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Definition
Fertilization occurs in flowering plants when the male pollen or gametophyte, assisted by various agents, pollinates the ovum, a process that can occur within one flower or between the flowers of the same or different plants
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Definition
| is the process by which pollen from a plant's anther is transferred to another plant's stigma. This transferral fertilises the plant and the plant then goes on to reproduce (for example, produce seeds). |
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| Describe double fertilization? |
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Definition
- refers to when flowering plants contain two sperm cells that each fertilize a different cell.
-involves the fusion of two sperm cell nuclei of the male gametophyte with two cell nuclei of female gametophyte. One sperm fuses with the haploid egg cell to form the zygote; the other sperm unites with the diploid central cell to form a triploid cell that will develop to an endosperm. |
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Definition
-is the tissue produced inside the seeds of most flowering plants around the time of fertilization. It surrounds the embryo and provides nutrition in the form ofstarch, though it can also contain oils and protein. This can make endosperm a source of nutrition in human diet.
-tissue that surrounds and nourishes the embryo in the angiosperm seed. The initiation of endosperm is a definitive characteristic of angiosperms and requires the fusion of at least one nucleus in the embryo sac with a sperm nucleus from the pollen grain. |
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| Describe the differenttypes of pollination |
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Definition
CROSS POLLINATION is the transfer of pollen grains from the anther of a flower to the stigma of a flower of a different plant of the same species.
& SELF POLLINATION s the transfer of pollen grains from the anther to the stigma of the same flower or of another flower of the same plant.
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| What is a fruit and what is its function |
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Definition
-The primary function is to a plant is to scatter seeds.
- is a part of a flowering plant that derives from specific tissues of the flower, one or more ovaries, and in some cases accessory tissues. |
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Term
| Define the parts ofthe fruit: endocarp |
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Definition
The innermost layer of the pericarp that surrounds a seed in a fruit.
-the hard inner layer of the pericarp of many fruits, such as the pit or stone of a cherry, peach, or olive. |
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Definition
The middle layer of the pericarp of a fruit, between the endocarp and the exocarp.
-The middle, usually fleshy layer of a fruit wall. |
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Definition
The outer layer of the pericarp of a fruit.
-outermost layer of the pericarp of fruits: forms the skin |
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Term
| Know specific differences between Mitosis and Meiosis.... |
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Definition
Mitosis: type of nuclear division resulting in 2 genetically identical daughter cells: Division used in growth
Meiosis: specialized type of nuclear division which results in 4 genetically different daughter cells that have 1/2 the # of chromosomes as the mother cell |
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Term
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Definition
| type of nuclear division resulting in 2 genetically identical daughter cells: Division used in growth |
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Term
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Definition
| specialized type of nuclear division which results in 4 genetically different daughter cells that have 1/2 the # of chromosomes as the mother cell |
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| Know each stage of Mitosis including what happens in Interphase: |
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Definition
I-P-M-A-T
Iterphase
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis |
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Term
Know each stage of Mitosis including what happens in...
phase: interphase |
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Definition
| cell spends majority of the time in this stage synthesizes molecules, DNA replication |
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Term
| Know each stage of Mitosisincluding what happensin phase: prophase |
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Definition
| chromosomes condensed and become visible nuclear membrane disappears |
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| Know each stage of Mitosisincluding what happensin phase metaphase: |
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Definition
| chromosomes align in the equational plane of the cell. spindle fibers appear |
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Term
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Definition
The point on a chromosome by which it is attached to a spindle fiber during cell division.
-sticky part of chromosomes |
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Term
| Know each stage of Mitosis including what happens in phase Anaphase: |
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Definition
| chromosomes seperate and pull apart to opposite end of poles b spindle fibers |
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| Know each stage of Mitosis including what happens in phase Telophase: |
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Definition
| chromosomes organise themselves and the nuclear envelope develops |
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Term
| Know each stage of Mitosis including what happens in phase cytokinesis: |
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Definition
| division of the sytopeasm resulting in 2 genetically identical daughter cells |
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Term
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Definition
| long thin strands of DNA complesed w/ protein |
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Term
| where does crossing over occur? Meiosis |
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Definition
| metaphase- induces genetic vataibility |
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Term
| In anaphase in Meiosis chromosomes>>> |
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Definition
| go to opposite ends of pole |
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Term
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Definition
| # of chromosomes per body cells |
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Term
| Meiosis: 2 nuclear divisions: Meiosis 1 meiosis 2 |
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Definition
| end up with 4 genetically different daughter cells 1/2 of chromosomes |
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| stages of Meiosis 2 is like |
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Definition
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| stages of meiosis 2 : cytokinesis |
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Definition
| end with 4 genetically different daughter cells |
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Term
| Define allele and know the types... |
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Definition
alternae forms of genes
Dominate & Recessive |
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Term
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Definition
| trait thats always expressed |
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Term
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Definition
| trait suppressed by dominate alleles |
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Term
Know difference between homozygous and heterozygous genes...
homozygous... |
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Definition
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Term
Know difference between homozygous and heterozygous genes
heterozygous... |
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Definition
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Definition
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Term
what occur in pairs in diploid organisms
one set given by each parents |
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Definition
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| what determines hereditary characteristics of an organisms |
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Definition
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| what occur in linear sequence on chromosomes |
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Definition
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| what puts DNA sequence together |
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Definition
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Term
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Definition
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Term
| when can you see a recessive trait? |
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Definition
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| biological engineering... |
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Definition
| it is the only type of engineering applied tto living |
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Definition
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