Document
... 1. Establishing polarity: starts @ 1st division 2. Establishing radial patterning: periclinal divisions form layers that become dermal, ground & vascular tissue 3. Forming the root and shoot meristems 4. Forming cotyledons & roots Body plan is formed during embryogenesis: seedling that germinates is ...
... 1. Establishing polarity: starts @ 1st division 2. Establishing radial patterning: periclinal divisions form layers that become dermal, ground & vascular tissue 3. Forming the root and shoot meristems 4. Forming cotyledons & roots Body plan is formed during embryogenesis: seedling that germinates is ...
Resource allocation to growth, reproduction and survival in
... the optimal age-specific allocation of resources to growth, survival and reproduction (Charlesworth, 1980, p. 237). Bell (1984a) summarizes the different experiments which have attempted to detect and evaluate reproductive cost. He argues that the results of these experiments are not all relevant. I ...
... the optimal age-specific allocation of resources to growth, survival and reproduction (Charlesworth, 1980, p. 237). Bell (1984a) summarizes the different experiments which have attempted to detect and evaluate reproductive cost. He argues that the results of these experiments are not all relevant. I ...
Ch. 38 - HCC Learning Web
... • The embryo sac, or female gametophyte, develops within the ovule • Within an ovule, two integuments surround a megasporangium • One cell in the megasporangium undergoes meiosis, producing four megaspores, only one of which survives • The megaspore divides, producing a large cell with eight nuclei ...
... • The embryo sac, or female gametophyte, develops within the ovule • Within an ovule, two integuments surround a megasporangium • One cell in the megasporangium undergoes meiosis, producing four megaspores, only one of which survives • The megaspore divides, producing a large cell with eight nuclei ...
Kingdom Plantae
... In fact, the gametophyte generation is the major stage in the life of mosses and an independent plant in ferns. However, the gametophyte is only an inconspicuous structure in angiosperms and other "higher" plants. ...
... In fact, the gametophyte generation is the major stage in the life of mosses and an independent plant in ferns. However, the gametophyte is only an inconspicuous structure in angiosperms and other "higher" plants. ...
AP Biology Review Chapters 23-27 Review Questions Chapter 23
... 5. What is the general term for nonvascular plants? What is the dominant generation in nonvascular plants? 6. What is required for fertilization to occur in nonvascular plants? What are the three main types of nonvascular plants? 7. What does “homosporous” mean? Heterosporous? What do xylem and phlo ...
... 5. What is the general term for nonvascular plants? What is the dominant generation in nonvascular plants? 6. What is required for fertilization to occur in nonvascular plants? What are the three main types of nonvascular plants? 7. What does “homosporous” mean? Heterosporous? What do xylem and phlo ...
Ragweed (Ambrosia artemisiifolia L.) Genus: Ambrosia (am
... is blamed for hay-fever, is innocent of this malady. The very numerous, tiny, non-showy, greenish flowers grow along long spikes from August until the end of summer. The drabness of the flowers do not attract insects. The fine yellow grains of pollen are very small and easily carried by the wind whi ...
... is blamed for hay-fever, is innocent of this malady. The very numerous, tiny, non-showy, greenish flowers grow along long spikes from August until the end of summer. The drabness of the flowers do not attract insects. The fine yellow grains of pollen are very small and easily carried by the wind whi ...
File - thebiotutor.com
... In plants: o Male gametes = Pollen cells o Female gametes = Ova or egg cells Gametes are formed in Anther and ovaries from the meiosis of reproductive cells Process of Meiosis: 1. Chromosomes of the reproductive cell fatten and become visible 2. Each chromosome makes an exact cop of itself 3. Ch ...
... In plants: o Male gametes = Pollen cells o Female gametes = Ova or egg cells Gametes are formed in Anther and ovaries from the meiosis of reproductive cells Process of Meiosis: 1. Chromosomes of the reproductive cell fatten and become visible 2. Each chromosome makes an exact cop of itself 3. Ch ...
CHAPTER 17
... male and female gametophytes, and zygotes. C. Meiosis in the anthers leads to haploid spores that undergo mitosis and develop into the male gametophytes (pollen grains). D. Meiosis in the ovules leads to haploid spores that undergo mitosis and develop into the female gametophytes, each of which prod ...
