Plant Diversity II - Bakersfield College
... • Pollination leads to fertilization • Fertilization produces sporophyte embryo • Seed = embryo + food reserves for embryo + tough outer coat – Much tougher than spores and small gametophytes, so seed species very successful – Gymnosperm seed food reserves come from tissues of female gametophyte ...
... • Pollination leads to fertilization • Fertilization produces sporophyte embryo • Seed = embryo + food reserves for embryo + tough outer coat – Much tougher than spores and small gametophytes, so seed species very successful – Gymnosperm seed food reserves come from tissues of female gametophyte ...
Kingdom Plants chapter 18
... Prothallus bears female sex organs Archegonia, just behind apical notch, in maximum thick part. Prothallus also bears male sex organs Antheridia near posterior end. Therefore ferns exhibit an alternation of 2 independent generations. ...
... Prothallus bears female sex organs Archegonia, just behind apical notch, in maximum thick part. Prothallus also bears male sex organs Antheridia near posterior end. Therefore ferns exhibit an alternation of 2 independent generations. ...
Introduction to plants
... Gymnosperms have naked seeds in cones Angiosperms have flowers that produce seeds to attract pollinators and produce seeds ...
... Gymnosperms have naked seeds in cones Angiosperms have flowers that produce seeds to attract pollinators and produce seeds ...
Evolution of Australian Biota Study Day
... Broad-leaved rainforests of Gondwana At the time of Australia’s rifting from Antarctica during the early Tertiary period (approximately 55–50 million years ago) broad-leaved rainforest covered much of the continent. Conifers shared the forests with flowering plants and the fossil pollen record shows ...
... Broad-leaved rainforests of Gondwana At the time of Australia’s rifting from Antarctica during the early Tertiary period (approximately 55–50 million years ago) broad-leaved rainforest covered much of the continent. Conifers shared the forests with flowering plants and the fossil pollen record shows ...
week 5, gymnosperms, angiosperms and flowering plants
... remarkable discovery was made that the coontie is pollinated by beetles, that feed on both the male and female cones. ...
... remarkable discovery was made that the coontie is pollinated by beetles, that feed on both the male and female cones. ...
Plant Kingdom
... (2) Style – Allows place for tube to carry sperm from pollen to egg in ovary (3) Ovary- contains eggs which become seeds once they are fertilized by the pollen. ...
... (2) Style – Allows place for tube to carry sperm from pollen to egg in ovary (3) Ovary- contains eggs which become seeds once they are fertilized by the pollen. ...
PLANT DIVERSITY EVOLUTION OF LAND PLANTS
... • Ferns were giant and very abundant. • They contributed to the increase in oxygen in Earth’s atmosphere and fossil fuels that we now use for energy. ...
... • Ferns were giant and very abundant. • They contributed to the increase in oxygen in Earth’s atmosphere and fossil fuels that we now use for energy. ...
1 CHAPTER 4: REPRODUCTION 4.1 Sexual and
... Produces ovules Produces a sweet liquid which is known as nectar ...
... Produces ovules Produces a sweet liquid which is known as nectar ...
Diversity in the Plant Kingdom I. Introduction
... egg. Thus evolved sperm cells protected within pollen grains that could instead use wind, and later, unwitting animals to be carried to the egg. • And what to do with the next generation? Conditions on land are much less predictable than in water, possibly unfavorably dry or hot after fertilization ...
... egg. Thus evolved sperm cells protected within pollen grains that could instead use wind, and later, unwitting animals to be carried to the egg. • And what to do with the next generation? Conditions on land are much less predictable than in water, possibly unfavorably dry or hot after fertilization ...
Lecture 12: Gymnosperms and Angiosperms
... • Heterosporous: forms two different types of spores (micro- and megaspores; male and female spores) • Male – pollen grains contain tube nucleus and generative cell (2 sperm nuclei) • Female – female gametophyte contains egg and 2 polar nuclei ...
... • Heterosporous: forms two different types of spores (micro- and megaspores; male and female spores) • Male – pollen grains contain tube nucleus and generative cell (2 sperm nuclei) • Female – female gametophyte contains egg and 2 polar nuclei ...
Plant Reproduction - Petal School District
... result of selection for more efficient pollination strategies. • Flower parts are modified leaves. Those that were brightly colored attracted insects in search of pollen. • Pollen itself is a proteinrich food for insects. Some plants offer other rewards, ...
