CH23: Cells and tissues Flashcards
What is a simple tissue? Provide examples.
Composed of a single type of cell.
- ex. Parenchyma, collenchyma, and sclerenchyma
What is a complex tissue? Provide examples.
Composed of two or more cell types.
- ex. xylem, phloem, epidermis, and periderm
Secondary xylem is known as ___.
Wood
Secondary phloem is known as ___.
Inner bark or bast
What is the role of plasmodesmata in plants?
Microscopic cell wall channels allowing the trafficking of molecules between cells.
Celery stems are supported by what tissue type?
The “strings” on the outer surface, or petioles, are collenchyma.
What does primary growth produce? What does secondary growth produce?
Primary growth produces verticality.
Secondary growth produces horizontal growth or width.
What is required for a plant to develop woody tissue?
What are sources of phloem loading?
What tissue produces wood? Bark?
Which tissues prevent water loss from internal plant tissues?
What are the characteristics of collenchyma?
What are the characteristics of sclerenchyma?
What are the characteristics of epidermis?
What is the pirpose of abscission of leaves, stems, fruits, or flowers?
