1. Its first plate occupies 30 % of the width of the hypotheca . 2. The hypotheca has four large plates that constitute the majority of the cell. 3. Qui potiores in pignore vel hypotheca habeantur " was published in 1755. 4. The cell then synthesizes a new hypotheca . 5. One half, the hypotheca , is slightly smaller than the other half, the epitheca. 6. The smaller theca is usually thought of as " lower, " and is thus called the hypotheca . 7. The body is laterally compressed with a small, cap-like epitheca and a much larger hypotheca . 8. As the diatom prepares to separate it undergoes several processes in order to start the production of either a new hypotheca or new epitheca. 9. The anterior end has a crown-like platform, which is the smaller epitheca; while the posterior is simply rounded constituting a larger hypotheca . 10. This is used by each daughter cell as the larger frustule ( or epitheca ) into which a second, small frustule ( or hypotheca ) is constructed.
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