... result of selection for more efficient pollination strategies. • Flower parts are modified leaves. Those that were brightly colored attracted insects in search of pollen. • Pollen itself is a proteinrich food for insects. Some plants offer other rewards, ...
Lecture 12: Gymnosperms and Angiosperms
... • Heterosporous: forms two different types of spores (micro- and megaspores; male and female spores) • Male – pollen grains contain tube nucleus and generative cell (2 sperm nuclei) • Female – female gametophyte contains egg and 2 polar nuclei ...
... • Heterosporous: forms two different types of spores (micro- and megaspores; male and female spores) • Male – pollen grains contain tube nucleus and generative cell (2 sperm nuclei) • Female – female gametophyte contains egg and 2 polar nuclei ...
Flowers
... and whitish lines, sterile. Within are smooth, glossy columns, and near the base of each we shall find the true flowers, minute affairs, some staminate; others, on distinct plants, pistillate, the berry bearers; or rarely both male and female florets seated on the same club, as if Jack's elaborate p ...
... and whitish lines, sterile. Within are smooth, glossy columns, and near the base of each we shall find the true flowers, minute affairs, some staminate; others, on distinct plants, pistillate, the berry bearers; or rarely both male and female florets seated on the same club, as if Jack's elaborate p ...
Evolution of Seed Plants
... heterosporous. They form two types of spores: megaspores (female) and microspores (male). Megaspores develop into female gametophytes that produce eggs, and microspores mature into male gametophytes that generate sperm. Because the gametophytes mature within the spores, they are not free-living, as ...
... heterosporous. They form two types of spores: megaspores (female) and microspores (male). Megaspores develop into female gametophytes that produce eggs, and microspores mature into male gametophytes that generate sperm. Because the gametophytes mature within the spores, they are not free-living, as ...
Review Chapter 22
... In the life cycle of primitive plants, which of the following predominates? a. haploid stage b. diploid stage c. large sporophyte body d. both diploid stage and large sporophyte body e. both haploid stage and large sporophyte body Which of the following is NOT a major trend in terrestrial autotroph ...
... In the life cycle of primitive plants, which of the following predominates? a. haploid stage b. diploid stage c. large sporophyte body d. both diploid stage and large sporophyte body e. both haploid stage and large sporophyte body Which of the following is NOT a major trend in terrestrial autotroph ...
Practice Exam 2 Below are sample questions from your book (of
... o Describe reproductive advantage of seeds over ovules Recognize that gymnosperms and angiosperms have different levels of diversity and be able to explain why The role of co-evolution in angiosperm diversification (why are there so many angiosperm species?) Importance of fruit production as a seed ...
... o Describe reproductive advantage of seeds over ovules Recognize that gymnosperms and angiosperms have different levels of diversity and be able to explain why The role of co-evolution in angiosperm diversification (why are there so many angiosperm species?) Importance of fruit production as a seed ...
Chapter 24: Evolution and Diversity of Plants
... Dominant sporophyte produces windblown spores Whisk fern, Psilotum Diversity of ferns Fern Life Cycle (see Handout) Vascular Seed Plants Seed plants are the most plentiful plants in the biosphere Seed coat and stored food allow an embryo to survive harsh conditions during long period of dormancy Het ...
... Dominant sporophyte produces windblown spores Whisk fern, Psilotum Diversity of ferns Fern Life Cycle (see Handout) Vascular Seed Plants Seed plants are the most plentiful plants in the biosphere Seed coat and stored food allow an embryo to survive harsh conditions during long period of dormancy Het ...
Honey Bees Keep Out!
... (We had gone to this area because it was the site of the October 28, 1983 magnitude 7.3 earthquake that lifted Borah Peak seven feet from 12,655 feet to its current elevation of 12,662. My brother and I ended up sitting in the middle of the road taking photos of these fascinating flowers). Bees do vi ...
... (We had gone to this area because it was the site of the October 28, 1983 magnitude 7.3 earthquake that lifted Borah Peak seven feet from 12,655 feet to its current elevation of 12,662. My brother and I ended up sitting in the middle of the road taking photos of these fascinating flowers). Bees do vi ...
4.4 Plants
... 24) Some flowers have both male and female parts and can pollinate themselves. a. *true b. false 25) The tip of the pistil is called the stigma. It is sticky so ________ will stick to it. a. *pollen b. dust 26) When pollen grains land on the pistil, they are carried by a long pollen tube to the : ...
