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Chapter 22 The Plant Kingdom
Chapter 22 The Plant Kingdom

... • Angiosperms are plants that produce flowers and have their seeds enclosed in fruit. • Fruit is a modification of the ovary wall into a special structure that contains the seeds. • Flower is the structure, composed of highly modified leaves, that is responsible for sexual reproduction. ...
Plants and People
Plants and People

... A. Is the flower actinomorphic (regular) or zygomorphic (irregular)? B. How many sepals are present? Petals? Stamens? Carpels? To count carpels, count the locules, styles, style branches, and/or the zones of placentation by cross- sectioning the ovary. C. Is the ovary inferior or superior? D. Is the ...
Angiosperms
Angiosperms

... however, as in the palms and agaves. ...
General Plant Life Cycle
General Plant Life Cycle

... – Brightly colored to attract pollinators • Open petals & sepals reveal male and female structures ...
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plants vascular systems
plants vascular systems

... brown. Sepals are leaf like structures that surround and protect the flower before it blooms. Color the sepals green. Petals are the colorful part of the flower that attracts insects and even other small animals, such as mice, birds, and bats. Color the petals a bright color of your choice. All flow ...
Gymnosperms & The Life Cycle of the Pines
Gymnosperms & The Life Cycle of the Pines

... One of each four megaspores produced by meiosis develops into a female gametophyte within an ovule (megasporangium). Once the male and female cones appear, female is normally bigger, it takes approximately three years to produce male and female gametophytes, get pollinated and form mature seeds. ...
Ncumisa_Mnotoza
Ncumisa_Mnotoza

... The male cone releases pollen to fertilise the ovum. The pollen is transported by wind to the female cone. When the female gamete is fertilized it is called a zygote that grows into an embryo.The embyro has integument cells that surround it and altogether can be found in the seed. When the seed is m ...
7TH GRADE LIFE SCIENCE LIVING ORGANISMS UNIT TEST
7TH GRADE LIFE SCIENCE LIVING ORGANISMS UNIT TEST

... 34. How are angiosperms and gymnosperms alike and different?  Alike- Kingdom Plantae, both have seeds, have pollen, sperm fertilize the egg  Different – Gymnosperms produce cones, seeds are found on scales or cones, asexual, leaves are scalelike or needle-like, pollination by wind; Angiosperms pro ...
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ID Guide

... is comprised of two petal lobes and the lower “lip” is comprised of three small lobes. The flowers are bisexual, which means they have both male and female reproductive organs. At the peak of flowering, the flower clusters will include closed buds, open fresh flowers, and drying flowers that are dev ...
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... heterostylism is known. One type of flower has long pistils and short stamens (pin type). The other type has long stamens and short pistils (thru type). There are also plants with equal length of pistils and stamens in flowers (Vančurová et al., 1966; Janovská et al., 2008). Samborova at al. (1989) ...
Male Sex Organs
Male Sex Organs

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Many plants reproduce with flowers and fruit.

... The relationship between angiosperms and their pollinators can be highly specialized. Sometimes the nectar is located in a tube-shaped flower. Only certain animals, for example hummingbirds with long, slender beaks, can pollinate those flowers. Some flowers bloom at night. These flowers attract moth ...
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modern plants - CK
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... colorful petals and nectar to attract insects and animals that could carry pollen from flower to flower, which was more efficient than depending on the wind to spread pollen. Flowers developed a way to "hide" their nectar from all except specific pollinators. This way the pollinators are more likely ...
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10B - Plant Systems Review

... Fertilization begins when a pollen tube grows into _______ pollen travels down the tube and reaches ______ and then enters _____ (egg)  egg & sperm unite to form a 2n - zygote (fertilized egg)  zygote develops into _______. ...
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... of tissue protecting embryo Seeds have supply of stored energy so embryo can wait for good germination conditions and use stored energy for early growth ...
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... is called the gametophyte is larger and more conspicuous than the haploid stage develops from a spore produces eggs and sperm 13. The eggs of seed plants are fertilized within ovules, and the ovules then develop into _____. seeds spores gametophytes 14. The cells within pollen grains are _____ and t ...
View Teacher`s Guide PDF (F.P.O.)
View Teacher`s Guide PDF (F.P.O.)

... temperatures, but some seeds need a period of cold temperatures before they germinate. Some seeds will not grow until the intense heat of a forest fire stimulates them. Understand that some plants can pollinate themselves while others require pollination from separate individuals. The problem is mov ...
Seed and plant growth activity pack - Sunflower jigsaw
Seed and plant growth activity pack - Sunflower jigsaw

... made up of an anther and a filament and looks a bit like a lollipop. The anther contains pollen. Pollen is the male sex cell. It must be moved to the female part of another flower of the same species. The female part of the flower is called the carpel. It is made up of a stigma, a style and an ovary ...
Readers’ Theater Language Arts Support
Readers’ Theater Language Arts Support

... high school biology class, we learned that pollen grains form inside the stamen, which is the male reproductive structure of a plant. Plants are pollinated when these grains are transferred to the stigma, located at the top of the pistil, which is the female reproductive structure of a plant. I thou ...
Colonization of Land By Plants and Fungi
Colonization of Land By Plants and Fungi

... Seed plants – Gymnosperms and Angiosperms • Gymnosperms (naked seed) and angiosperms (flowering plants) • Contain sporophyte embryo and stored food within a protective seed coat • Allows survival during harsh conditions • Heterosporous, 2 types of gametophytes (m/f) • Pollen grains – male gametophy ...
Plants and fungi evolved together as life moved onto land over 400
Plants and fungi evolved together as life moved onto land over 400

... •Female cones are larger. Scales bear a pair of ovules (sporangia with a covering, or integument). Within the ovule, one of the four products of meiosis develop into a tiny, multicellular, “female” gametophyte. •Male cones are smaller, and scales bear many sporangia that make spores by meiosis. Spor ...
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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.
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