IB DP Biology: HL复习笔记9.4.1 Flowering
Flowering & Gene Expression The life cycle of a flowering plant involves The vegetative phase The part of the life cycle during which plant growth takes places A plant in the vegetative phase c...
IB DP Biology: HL复习笔记9.3.3 Micropropagation
Micropropagation of Plants The nature of plant growth means that plants can be grown by a process known as micropropagation Micropropagation is a form of tissue culture in which plant cells are cul...
IB DP Biology: HL复习笔记9.3.2 Plant Hormones
Plant Hormones & Shoot Growth Plant hormones are responsible for most communication within plants Plant hormones are not the same as hormones in animals but they are chemical messengers so the ...
IB DP Biology: HL复习笔记9.3.1 Plant Growth
Plant Growth Plant growth occurs in regions known as meristems The cells in these regions are known as meristem cells Meristem cells are undifferentiated; they actively divide by mitosis to produce...
IB DP Biology: HL复习笔记9.2.5 Skills: Measuring Phloem Transport Rates
Measuring Phloem Transport Rates Hemiptera (also known as true bugs) is an order of insects that have highly-adapted mouthparts for piercing and sucking Many hemipterans (such as aphids) use these ...
IB DP Biology: HL复习笔记9.2.4 Skills: Identifying Xylem & Phloem
Identifying Xylem & Phloem Xylem The functions of xylem tissue in a plant are: To transport dissolved minerals and water up the plant via vascular tissues Structural support Xylem tissue is fo...
IB DP Biology: HL复习笔记9.2.3 Hydrostatic Pressure Gradients
Hydrostatic Pressure Gradients Phloem sap containing sucrose and other organic solutes moves through the sieve tubes down a hydrostatic pressure gradient This is known as the pressure-flow hypothes...
IB DP Biology: HL复习笔记9.2.2 Sucrose Loading
Sucrose Loading Mechanism Organic compounds such as sucrose are transported from source to sink through the phloem sieve tubes Sucrose is a disaccharide formed from a molecule of glucose and a mole...
IB DP Biology: HL复习笔记9.2.1 Translocation in Plants
Translocation Translocation is the biological term used to describe the transport of organic solutes in the phloem tissue The liquid that is being transported within the phloem can be referred to a...
