Reproduction
... in moist soil which give rise to adventitious roots, and grow into new plants. iii) Layering: Layering is the development of roots on a stem while it is still attached to the parent plant. The stem or the branch that develops adventitious roots while still attached to the parent plant is called a la ...
... in moist soil which give rise to adventitious roots, and grow into new plants. iii) Layering: Layering is the development of roots on a stem while it is still attached to the parent plant. The stem or the branch that develops adventitious roots while still attached to the parent plant is called a la ...
Angiosperms or Flowering Plants the phylum Magnoliophyta
... structure comprising three main parts – often referred to as carpel(s) ...
... structure comprising three main parts – often referred to as carpel(s) ...
The Arabidopsis Plastidic Glucose 6
... grains also accumulate intracellular lipid bodies, which act as reserves of energy and biomolecules for pollen germination. The pollen grain—the male or microgametophyte—develops within the anther in the stamen. The postmeiotic haploid microspore undergoes an asymmetric mitosis (pollen mitosis I), w ...
... grains also accumulate intracellular lipid bodies, which act as reserves of energy and biomolecules for pollen germination. The pollen grain—the male or microgametophyte—develops within the anther in the stamen. The postmeiotic haploid microspore undergoes an asymmetric mitosis (pollen mitosis I), w ...
video slide - Course
... Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
... Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings ...
Systematic Implications of DNA variation in subfamily Opuntioideae
... Flowers and Their Evolution ...
... Flowers and Their Evolution ...
Archaefructus – angiosperm precursor or specialized early
... lateral stalks along an axis. The stalks often branch several times, but occasionally there are only two or three synangia grouped closely on an unbranched stalk, suggesting the arrangement in Archaefructus. However, Caytonanthus synangia are radial structures with four equally spaced microsporangia ...
... lateral stalks along an axis. The stalks often branch several times, but occasionally there are only two or three synangia grouped closely on an unbranched stalk, suggesting the arrangement in Archaefructus. However, Caytonanthus synangia are radial structures with four equally spaced microsporangia ...
Farm day teacher Sunflowers
... Bees help flowers make seeds and fruits. Bees go to flowers in your garden to find pollen (the powder on the flower) and nectar which is a sweet liquid. The markings on a flower guide the bee right into where the pollen or nectar is. All flowers have pollen. Bees gather pollen to feed their babies w ...
... Bees help flowers make seeds and fruits. Bees go to flowers in your garden to find pollen (the powder on the flower) and nectar which is a sweet liquid. The markings on a flower guide the bee right into where the pollen or nectar is. All flowers have pollen. Bees gather pollen to feed their babies w ...
Trait selection in flowering plants: how does sexual selection
... Here, we review a handful of studies that have investigated how traits that affect pollinator visitation can be considered as being under sexual selection via either male or female function (see Table 1 for an overview). We chose these studies because they investigated male and female function using ...
... Here, we review a handful of studies that have investigated how traits that affect pollinator visitation can be considered as being under sexual selection via either male or female function (see Table 1 for an overview). We chose these studies because they investigated male and female function using ...
Chapter 26 Seedless Plants PP Notes
... – Mitosis – haploid gametes – Antheridia – sperm – Archegonia - egg ...
... – Mitosis – haploid gametes – Antheridia – sperm – Archegonia - egg ...
Chapter 4: Plant Reproduction
... produces the sex cells. But the next time you see some moss growing, get down and look at it closely. If you see any brownish stalks growing up from the tip of the gametophyte plants, you are looking at the sporophyte stage. The sporophyte stage does not carry on photosynthesis. It depends on the ga ...
... produces the sex cells. But the next time you see some moss growing, get down and look at it closely. If you see any brownish stalks growing up from the tip of the gametophyte plants, you are looking at the sporophyte stage. The sporophyte stage does not carry on photosynthesis. It depends on the ga ...
Chapter 10: Plant Reproduction
... produces the sex cells. But the next time you see some moss growing, get down and look at it closely. If you see any brownish stalks growing up from the tip of the gametophyte plants, you are looking at the sporophyte stage. The sporophyte stage does not carry on photosynthesis. It depends on the ga ...
... produces the sex cells. But the next time you see some moss growing, get down and look at it closely. If you see any brownish stalks growing up from the tip of the gametophyte plants, you are looking at the sporophyte stage. The sporophyte stage does not carry on photosynthesis. It depends on the ga ...
Flowering Plants
... As the embryo develops the, its size increases, the cotyledons become much more prominent, and a shoot apex develops between the bases of the two cotyledons. Also, the lower portion of the embryo becomes an elongate hypocotyl, at whose lower tip the primary root will develop from a growing point (th ...
... As the embryo develops the, its size increases, the cotyledons become much more prominent, and a shoot apex develops between the bases of the two cotyledons. Also, the lower portion of the embryo becomes an elongate hypocotyl, at whose lower tip the primary root will develop from a growing point (th ...
