Plant Evolution - Cloudfront.net
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Gymnosperms
... Generally called conifers or cone bearing Largest division with greatest number of species Most abundant trees in northern hemisphere Oldest living plants Have short shoots, long shoots and two types of leaves Pine needle, occurs in clusters called fascicles Tree completely replaces needles ~ 5 year ...
... Generally called conifers or cone bearing Largest division with greatest number of species Most abundant trees in northern hemisphere Oldest living plants Have short shoots, long shoots and two types of leaves Pine needle, occurs in clusters called fascicles Tree completely replaces needles ~ 5 year ...
Grade 11 University Biology
... Upon fertilization, the ovule develops the seed structures (i.e., seed coat and endosperm) and the zygote develops into the embryo. Female cones remain on the parent plant until the seeds mature. If the seed germinates, it grows into a sporophyte and the cycle is repeated. Alternation of generations ...
... Upon fertilization, the ovule develops the seed structures (i.e., seed coat and endosperm) and the zygote develops into the embryo. Female cones remain on the parent plant until the seeds mature. If the seed germinates, it grows into a sporophyte and the cycle is repeated. Alternation of generations ...
Back to Reality: Reproduction Quiz Name: score : /40 1. The ovaries
... 1. The ovaries of the female reproductive system produce hormones and _______________. A) cilia B) estrogens C) sperm D) eggs 2. An embryo develops inside the ___________________. A) vagina B) uterus C) cervix D) ovary 3. The vagina is the passageway through which a baby moves during _______________ ...
... 1. The ovaries of the female reproductive system produce hormones and _______________. A) cilia B) estrogens C) sperm D) eggs 2. An embryo develops inside the ___________________. A) vagina B) uterus C) cervix D) ovary 3. The vagina is the passageway through which a baby moves during _______________ ...
Sexual Reproduction of the Flowering Plant
... Spore - a reproductive cell capable of developing into a new individual without fusion with another reproductive cell Spores are different than seeds, they do not contain plant embryos or food stores A structure called sporangia produce the very tiny spores ...
... Spore - a reproductive cell capable of developing into a new individual without fusion with another reproductive cell Spores are different than seeds, they do not contain plant embryos or food stores A structure called sporangia produce the very tiny spores ...
Advantages of Sexual Reproduction
... • they require a huge amount of energy to make! • Still have ________________ of sperm released to guarantee fertilization takes place ...
... • they require a huge amount of energy to make! • Still have ________________ of sperm released to guarantee fertilization takes place ...
Embryo develops into the sporophyte Major groups of plants
... broad leaves, though… (Why not?) May also have toxins to prevent being eaten ...
... broad leaves, though… (Why not?) May also have toxins to prevent being eaten ...
How a Flower is Pollinated
... the male and female parts of the plant • Some plants use wind to blow the pollen and they ...
... the male and female parts of the plant • Some plants use wind to blow the pollen and they ...
22.3_Seed_Plants
... plant- the sporophyte embryo Embryo begins to grow under right conditions Uses nutrients stored in the seed until it can carry out photosynthesis on its own Seed coat Surrounds ...
... plant- the sporophyte embryo Embryo begins to grow under right conditions Uses nutrients stored in the seed until it can carry out photosynthesis on its own Seed coat Surrounds ...
Mendel`s Laws of Heredity
... divides by meiosis, one functional egg cell is made, with 3 tiny polar bodies used to discard "extra" sets of chromosomes. ...
... divides by meiosis, one functional egg cell is made, with 3 tiny polar bodies used to discard "extra" sets of chromosomes. ...
PLANT DIVISIONS
... • Flower will develop into fruit that is used for seed dispersal via wind, water, or animal. • Pollination can be by wind, bird, bat, insect. • Most advanced (recent) • Gametophyte is reduced and within the flower. • Most diverse: grasses to trees ...
... • Flower will develop into fruit that is used for seed dispersal via wind, water, or animal. • Pollination can be by wind, bird, bat, insect. • Most advanced (recent) • Gametophyte is reduced and within the flower. • Most diverse: grasses to trees ...
Ch 24 Reproduction in Plants
... c. Day-neutral plants – other factors control flowering (temp, moisture…most plants 24.3. The Life Cycle of a Flowering Plant A. The Life Cycle of an Anthophyte – In anthophytes, the gametophyte generations is contained within the sporophyte, similar to conifers. Sporophyte stage is dominant (pg. 66 ...
... c. Day-neutral plants – other factors control flowering (temp, moisture…most plants 24.3. The Life Cycle of a Flowering Plant A. The Life Cycle of an Anthophyte – In anthophytes, the gametophyte generations is contained within the sporophyte, similar to conifers. Sporophyte stage is dominant (pg. 66 ...
1. Scientists classify plants according to how they and . 2. Plants with
... 1. A pollen cell is transferred to the stigma of a flower during pollination. 2. The pollen cell enters the stigma, travels down the style into the ovary where it combines with the egg. (fertilization) 3. The fertilized egg becomes a seed, which germinates and eventually grows into a new flower or p ...
... 1. A pollen cell is transferred to the stigma of a flower during pollination. 2. The pollen cell enters the stigma, travels down the style into the ovary where it combines with the egg. (fertilization) 3. The fertilized egg becomes a seed, which germinates and eventually grows into a new flower or p ...
