. ...
... • Dispersal: seeds can be dispersed more widely than spores by enclosing them in a bribe (fruit) and having animals move them. • Dormancy: the developing embryo is protected and can wait a long time to germinate when conditions are good. ...
Root and Shoot Systems
... carboniferous as trees – Formed coal fossils (with lycophyta) • Complex frond leaves – Node: Point on stem where leaf attaches – Sorus on fronds ...
... carboniferous as trees – Formed coal fossils (with lycophyta) • Complex frond leaves – Node: Point on stem where leaf attaches – Sorus on fronds ...
Flowering plant
The flowering plants (angiosperms), also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants. Angiosperms are seed-producing plants like the gymnosperms and can be distinguished from the gymnosperms by characteristics including flowers, endosperm within the seeds, and the production of fruits that contain the seeds. Etymologically, angiosperm means a plant that produces seeds within an enclosure, in other words, a fruiting plant.The ancestors of flowering plants diverged from gymnosperms around 245–202 million years ago, and the first flowering plants known to exist are from 160 million years ago. They diversified enormously during the Lower Cretaceous and became widespread around 120 million years ago, but replaced conifers as the dominant trees only around 60–100 million years ago.