NAME: - Oregon State University
... The history of life has been punctuated by several extinctions, based on evidence from the fossil record. The impact of a meteorite may have wiped out the dinosaurs and many forms of marine lifer at the end of the Cretaceous period. Fossils indicate that plants were much less severely affected by th ...
... The history of life has been punctuated by several extinctions, based on evidence from the fossil record. The impact of a meteorite may have wiped out the dinosaurs and many forms of marine lifer at the end of the Cretaceous period. Fossils indicate that plants were much less severely affected by th ...
PLANT EVOLUTION AND DIVERSITY
... 4. The tube carries a sperm that fertilizes the egg to form a zygote. © 2012 Pearson Education, Inc. ...
... 4. The tube carries a sperm that fertilizes the egg to form a zygote. © 2012 Pearson Education, Inc. ...
Draft Orbea variegata fsheet
... The outer sheath of the fruit peels back to expose a mass of seeds, each with a tuft of hair awaiting wind dispersal. Carrion flower can also spread vegetatively via stem fragments moved by people, machinery, animals or water. HABITAT Carrion flower can be found growing on both exposed and sheltered ...
... The outer sheath of the fruit peels back to expose a mass of seeds, each with a tuft of hair awaiting wind dispersal. Carrion flower can also spread vegetatively via stem fragments moved by people, machinery, animals or water. HABITAT Carrion flower can be found growing on both exposed and sheltered ...
Study Guide
... Identify the parts that are the gametophyte generation and the parts that are the sporophyte generation Distinguish between monocots and eudicots Recognize some of the angiosperms that are most important in the life of humans Chapter 35: Plant Structure Describe and compare the 3 basic organs ...
... Identify the parts that are the gametophyte generation and the parts that are the sporophyte generation Distinguish between monocots and eudicots Recognize some of the angiosperms that are most important in the life of humans Chapter 35: Plant Structure Describe and compare the 3 basic organs ...
Ch18_lecture
... called polar nuclei. • This seven-celled organism, called the embryo sac, is the haploid female gametophyte. • The egg is the central small cell at the bottom of the embryo sac, located near an opening in the ovule. Copyright © 2009 Pearson Education Inc. ...
... called polar nuclei. • This seven-celled organism, called the embryo sac, is the haploid female gametophyte. • The egg is the central small cell at the bottom of the embryo sac, located near an opening in the ovule. Copyright © 2009 Pearson Education Inc. ...
Life Cycle of a Pumpkin
... Pumpkin 2: We can be bumpy or smooth, large or small, long or round. They can be orange, white, yellow, or red. Farmer: Each year there is a new crop of pumpkins. Their hard shells have deep lines that go from top to bottom. ...
... Pumpkin 2: We can be bumpy or smooth, large or small, long or round. They can be orange, white, yellow, or red. Farmer: Each year there is a new crop of pumpkins. Their hard shells have deep lines that go from top to bottom. ...
Advances in Environmental Biology Lepidium sativum
... leaves and roots are economically valuable. This important green vegetable consumed by human beings, most typically as a garnish or as a leaf vegetable [22,3]. Persian used to eat the leaves of this plant even before bread was known [19]. This annual herb can reach a height of 60 cm with many branch ...
... leaves and roots are economically valuable. This important green vegetable consumed by human beings, most typically as a garnish or as a leaf vegetable [22,3]. Persian used to eat the leaves of this plant even before bread was known [19]. This annual herb can reach a height of 60 cm with many branch ...
chapter29
... These gametophytes are one to a few cells thick and obtain nutrients and water by direct absorption from the environment. Most mosses do not have conducting tissue. Some species have specialized cells that conduct water and nutrients but lack lignin in their cell walls. The gametophores are anchored ...
... These gametophytes are one to a few cells thick and obtain nutrients and water by direct absorption from the environment. Most mosses do not have conducting tissue. Some species have specialized cells that conduct water and nutrients but lack lignin in their cell walls. The gametophores are anchored ...
Plants before flowers: focus on cycads
... and, since they also carry pollen, are suspected of acting as pollinators for this Supersperms species. When the pollen grain arrives on the female cone it produces a long tube Native bees, belonging to an ancient family, which burrows into the female cone have also been found collecting pollen from ...
... and, since they also carry pollen, are suspected of acting as pollinators for this Supersperms species. When the pollen grain arrives on the female cone it produces a long tube Native bees, belonging to an ancient family, which burrows into the female cone have also been found collecting pollen from ...
department of biological sciences plant form and function (hbzb201)
... The plant includes three major organ systems (roots, stems and leaves) that function in concert to maintain the supply of resources to all parts of the plant body. To allow for growth, new cells are added at specific locations (meristems) throughout the plant body. These new cells are initially unsp ...
... The plant includes three major organ systems (roots, stems and leaves) that function in concert to maintain the supply of resources to all parts of the plant body. To allow for growth, new cells are added at specific locations (meristems) throughout the plant body. These new cells are initially unsp ...
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.