Term
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Definition
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Term
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Definition
| Two different sperm involved in fertilization, one inseminates the polar nuclei (Endosperm is formed) and the other inseminates the fertile egg (Embryo is formed). |
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Term
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Definition
| The xylem is a water conducting element in the plant. |
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Term
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Definition
| The tracheid functions in both physical support and water transport. |
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Term
| What 5 things have made angiosperms so successful? |
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Definition
1. Diversity of growth forms(evolutionary plastic)
2. Diverse means of dispersing seeds via fruits.
3. Highly effective pollination mechanisms(very specific targeting)
4. Vessels deliver water faster allowing diverse leaf shapes.
5. Diversity of chemical weaponry. |
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Term
| What are the 5 distinguishing factors of angiosperms? |
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Definition
1. They are true flowers with stamens or carpels, or both.
2. They have closed carpels and fruits.
3. They have two integuments around the ovule, forming the seed coat.
4. Angiosperms have vessels in the xylem.
5. They have a double fertilization feature. |
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Term
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Definition
| Plant that has a 1 year lifespan. |
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Term
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Definition
| Plant with several growing seasons. |
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Term
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Definition
| Plant with 2 growing seasons. |
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Term
| What are the two growing seasons for a biennial? |
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Definition
1. Basal rosette in the first growing season.
2. The flowering stalk in the second growing season. |
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Term
| How does an annual come back the following year? |
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Definition
| The plant leaves seeds behind that grow. |
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Term
| What are the two different classes of angiosperms? |
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Definition
1. Monocots (Liliopsida)
2. Dicots (Magnoliopsida) |
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Term
| Distinguishing factors of monocots |
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Definition
1. Major leaf veins are parallel.
2. Flower parts in threes.
3. Roots are adventitious. |
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Term
| Distinguishing factors of dicots |
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Definition
1. Flower parts in multiples of 4 or 5.
2. Roots develop from radicle.
3. Secondary growth often present.
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Term
| Percentage of dicots in comparison to monocots |
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Definition
| Close to 80% of all flowers are dicots, while only 20% of flowers are monocots. |
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Term
| What are adventitious roots? |
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Definition
| Roots that arise from unusual places, aerial stems or from leaves. Often times they grow for structural support reasons, access to oxygen, and or vine attachments. |
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