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Stem Cells and Meristems
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- 1what are stem cells?unspecialised/undifferentiated cells that can renew to produce new cells
- 2where do stem cells come from?1. embryos (embryonic stem cells)
2. adult tissue (adult stem cells) - 3why do stem cells raise moral issues and concerns?main criticism=requires the destruction of a fertilised human egg. some argue this is murder
- 4where does growth occur in animals?all over the body
- 5where does growth occur in plants?the meristems
- 6what is a plants meristem?group of undifferentiated plant cells that can divide repeatedly to produce cells that can become any type of plant cell
- 7the apical meristems are found..at the root and shoot tips
- 8the lateral meristems are found...in the stem/branch
- 9what is growth?an irreversible increase in the dry mass of an organism
- 10what is differentiation?the process which an unspecialised cell changes to be able to perform a function as part of a permanent tissue
- 11what is mitosis?cell division within a plant. occurs at the meristems
Información
- Descripción
- info about mitosis, stem cells, meristems, growth and repair (sub topic 2.2)
- Creado por
- hollyemmakerr
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