• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
I Love Plants Student Notes
I Love Plants Student Notes

... Carpel– Female part of the flower, which contains sticky stigma where pollen grains land and travel down the style to the ovary and ovules. ...
Biology Plant Classification
Biology Plant Classification

... – whisk ferns and horsetails are close relatives of ferns – ferns have large leaves called fronds ...
Monocots vs. Dicots - Mrs. Kunze Biology Web Site
Monocots vs. Dicots - Mrs. Kunze Biology Web Site

... Importance of Cotyledons • “Cots”- provide food for the embryo. • Once the food is used up, the cotyledons shrivel up and fall off. ...
useful indices in plant reproductive ecology
useful indices in plant reproductive ecology

... given number of pollinators, the number of visits to a given plant in an interval will be proportional to the fraction of open flowers in the population which belong to that plant. This index was developed to study the interaction between Yucca and its specialised pollinator. Before one applies it, ...
Formulas
Formulas

... According to fossil evidence, ferns showed up about 375 mya when club moss and horsetail were the dominant vascular plants. These ferns were treesized, but soon began to diverge Today they are more abundant than their primitive competitors. ...
Gymnosperms
Gymnosperms

... Characters of seed plants male gametophyte •pollen grain = extremely reduced male gametophyte, a few cells •pollen tube – formed by the pollen, grows though sporophytic tissue to deliver sperm cells to egg (in ovule) ...
Plant Reproduction
Plant Reproduction

... adaptive advantage? ...
Seed - SCIS Teachers
Seed - SCIS Teachers

... The ovule develops into a seed • After fertilization, the ovule, containing the triploid central cell and the diploid zygote, begins developing into a seed. • The seed contains proteins, oils, and starches. • The zygote first divides by mitosis to produce two ...
Lecture 6B
Lecture 6B

... specialized for sexual reproduction – specialized shoot that can have up to four rings of modified leaves or sporophylls • in many angiosperm species – pollination is by insects or other animals – from flower to flower – so pollination is more direct than by wind – for angiosperms in dense populatio ...
lesson plan for parts of a flower
lesson plan for parts of a flower

... Students will gain an understanding of the parts of a flower. Background information A plant has many parts: roots that soak up nutrients, water, and provide support, a stem for stability, leaves that make food and the flower. The job of the flower is to pass on the traits of the plant to the next g ...
Lesson: Parts of a Flower
Lesson: Parts of a Flower

... Students will gain an understanding of the parts of a flower. Background information A plant has many parts: roots that soak up nutrients, water, and provide support, a stem for stability, leaves that make food and the flower. The job of the flower is to pass on the traits of the plant to the next g ...
STEMi Lesson Plan Template Teachers Name: Sharmela
STEMi Lesson Plan Template Teachers Name: Sharmela

... Have students dissect the flower they chose. Although each student has his or her own flower, students can dissect their flowers in small groups so that they can share ideas and problem solve together. Each student should dissect his or her flower by carefully removing each part, starting from outsi ...
Kingdom Plantae
Kingdom Plantae

... Also spores produced by the sporophyte generation are retained in the plant and are not released into the environment. All seed plants produce two different types of spores (heterospory). Microspores make the male gametophyte (pollen) and megaspores make the female gametophyte inside a structure cal ...
File
File

... Pollination—the transfer of pollen from the male part of a plant to the female part of a seed plant Self-pollination—pollen transfers from an anther to the stigma within the same flower, as in pea plants Cross-pollination—pollen transfers between two distinct plants ...
On to plants with seeds
On to plants with seeds

... •  Mostly vines with climbing growth habit •  One species (Gnetum gnemon) is a tree, used for rope fiber and food •  Only gymnosperm with reticulate venation of leaves •  Vessel elements in xylem, flower-like ...
Teacher Quality Grant - Gulf Coast State College
Teacher Quality Grant - Gulf Coast State College

... • Stems have many functions. – support leaves and flowers – house most of the vascular system ...
Plants Power Point - Panhandle Area Educational Consortium
Plants Power Point - Panhandle Area Educational Consortium

... • Stems have many functions. – support leaves and flowers – house most of the vascular system ...
Ans. - Testlabz.com
Ans. - Testlabz.com

... (d) Spore formation : In this type of asexual reproduction fungi grow from spores. The spores are asexual reproductive bodies. Each spore is covered by a hard protective coat to withstand unfavourable conditions such as high temperature and low humidity. Under favourable conditions, a spore germinat ...
SBI3U
SBI3U

... Reproduction – What is the flower? (see text p. 484) Flowers  Sexual reproductive structures  Pollination can be by wind (as in gymnosperms) but majority use other organisms  insects, animals  Nectar attract insects, bats, and birds  pollen transferred to them as they visit various flowers (Not ...
Gymnosperms
Gymnosperms

... (ancestral) •coralloid roots with nitrogen-fixing ...
Plant Diversity I: Colonization by Land Plants
Plant Diversity I: Colonization by Land Plants

... develops its pollen tube and two sperm enter into the ovule through the micropyle – fusion of egg nucleus and sperm nucleus  Zygote (2n) – both eggs in the female gametophyte may be fertilized – the ovule with the zygote is now called the seed – the developing embryo is retained within the female g ...
Angiosperms, which evolved in the Cretaceous period
Angiosperms, which evolved in the Cretaceous period

... have a mutualistic pollinator, with the distinctive features of flowers reflecting the nature of the pollination agent . The relationship between pollinator and flower characteristics is one ...
rotation 1 - School Garden Project
rotation 1 - School Garden Project

... Pollination is the transfer of pollen grains from the stamen of one flower to the stigma of the same or another flower. Anything that transfers pollen from one flower to another is called a pollinator. There are more than 100,000 pollinator species, including bees (20,000 species), moths, butterflie ...
Advanced Plant Production Level 4 Student`s Book
Advanced Plant Production Level 4 Student`s Book

... Production of food – vegetables, fruit, cereals and fibre (such as cotton) – can only happen if the plant is able to reproduce. You must have noticed that under natural conditions, plants reproduce themselves. There are two main methods of reproduction or propagation in nature. These methods are sex ...
Gymnosperms
Gymnosperms

... (ancestral) •coralloid roots with nitrogen-fixing ...
< 1 ... 41 42 43 44 45 46 47 48 49 ... 94 >

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.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report