FEBRUARY – The Amazing Sex Life of Orchids This is a talking
... rocks, in the ground or under it, in tropical rain forests, in grasslands, or on high mountains. Today there are 35,000 different species of orchids. Orchids had reproduction on their agenda from the beginning. Each orchid developed at exactly the same time as the specific bee, fly, wasp, ant, moth, ...
... rocks, in the ground or under it, in tropical rain forests, in grasslands, or on high mountains. Today there are 35,000 different species of orchids. Orchids had reproduction on their agenda from the beginning. Each orchid developed at exactly the same time as the specific bee, fly, wasp, ant, moth, ...
17. Plants, Fungi, and the Colonization of Land
... Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings ...
... Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings ...
Flower opening and closure: an update
... flower heads stayed open until late afternoon. Early closure due to pollination was also found in Crepis biennis and Leontodon autumnalis, but not in Taraxacum officinale (all in the Asteraceae). Early closure following pollination was not always permanent. Relatively young flower heads (of C. bien ...
... flower heads stayed open until late afternoon. Early closure due to pollination was also found in Crepis biennis and Leontodon autumnalis, but not in Taraxacum officinale (all in the Asteraceae). Early closure following pollination was not always permanent. Relatively young flower heads (of C. bien ...
Stingless bees - IFES Symposium on Climate Change
... are threatened Since stingless bees are the main pollinators of various flowering plants, any poisoning with insecticide sprays will affect their populations. Unsustainable harvesting of stingless bees honey by the use of fire and also exposing the bees pose threat to their survival. ...
... are threatened Since stingless bees are the main pollinators of various flowering plants, any poisoning with insecticide sprays will affect their populations. Unsustainable harvesting of stingless bees honey by the use of fire and also exposing the bees pose threat to their survival. ...
the distribution of a male sterile form of ti
... upon humans for its reproduction would seemingly be difficult to reconcile with its broad distribution the islands of East Polynesia, where it is often described as “growing wild” in native forests, at high elevations, and in isolated and extreme environments such as sheer cliffs (Gill and Sykes 199 ...
... upon humans for its reproduction would seemingly be difficult to reconcile with its broad distribution the islands of East Polynesia, where it is often described as “growing wild” in native forests, at high elevations, and in isolated and extreme environments such as sheer cliffs (Gill and Sykes 199 ...
A Cotton Gene Encoding MYB-Like Transcription Factor is
... The stamen, the male reproductive organ in flowering plants, consists of an anther, a space for pollen development and a filament providing the anther with structural support and nutrients. The anther is made up of the anther wall which has four cell layers (epidermis, endothecium, middle layer and ...
... The stamen, the male reproductive organ in flowering plants, consists of an anther, a space for pollen development and a filament providing the anther with structural support and nutrients. The anther is made up of the anther wall which has four cell layers (epidermis, endothecium, middle layer and ...
Understanding Our Environment - McGraw Hill Higher Education
... Flower - reproductive organs that employ bright colors to attract pollinators and nectar to induce entrance into the flower to contact pollen grains. Johnson - The Living World: 3rd Ed. - All Rights Reserved - McGraw Hill Companies ...
... Flower - reproductive organs that employ bright colors to attract pollinators and nectar to induce entrance into the flower to contact pollen grains. Johnson - The Living World: 3rd Ed. - All Rights Reserved - McGraw Hill Companies ...
Introduction to Plants - Trimble County Schools
... • Roots are organs that anchor vascular plants • They enable vascular plants to absorb water and nutrients from the soil –Roots may have evolved from subterranean stems © 2011 Pearson Education, Inc. ...
... • Roots are organs that anchor vascular plants • They enable vascular plants to absorb water and nutrients from the soil –Roots may have evolved from subterranean stems © 2011 Pearson Education, Inc. ...
Glossary - Botany Angiosperm
... Dehiscence: (L.de, down; hiscere, split open) The opening of an anther, fruit, or other structure, which permits the escape of reproductive bodies contained within. Dormancy: (L. dormire, to sleep) A special condition of arrested growth which the plant and such plant parts as buds and seeds do not b ...
... Dehiscence: (L.de, down; hiscere, split open) The opening of an anther, fruit, or other structure, which permits the escape of reproductive bodies contained within. Dormancy: (L. dormire, to sleep) A special condition of arrested growth which the plant and such plant parts as buds and seeds do not b ...
Lesson 4.5 Flower Power
... The flower industry in the United States earns over five billion dollars each year. Although there is plenty of money to be made from the sale of flowers, the purpose of the flower has far greater implications for the survival of a plant species. Lesson 4.5 Flower Power is designed to provide basic ...
... The flower industry in the United States earns over five billion dollars each year. Although there is plenty of money to be made from the sale of flowers, the purpose of the flower has far greater implications for the survival of a plant species. Lesson 4.5 Flower Power is designed to provide basic ...
29LecturePresentation-1
... • Additional derived traits such as a cuticle and secondary compounds evolved in many plant species • Symbiotic associations between fungi and the first land plants may have helped plants without true roots to obtain nutrients Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin ...
... • Additional derived traits such as a cuticle and secondary compounds evolved in many plant species • Symbiotic associations between fungi and the first land plants may have helped plants without true roots to obtain nutrients Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin ...
Organisms are not immortal
... Pollination: the transfer of pollen grains from anthers to the stigmas; external agents are needed - (1) by _______________ (2) by ________________ ...
... Pollination: the transfer of pollen grains from anthers to the stigmas; external agents are needed - (1) by _______________ (2) by ________________ ...
