Phylum Bryophyta - findyourtao2011
... -Sperm and egg unite to produce a ZYGOTE (2N: Diploid) that grows and develops inside the archegonium (singular). ...
... -Sperm and egg unite to produce a ZYGOTE (2N: Diploid) that grows and develops inside the archegonium (singular). ...
Plants - NIU Department of Biological Sciences
... evolution was the development of pollen grains and seeds. • Pollen grains are the male gametophyte packaged in a hard coat that allows it to reach the female without having to swim through water. This is a large advantage on dry land. • Seeds are diploid sporophyte embryos, packaged to survive a per ...
... evolution was the development of pollen grains and seeds. • Pollen grains are the male gametophyte packaged in a hard coat that allows it to reach the female without having to swim through water. This is a large advantage on dry land. • Seeds are diploid sporophyte embryos, packaged to survive a per ...
the plant kingdom - National Botanic Gardens
... 2. Female gametophyte (Megasporangia) is contained in an ‘Ovule’ in which the spore grows into the embryo sac[=Megasporangia or Female gemetophyte]). Gametophyte develops into a large endosperm (many thousands of haploid cells) prior to fertilisation. Each megasporangia develops several archegonia ( ...
... 2. Female gametophyte (Megasporangia) is contained in an ‘Ovule’ in which the spore grows into the embryo sac[=Megasporangia or Female gemetophyte]). Gametophyte develops into a large endosperm (many thousands of haploid cells) prior to fertilisation. Each megasporangia develops several archegonia ( ...
How do Organisms Reproduce
... plant. The cells are then placed in an artificial medium where they divide rapidly to form a small group of cells or callus. The callus is transferred to another medium containing hormones for growth and differentiation. The plantlets are then placed in the soil so that they can grow into mature pla ...
... plant. The cells are then placed in an artificial medium where they divide rapidly to form a small group of cells or callus. The callus is transferred to another medium containing hormones for growth and differentiation. The plantlets are then placed in the soil so that they can grow into mature pla ...
BACKGROUND INFORMATION Angiosperms is the name given to
... The stigma, at the top, becomes moist and sticky when mature so that pollen can more easily adhere. The style is the middle part. Depending on the plant species, it may be long and slender, short or even missing. At the bottom of the pistil, the enlarged structure is the ovary. Within the ovary are ...
... The stigma, at the top, becomes moist and sticky when mature so that pollen can more easily adhere. The style is the middle part. Depending on the plant species, it may be long and slender, short or even missing. At the bottom of the pistil, the enlarged structure is the ovary. Within the ovary are ...
Moss: Non-Vascular Plants
... • If spores disperse and land in ideal area, spores germinate and a protonema grows • Protonema are thread like filaments that will develop into gametophyte ...
... • If spores disperse and land in ideal area, spores germinate and a protonema grows • Protonema are thread like filaments that will develop into gametophyte ...
English
... E1-2 to illustrate pollination. Discuss agents of pollination. Ask what problems arise from the use of substances in our environment that destroy the honey bee populations? Use TM: E1-3 to discuss the double fertilization that results from pollination. This would also be a good opportunity to review ...
... E1-2 to illustrate pollination. Discuss agents of pollination. Ask what problems arise from the use of substances in our environment that destroy the honey bee populations? Use TM: E1-3 to discuss the double fertilization that results from pollination. This would also be a good opportunity to review ...
PowerPoint 簡報
... the ovule’s central cell divides, forming a multinucleate “supercell” having a milky consistency. This liquid mass becomes multicellular when cytokinesis partitions the cytoplasm by forming membranes between the nuclei. Eventually, these cells produce cell walls and endosperm becomes solid. • In man ...
... the ovule’s central cell divides, forming a multinucleate “supercell” having a milky consistency. This liquid mass becomes multicellular when cytokinesis partitions the cytoplasm by forming membranes between the nuclei. Eventually, these cells produce cell walls and endosperm becomes solid. • In man ...
Science Form 3 GLA + not Science Form 3 GLA + note e Form 3
... ovaries will stop producing ova when a woman is about 55 years old or when she reaches menopause. The ovum is the largest cell in the female body because it contains dense cytoplasm to provide food to the embryo at the early stage of its development. An ovum that is not fertilised by a sperm can onl ...
... ovaries will stop producing ova when a woman is about 55 years old or when she reaches menopause. The ovum is the largest cell in the female body because it contains dense cytoplasm to provide food to the embryo at the early stage of its development. An ovum that is not fertilised by a sperm can onl ...
Chapter 2 Sexual Reproduction
... Both males and females of all species of Animals and Plants will produce special haploid sex cells called gametes. The gametes have half the DNA (haploid, single stranded) compared to the regular body cells. ...
... Both males and females of all species of Animals and Plants will produce special haploid sex cells called gametes. The gametes have half the DNA (haploid, single stranded) compared to the regular body cells. ...
Seed plants notes
... pollen grain on stigma grows pollen tube from tube nucleus generative nucleus divides to produce 2 sperm cells pollen tube extends towards embryo sac inside female double fertilization; one sperm fertilizes egg nucleus to form diploid zygote; other fertilizes two polar nuclei to form triploid endo ...