Plant reproduction
... • Angiosperms are flowering plants. Most of the plants we see are angiosperms. • Unlike the other plant groups, angiosperms are often fertilized with the aid of animals. • Some angiosperms have wind-dispersed pollen. Flowers on these plants are usually small and inconspicuous. • Other angiosperms ar ...
... • Angiosperms are flowering plants. Most of the plants we see are angiosperms. • Unlike the other plant groups, angiosperms are often fertilized with the aid of animals. • Some angiosperms have wind-dispersed pollen. Flowers on these plants are usually small and inconspicuous. • Other angiosperms ar ...
Unit 12: Plant Kingdom
... 5. The male reproductive organ of the plant is the ___________________. 6. The female reproductive organ of the plant is the ___________________. 7. The sepals support and _________________ the plant. 8. The threadlike part of the stamen is called the ______________________. ...
... 5. The male reproductive organ of the plant is the ___________________. 6. The female reproductive organ of the plant is the ___________________. 7. The sepals support and _________________ the plant. 8. The threadlike part of the stamen is called the ______________________. ...
Endocrine System
... • Endocrine glands release hormones directly into the blood because they are ductless • Negative feedback system endocrine system gives itself messages to control the production and release of hormones ...
... • Endocrine glands release hormones directly into the blood because they are ductless • Negative feedback system endocrine system gives itself messages to control the production and release of hormones ...
NOTES: Plant Reproduction and Development
... 1) a pollen tube grows from the pollen grain, down the carpel, into the embryo sac; 2) sperm are discharged resulting in fertilization of the eggs; 3) the zygote develops into an embryo; 4) as the embryo grows, the ovule surrounding it develops into a 5) while seed formation is taking place, the ent ...
... 1) a pollen tube grows from the pollen grain, down the carpel, into the embryo sac; 2) sperm are discharged resulting in fertilization of the eggs; 3) the zygote develops into an embryo; 4) as the embryo grows, the ovule surrounding it develops into a 5) while seed formation is taking place, the ent ...
Plant Reproduction – Sexual Reproduction
... Cross-pollination is when pollen from one plant pollinates a flower on a different plant. Once the pollen lands on the stigma, it grows a thin pollen tube down the style to the ovary. The cell within the grain of pollen divides to form two sperm nuclei. These travel down the pollen tube to the embr ...
... Cross-pollination is when pollen from one plant pollinates a flower on a different plant. Once the pollen lands on the stigma, it grows a thin pollen tube down the style to the ovary. The cell within the grain of pollen divides to form two sperm nuclei. These travel down the pollen tube to the embr ...
How a Flower is Pollinated?
... to blow the pollen and they have small leaves Plants which use insects to transfer the pollen usually ...
... to blow the pollen and they have small leaves Plants which use insects to transfer the pollen usually ...
Spermatogenesis (11
... Fertilization is the union of egg and sperm to produce a zygote Fertilization occurs in the fallopian tubes One sperm will penetrate the egg. The sperm initially bind to receptors on the outside of the egg Enzymes in the acrosome will degrade the zona pellucida Plasma membranes from the sperm ...
... Fertilization is the union of egg and sperm to produce a zygote Fertilization occurs in the fallopian tubes One sperm will penetrate the egg. The sperm initially bind to receptors on the outside of the egg Enzymes in the acrosome will degrade the zona pellucida Plasma membranes from the sperm ...
Diversity
... The major groups are shown. After sponges (Parazoa) diverge, leaving all other animals (Eumetazoa), differences in symmetry reveal two groups (Radiata, Bilateria). Embryonic differences within the Bilateria are diagnostic for the Protostomia and Deuterostomia. The subgroups of protostomes are the Ec ...
... The major groups are shown. After sponges (Parazoa) diverge, leaving all other animals (Eumetazoa), differences in symmetry reveal two groups (Radiata, Bilateria). Embryonic differences within the Bilateria are diagnostic for the Protostomia and Deuterostomia. The subgroups of protostomes are the Ec ...
Diversity of Plants - Dublin City University
... Spore bearing leaves (sporophylls) produce Spore-producing structures (sporangia) Spores produced by meiosis Sometimes two different sizes of spores, microspores and megaspores giving male and female prothalli, are produced from microsporangia and megasporangia. This may explain how seeds originated ...
... Spore bearing leaves (sporophylls) produce Spore-producing structures (sporangia) Spores produced by meiosis Sometimes two different sizes of spores, microspores and megaspores giving male and female prothalli, are produced from microsporangia and megasporangia. This may explain how seeds originated ...
Chapter 32-Plant Reproduction
... (1) Microspore Mother Cells (diploid cells found in the four pollen sacs) • Undergo meiosis to yield four haploid microspores, of which develop into mature male gametophytes or microgametophytes (two-celled pollen grain) (2) Tube Cell and Generative Cell (TWO cells of pollen grain) • When a pollen g ...
... (1) Microspore Mother Cells (diploid cells found in the four pollen sacs) • Undergo meiosis to yield four haploid microspores, of which develop into mature male gametophytes or microgametophytes (two-celled pollen grain) (2) Tube Cell and Generative Cell (TWO cells of pollen grain) • When a pollen g ...
Year 9 Reproduction – Vocabulary list
... After an embryo has grown all its organs it is called a foetus. This is usually after about 10 weeks. ...
... After an embryo has grown all its organs it is called a foetus. This is usually after about 10 weeks. ...
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.