2002 Synopsis of Phyllanthus subgenus Kirganelia
... staminate disk dissected (less commonly entire); stamens (3-) 4—6, filaments free or the longer 2 or 3 connate; anthers dehiscing longitudinally, usually muticous (rarely apiculate); pollen grains ± spheroidal, 3- (4-) colporate, colpi most marginate, often meeting at poles, usually with one germ po ...
... staminate disk dissected (less commonly entire); stamens (3-) 4—6, filaments free or the longer 2 or 3 connate; anthers dehiscing longitudinally, usually muticous (rarely apiculate); pollen grains ± spheroidal, 3- (4-) colporate, colpi most marginate, often meeting at poles, usually with one germ po ...
Plant Classification
... • Sporophyte phase – Dominant stage – Sporangia produces haploid spores – Spores released into air ...
... • Sporophyte phase – Dominant stage – Sporangia produces haploid spores – Spores released into air ...
MAGNOLIOPHYTA (FLOWERING PLANTS): A LOGICAL AND
... effected pollination. The reactions of the plant to the insects munching away of reproductive structures (stamens, pollens and carpels) were of two types. The first one was the production of alternative food and the second one was the reduction of the long thalamus (seen in Magnoliaceae) to a small ...
... effected pollination. The reactions of the plant to the insects munching away of reproductive structures (stamens, pollens and carpels) were of two types. The first one was the production of alternative food and the second one was the reduction of the long thalamus (seen in Magnoliaceae) to a small ...
Beyond pine Cones: An Introduction to Gymnosperms
... a pine, with its familiar woody cones, but they may not know that this and other conifers are gymnosperms. Or, they may think that conifers are the only plants in the gymnosperm group. Undoubtedly the often large-flowered angiosperms (flowering plants) are the better known group within the seed plan ...
... a pine, with its familiar woody cones, but they may not know that this and other conifers are gymnosperms. Or, they may think that conifers are the only plants in the gymnosperm group. Undoubtedly the often large-flowered angiosperms (flowering plants) are the better known group within the seed plan ...
The evolution of plant–insect mutualisms
... Mutualisms, or cooperative interactions between species, have long received attention from natural history enthusiasts, forming a centerpiece of both nature documentaries and biology textbooks. After a prolonged delay, mutualisms have also begun to receive serious attention from ecologists and evolu ...
... Mutualisms, or cooperative interactions between species, have long received attention from natural history enthusiasts, forming a centerpiece of both nature documentaries and biology textbooks. After a prolonged delay, mutualisms have also begun to receive serious attention from ecologists and evolu ...
Chapter 29: Plant Diversity I – How Plants Colonized Land
... In addition to providing the means to transport materials internally, a vascular system also provides structural support. Fort both these reasons, vascular plants can be much larger than nonvascular plants. The sporophyte is much more prominent than the gametophyte. ...
... In addition to providing the means to transport materials internally, a vascular system also provides structural support. Fort both these reasons, vascular plants can be much larger than nonvascular plants. The sporophyte is much more prominent than the gametophyte. ...
2/26/2015 1 Chapter 29:
... Additional Derived Characteristics of Plants In addition to the key five key characteristics of land plants, many plants also have: • a waxy cuticle covering their epidermal tissues • microscopic openings called stomata on their leaves • mycorrhizae, a mutualistic symbiosis between beneficial fungi ...
... Additional Derived Characteristics of Plants In addition to the key five key characteristics of land plants, many plants also have: • a waxy cuticle covering their epidermal tissues • microscopic openings called stomata on their leaves • mycorrhizae, a mutualistic symbiosis between beneficial fungi ...
topic #3: angiosperm morphology and flowering
... Some plant responses overlap. Cold and drought seem to satisfy the same “need.” One can therefore “fool” plants in arid environments by withholding irrigation water. Thus, peaches can be produced in some areas of South America that are warm, but dry. In southern California, where it never gets cold, ...
... Some plant responses overlap. Cold and drought seem to satisfy the same “need.” One can therefore “fool” plants in arid environments by withholding irrigation water. Thus, peaches can be produced in some areas of South America that are warm, but dry. In southern California, where it never gets cold, ...
Parents and Offspring
... sexual reproduction? One major advantage of sexual reproduction is that it promotes variety in a species. Sexual reproduction gives rise to offspring that may be better suited to environmental changes than either ...
... sexual reproduction? One major advantage of sexual reproduction is that it promotes variety in a species. Sexual reproduction gives rise to offspring that may be better suited to environmental changes than either ...
Bryophytes and Ferns
... b. the vascular generation alternates with the nonvascular generation c. male plants alternate with female plants d. antheridia alternate with archegonia e. all of these occur ...
... b. the vascular generation alternates with the nonvascular generation c. male plants alternate with female plants d. antheridia alternate with archegonia e. all of these occur ...
The Living World - Chapter 18 - McGraw Hill Higher Education
... Attracted to scented, white or pale-colored flowers ...
... Attracted to scented, white or pale-colored flowers ...
The Land Plants - Del Mar College
... Only seed-bearing vascular plants release pollen grains and seeds • Pollen grain: A walled, immature gametophyte that will give rise to the sperm • Seed: An embryo sporophyte and some nutritive tissue enclosed inside a waterproof coat ...
... Only seed-bearing vascular plants release pollen grains and seeds • Pollen grain: A walled, immature gametophyte that will give rise to the sperm • Seed: An embryo sporophyte and some nutritive tissue enclosed inside a waterproof coat ...
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.