... 24) Some flowers have both male and female parts and can pollinate themselves. a. *true b. false 25) The tip of the pistil is called the stigma. It is sticky so ________ will stick to it. a. *pollen b. dust 26) When pollen grains land on the pistil, they are carried by a long pollen tube to the : ...
Survey of the Phyla- Plantae IION
... parallel veins, three carpels, six stamen and a fibrous root system. What is the best classification of this plant? A) gymnosperm that is a monocot B) gymnosperm that is a dicot C) angiosperm that is a monocot D) angiosperm that is a dicot ...
... parallel veins, three carpels, six stamen and a fibrous root system. What is the best classification of this plant? A) gymnosperm that is a monocot B) gymnosperm that is a dicot C) angiosperm that is a monocot D) angiosperm that is a dicot ...
Structure of Flower
... male gametophytes, which are called pollen grains. As tiny as it is, the pollen grain makes up the entire male gametophyte stage of the gymnosperm life cycle. One of the haploid nuclei in the pollen grain will divide later to produce two sperm nuclei. The more familiar seed cones, which produce fema ...
... male gametophytes, which are called pollen grains. As tiny as it is, the pollen grain makes up the entire male gametophyte stage of the gymnosperm life cycle. One of the haploid nuclei in the pollen grain will divide later to produce two sperm nuclei. The more familiar seed cones, which produce fema ...
Native Plants and Pollinators Lesson Plan (Grow Native! Curriculum)
... a. Flowers are a very important part of the plant life cycle. They can self-pollinate, use wind pollination, or use their petals and nectar to attract pollinators such as bees, bats, hummingbirds, and other insects to the plants. Then these pollinators assist with pollination which leads to the prod ...
... a. Flowers are a very important part of the plant life cycle. They can self-pollinate, use wind pollination, or use their petals and nectar to attract pollinators such as bees, bats, hummingbirds, and other insects to the plants. Then these pollinators assist with pollination which leads to the prod ...
Life Science Chapter 1: How Plants Live and Grow Sequencing
... 3. pollinate- to carry pollen to the stemlike part of a flower Notes • Petals are the outside part of flowers. • Pollen is made at the end of the stemlike part of the flower. • When pollen moves from the stemlike part to the center of the flower, seeds can begin to form. This is called pollination. ...
... 3. pollinate- to carry pollen to the stemlike part of a flower Notes • Petals are the outside part of flowers. • Pollen is made at the end of the stemlike part of the flower. • When pollen moves from the stemlike part to the center of the flower, seeds can begin to form. This is called pollination. ...
Pollination
Pollination is a process by which pollen is transferred from the anther to the stigma of the plant, thereby enabling fertilization and reproduction. It is unique to the angiosperms, the flower-bearing plants.In spite of a common perception that pollen grains are gametes, like the sperm cells of animals, this is incorrect; pollination is an event in the alternation of generations. Each pollen grain is a male haploid gametophyte, adapted to being transported to the female gametophyte, where it can effect fertilization by producing the male gamete (or gametes), in the process of double fertilization). A successful angiosperm pollen grain (gametophyte) containing the male gametes is transported to the stigma, where it germinates and its pollen tube grows down the style to the ovary. Its two gametes travel down the tube to where the gametophyte(s) containing the female gametes are held within the carpel. One nucleus fuses with the polar bodies to produce the endosperm tissues, and the other with the ovule to produce the embryo Hence the term: ""double fertilization"".In gymnosperms, the ovule is not contained in a carpel, but exposed on the surface of a dedicated support organ, such as the scale of a cone, so that the penetration of carpel tissue is unnecessary. Details of the process vary according to the division of gymnosperms in question.The receptive part of the carpel is called a stigma in the flowers of angiosperms. The receptive part of the gymnosperm ovule is called the micropyle. Pollination is a necessary step in the reproduction of flowering plants, resulting in the production of offspring that are genetically diverse.The study of pollination brings together many disciplines, such as botany, horticulture, entomology, and ecology. The pollination process as an interaction between flower and pollen vector was first addressed in the 18th century by Christian Konrad Sprengel. It is important in horticulture and agriculture, because fruiting is dependent on fertilization: the result of pollination. The study of pollination by insects is known as anthecology.