... pollen grain on stigma grows pollen tube from tube nucleus generative nucleus divides to produce 2 sperm cells pollen tube extends towards embryo sac inside female double fertilization; one sperm fertilizes egg nucleus to form diploid zygote; other fertilizes two polar nuclei to form triploid endo ...
Plants & Photosynthesis - Dr. Annette M. Parrott
... Figure 29.11xa Life cycle of a fern: mature fern (diploid sporophyte) ...
... Figure 29.11xa Life cycle of a fern: mature fern (diploid sporophyte) ...
Plant Life Cycles - Riverdale Middle School
... Pg. 89 • Plants have complex life cycles that include two different stages, the sporophyte stage and the ...
... Pg. 89 • Plants have complex life cycles that include two different stages, the sporophyte stage and the ...
How Plants Colonized onto Land
... Fertilization occurs when the sperm nuclei is injected into the egg through the pollen tube. More than one egg may be fertilized but only one develops into the zygote. ...
... Fertilization occurs when the sperm nuclei is injected into the egg through the pollen tube. More than one egg may be fertilized but only one develops into the zygote. ...
Contraceptives
... neck of the womb, called the Cervix. Diaphragms are used with contraceptive creams. A woman has to be measured for a Diaphragm. This is usually done by a Doctor or Nurse. Diaphragms are inserted before sex and taken out afterwards. A Diaphragm should be left in place for at least six hours after use ...
... neck of the womb, called the Cervix. Diaphragms are used with contraceptive creams. A woman has to be measured for a Diaphragm. This is usually done by a Doctor or Nurse. Diaphragms are inserted before sex and taken out afterwards. A Diaphragm should be left in place for at least six hours after use ...
PowerPoint Lecture 3
... pollen tube elongation is arrested, and the pollen grain dies •Sporophytic Self Incompatibility – blocks fertilization between genetically similar gametes. Probably due to exine (outer shell) of pollen grain. Occurs when one of the two alleles at the (S) Self Incompatibility locus match. (This promo ...
... pollen tube elongation is arrested, and the pollen grain dies •Sporophytic Self Incompatibility – blocks fertilization between genetically similar gametes. Probably due to exine (outer shell) of pollen grain. Occurs when one of the two alleles at the (S) Self Incompatibility locus match. (This promo ...
Name - Tacoma Community College
... many of the stages are very small and happen inside cones. The scales of the cones are modified leaves. On the surface of each leaf are sporangia. A. The Pine Lifecycle Step 1. Spores are made via meiosis within tiny male cones and tiny female cones. The spores do not go anywhere. Step 2. : In the m ...
... many of the stages are very small and happen inside cones. The scales of the cones are modified leaves. On the surface of each leaf are sporangia. A. The Pine Lifecycle Step 1. Spores are made via meiosis within tiny male cones and tiny female cones. The spores do not go anywhere. Step 2. : In the m ...
Overview of Plant Development Focus Primarily on Green Plants
... pollen tube elongation is arrested, and the pollen grain dies •Sporophytic Self Incompatibility – blocks fertilization between genetically similar gametes. Probably due to exine (outer shell) of pollen grain. Occurs when one of the two alleles at the (S) Self Incompatibility locus match. (This promo ...
... pollen tube elongation is arrested, and the pollen grain dies •Sporophytic Self Incompatibility – blocks fertilization between genetically similar gametes. Probably due to exine (outer shell) of pollen grain. Occurs when one of the two alleles at the (S) Self Incompatibility locus match. (This promo ...
Name - Tacoma Community College
... stages are very small and happen inside cones. The scales of the cones are modified leaves. On the surface of each leaf are sporangia. A. The Pine Lifecycle Step 1. Spores are made via meiosis within tiny male cones and tiny female cones. The spores do not go anywhere. Step 2. : In the male cones, t ...
... stages are very small and happen inside cones. The scales of the cones are modified leaves. On the surface of each leaf are sporangia. A. The Pine Lifecycle Step 1. Spores are made via meiosis within tiny male cones and tiny female cones. The spores do not go anywhere. Step 2. : In the male cones, t ...
Plant Reproduction - Doral Academy Preparatory
... The gametophytes produce both sperm and egg cells, and will fertilize itself, or others. Once the fertilization occurs, the adult fern will begin growing. ...
... The gametophytes produce both sperm and egg cells, and will fertilize itself, or others. Once the fertilization occurs, the adult fern will begin growing. ...
Female
... It takes several seasons for the seed cone to mature, but an immature cone can spread apart to allow pollen to enter. When the pollen enters it sticks to the pollen drops which is a sticky fluid that will evaporate to pull the pollen to the micropyle. After Pollination, the scales close-up to protec ...
... It takes several seasons for the seed cone to mature, but an immature cone can spread apart to allow pollen to enter. When the pollen enters it sticks to the pollen drops which is a sticky fluid that will evaporate to pull the pollen to the micropyle. After Pollination, the scales close-up to protec ...
Fertilisation
Fertilisation (also known as conception, fecundation and syngamy) is the fusion of gametes to initiate the development of a new individual organism. In animals, the process involves the fusion of an ovum with a sperm, which first creates a zygote and then leads to the development of an embryo. Depending on the animal species, the process can occur within the body of the female in internal fertilisation, or outside (external fertilisation). The cycle of fertilisation and development of new individuals is called sexual reproduction.