Biology

Biology, 01.10.2019 11:30, graceaowen

If x stands for 'xylem' and the p stands for 'phloem' in the flax stem, then the flax plant is a

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Biology, 22.06.2019 10:00, AM28

Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?

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Biology, 03.07.2019 00:00, nostalgiafaith

30 points. i need with this quiz questions. 1. which statement is true about cell differentiation? a.) it produces identical cells. b.) it happens during cell division. c.) it causes cells to change and specialize. d.) it happens in all cells. 2. which order of events is correct? a.) zygote -> stem cells -> cell differentiation. b.) mitosis -> cell differentiation -> stem cells. c.) stem cells -> zygote -> cell differentiation. d.) zygote -> cell differentiation -> mitosis. 3. as a tree ages, it has to keep making xylem and phloem cells to carry food and water. which statement explains how this occurs? a.) cell division is not necessary for a plant to keep making more xylem and phloem cells. b.) the existing xylem and phloem divide to make more xylem and phloem. c.) xylem and phloem from one part of the plant are transferred to another part. d.) meristim cells divide and some of the new cells differentiate into xylem and phloem. 4. which process is most critical for different types of tree cells to develop. a.) dna replication. b.) cell differentiation. c.) sexual reproduction. d.) mitosis. 5. when the seeds of a tree first start to grow, what would happen if the cells did not differentiate? a.) other cells would differentiate. b.) all seeds would be identical. c.) the seed could form roots, but not leaves. d.) the dna would make new cells.

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History, 25.09.2019 11:30, KATVEN

Drag and drop the events to arrange them to show how the development of agriculture led to a change in clothing, put the first event at the top flax and cotton fibers make lighter materials to wear. humans begin farming plants for food. people learn to weave fibers from flax and cotton. farmers domesticate cotton and flax.

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If x stands for 'xylem' and the p stands for 'phloem' in the flax stem, then the flax plant is a...

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