Fichas
Biology 3.1.3 Structure of xylem and phloem tissue
Fichas del conjunto (23)
- 1What are the three parts of the xylem tissue?Xylem vessel
Fibres
Xylem parenchyma - 2What is the xylem vessel?Columns of fused, hollow, dead cells
- 3What do xylem vessels transport?Water and mineral ions up the plant
- 4What are the fibres made of in the xylem tissue?Long dead cells with thick cell walls
- 5What do the fibres do?Provide support
- 6What is the xylem parenchyma?Living cells that form packing tissue and stores food
- 7Why has the xylem parenchyma adapted to have a bitter taste?To protect against insects tryong to eat it
- 8Why does the xylem vessels have an empty lumen?So that nothing can impead the flow of water and mineral ions
- 9What are the two funtions of lignin?-Prevents the xylem vessel from collapsing inwards
-Lignin allows for adhesionof water molecules - 10What do pits allow for?They allow for water to flow between xylem and plant
- 11What does phloem transport?Assimilates
- 12What are the two parts of phloem tissue?Sieve tube elements
Companion cells - 13What does parenchyma do?Fills up spaces in the cells
- 14What is the function of fibres in the phloem?Support
- 15What part of the phloem is a column where the assimilates go?Sieve tube
- 16What is the function of the companion cell?To carry out metabolic reactions for transport
- 17One of either the companion cell or sieve tube contain more of specific organelles. Which part has more of what organelles?The companion cell contains more mitochondria and rough endoplasmic reticulum to carry out metabolic reactions for transport, such as aerobic respiration
- 18Are the sieve tube walls lignified?NO
- 19How are the companion cell ad sieve tube connected?Plasmodesmata
- 20How is the companion cell adapted to increase transport?The cell surface membrane infolds to increase surface area for more respiration
- 21Does phloem contain pits?Nope
- 22In what direction does phloem transport assimilates around the plant?Up or down (from source to sink)
- 23What is cambium?A layer of meristem cells capable of making xylem and phloem
Información
- Descripción
- A level (3.1.3 Transport in plants) Biology Fichas sobre Biology 3.1.3 Structure of xylem and phloem tissue, creado por Sam Gunnell el 04/03/2019.
- Creado por
- Sam Gunnell
- Visitas
- 585
- Valoración