... male and female gametophytes, and zygotes. C. Meiosis in the anthers leads to haploid spores that undergo mitosis and develop into the male gametophytes (pollen grains). D. Meiosis in the ovules leads to haploid spores that undergo mitosis and develop into the female gametophytes, each of which prod ...
Examining Flowers and Fruits
... female flowers on the same plant are known as monoecious plants. – An example is corn. Plant species with the male flowers and female flowers on separate plants are known as dioecious plants. – Example is the grape of Cottonwood ...
... female flowers on the same plant are known as monoecious plants. – An example is corn. Plant species with the male flowers and female flowers on separate plants are known as dioecious plants. – Example is the grape of Cottonwood ...
Perspectives in Plant Ecology, Evolution and Systematics Floral
... Gumbert, 2001). The relative importance of each sense may vary in the various plant–pollinator interactions. Olfactory signals are particularly important in plants that bloom at night when visual characteristics are less important for their pollinators (Jürgens et al., 2002; Carvalho et al., 2012); ...
... Gumbert, 2001). The relative importance of each sense may vary in the various plant–pollinator interactions. Olfactory signals are particularly important in plants that bloom at night when visual characteristics are less important for their pollinators (Jürgens et al., 2002; Carvalho et al., 2012); ...
Lesson 01b Parts of a Flower PPT
... which catches and holds pollen. • The style is the tube-like structure that connects the stigma and the ovary. • The ovary is the enlarged portion at the base of the pistil. The ovary produces egg cells, which develop into seeds when fertilized. ...
... which catches and holds pollen. • The style is the tube-like structure that connects the stigma and the ovary. • The ovary is the enlarged portion at the base of the pistil. The ovary produces egg cells, which develop into seeds when fertilized. ...
A SHORT-CYCLE SUNFLOWER LINE DERIVED FROM
... median part of the stem, becoming alternate and gradually smaller above; the leaves and inflorescences are larger than in the wild parent. All plants are as vigorous or nearly as vigorous as the parents. They all show normal fertility, with abundant production of viable pollen. We have not detected ...
... median part of the stem, becoming alternate and gradually smaller above; the leaves and inflorescences are larger than in the wild parent. All plants are as vigorous or nearly as vigorous as the parents. They all show normal fertility, with abundant production of viable pollen. We have not detected ...
Paleontology and Life, part 3
... • Most scienGsts classify Green Algae as Plants • Some mulGcellular algae are adriQ in the ocean, while some others are anchored to the boXom • Most are soQ, fleshy organisms, but some secrete a skeleton of calcium carbonate (CaCO3) • Fragments of such skeletons are major consGtuents of mar ...
... • Most scienGsts classify Green Algae as Plants • Some mulGcellular algae are adriQ in the ocean, while some others are anchored to the boXom • Most are soQ, fleshy organisms, but some secrete a skeleton of calcium carbonate (CaCO3) • Fragments of such skeletons are major consGtuents of mar ...
Asteraceae
... inferior ovary; fruit an achene (cypsela), often with adherent pappus (calyx parts) Significant features: flowers densely arranged into indeterminate heads (capitula), surrounded by involucral bracts (phyllaries), often with differentiation in inner flowers and outer flowers (disk and ray flowers); ...
... inferior ovary; fruit an achene (cypsela), often with adherent pappus (calyx parts) Significant features: flowers densely arranged into indeterminate heads (capitula), surrounded by involucral bracts (phyllaries), often with differentiation in inner flowers and outer flowers (disk and ray flowers); ...
Chapter 12 - Southern Matters
... Overview of Non-Flowering Plants. Know the distinguishing characteristics of plants. Know the plant adaptations required for terrestrial life. Know the adaptations for terrestrial life displayed by angiosperms and how they are advantageous. Bryophytes. Distinguish bryophytes from green algae 1 and f ...
... Overview of Non-Flowering Plants. Know the distinguishing characteristics of plants. Know the plant adaptations required for terrestrial life. Know the adaptations for terrestrial life displayed by angiosperms and how they are advantageous. Bryophytes. Distinguish bryophytes from green algae 1 and f ...
