In metaphase I of meiosis I, the pairs of homologous chromosomes, also known as bivalents or tetrads, line up in a random order along the metaphase plate. The random orientation is another way for cells to introduce genetic variation.
True, it comes from chromoplasts<span>
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In the diagram we see a cell plant, with a few structures numbered:
0. Vacuole
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1. Chloroplast
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2. Nucleus
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3. Cell wall
The answer options correspond with the functions of these structures:
0. Vacuole- Has secretory, excretory, and storage roles (B)
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1. Chloroplast - It makes the photosynthesis (D)
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2. Nucleus - Serves as the control center of the cell and contains the genetic information (A)
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3. Cell wall ,- ,Provides structural support to the cell (C)
A prothallium, or prothallus<span> is usually the </span>gametophyte<span> stage in the life of a </span>fern<span> or other pteridophyte. Occasionally the term is also used to describe the young </span>gametophyte<span> of a liverwort or peat moss as well.</span>