Chapter-3 PLANT KINGDOM
... within the female gametophyte which is retained on parent sporophyte. This is an important step in evolution and is found in Selaginella and Salvinia among the pteridophytes. GYMNOSPERMS : • Have naked seeds as the ovules are not enclosed by any ovary wall and remain exposed. • Male cone has microsp ...
... within the female gametophyte which is retained on parent sporophyte. This is an important step in evolution and is found in Selaginella and Salvinia among the pteridophytes. GYMNOSPERMS : • Have naked seeds as the ovules are not enclosed by any ovary wall and remain exposed. • Male cone has microsp ...
Seeded Plants
... both male and female structures • Male gametophytes are contained within pollen grains produced by the microsporangia of anthers • The female gametophyte, or embryo sac, develops within an ovule contained within an ovary at the base of a stigma • Most flowers have mechanisms to ensure cross-pollinat ...
... both male and female structures • Male gametophytes are contained within pollen grains produced by the microsporangia of anthers • The female gametophyte, or embryo sac, develops within an ovule contained within an ovary at the base of a stigma • Most flowers have mechanisms to ensure cross-pollinat ...
Parts of a Flower Flipbook
... are listed below Sepal – often green & resemble leaves; protects bud before it opens and protects flower while developing. The sepals collectively are known as the calyx Petal s – together, the petals form a corolla; used by flower to attract certain pollinators Anther – pollen bearing portion of th ...
... are listed below Sepal – often green & resemble leaves; protects bud before it opens and protects flower while developing. The sepals collectively are known as the calyx Petal s – together, the petals form a corolla; used by flower to attract certain pollinators Anther – pollen bearing portion of th ...
3 slides/page - University of San Diego Home Pages
... 1. Alternation of generations – Evolved independently in fungi, cellular slime molds, brown algae, red algae, and ...
... 1. Alternation of generations – Evolved independently in fungi, cellular slime molds, brown algae, red algae, and ...
PowerPoint
... female flowers on the same plant are known as monoecious plants. – An example is corn. Plant species with the male flowers and female flowers on separate plants are known as dioecious plants. – Example is the grape of Cottonwood ...
... female flowers on the same plant are known as monoecious plants. – An example is corn. Plant species with the male flowers and female flowers on separate plants are known as dioecious plants. – Example is the grape of Cottonwood ...
vesca. - Genetics
... cytoplasm. Apparently the seven-chromosome gametes, which presumably are sometimes formed, are not functional-possibly because of certain imaginable cytoplasmic restrictions on functionability. But there seems to be no good reason why the fertilized egg cell in such a case should not eliminate the e ...
... cytoplasm. Apparently the seven-chromosome gametes, which presumably are sometimes formed, are not functional-possibly because of certain imaginable cytoplasmic restrictions on functionability. But there seems to be no good reason why the fertilized egg cell in such a case should not eliminate the e ...
Cotton-Fruit-Development-The-Square
... much more likely than by pollen from colored fields. As non-pesticide methods of insect control are developed (for example genetically engineered resistance), out-crossing may become more commonplace. Cotton pollen is extremely sensitive to moisture and ruptures within 5 seconds upon contact with li ...
... much more likely than by pollen from colored fields. As non-pesticide methods of insect control are developed (for example genetically engineered resistance), out-crossing may become more commonplace. Cotton pollen is extremely sensitive to moisture and ruptures within 5 seconds upon contact with li ...
Plant Diversity I
... Structural support: no buoyancy from water, so lignin became embedded into cell walls Vascular system: Xylem: conducts water and minerals from roots. Composed of dead, tube-shaped cells and provides structural support Phloem: conducts food throughout the plant. Composed of living cells organised int ...
... Structural support: no buoyancy from water, so lignin became embedded into cell walls Vascular system: Xylem: conducts water and minerals from roots. Composed of dead, tube-shaped cells and provides structural support Phloem: conducts food throughout the plant. Composed of living cells organised int ...
Plants Challenges of terrestriality Advantages of terrestriality
... Gymnosperms: Conifers & Allies 1. Success marked by change in life cycle 2. Evolution 3. Four divisions ...
... Gymnosperms: Conifers & Allies 1. Success marked by change in life cycle 2. Evolution 3. Four divisions ...
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.