IB DP Biology: HL復習筆記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復習筆記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...
IB DP Biology: HL復習筆記9.1.6 Skills: Experiments Investigating the Rate of Transpiration
Practical 7: Potometers & the Rate of Transpiration The?effect of environmental factors on the rate of transpiration?in plants can be measured using a piece of equipment called a?potometer Note...
IB DP Biology: HL復習筆記9.1.5 Skills: Drawing Xylem Vessels
Drawing Xylem Vessels The internal structure of plants can be examined by taking transverse sections of different parts of a plant, including the leaves, stem and roots Note that cross sections can...
IB DP Biology: HL復習筆記9.1.4 Adaptations of Xerophytes
Adaptations of Xerophytes Plants that live in conditions with a?plentiful supply of fresh water?have leaves with a?short diffusion distance through to the stomata?and a?large surface area?provided ...
IB DP Biology: HL復習筆記9.1.3 The Roots & Water Transport
Active Transport of Minerals in the Roots Within a plant,?mineral ions?are?dissolved in water?and transported in the?xylem?vessels Mineral ions needed by plants include nitrates, phosphates, and po...
IB DP Biology: HL復習筆記9.1.2 The Transpiration Stream
Water Transport Within The Xylem The transport of water occurs in xylem vessels, one of the?vascular tissues?found within plants The?cohesive?property of water, together with the structure of the x...
IB DP Biology: HL復習筆記9.1.1 Transpiration in Plants
Transpiration & Gas Exchange The majority of?photosynthesis?takes place in the?leaves?of plants Some plants are able to carry out photosynthesis in the cells of their stems During photosynthesi...
IB DP Biology: HL復習筆記8.3.6 Skills: Photosynthesis
Skills: Annotating Chloroplasts Electron micrographs may?differ?in shape and size depending on where the cross section of the organelle was taken Usually the following features should be notable an...
IB DP Biology: HL復習筆記8.3.5 Chloroplast
Chloroplast Structure & Function Structure Chloroplasts are the organelles in plant cells where?photosynthesis?occurs These organelles are roughly?2 - 10 μm?in diameter (they are larger than mi...
IB DP Biology: HL復習筆記8.3.4 Investigating Carbon Fixation in Photosynthesis
Investigating Carbon Fixation in Photosynthesis NOS: Developments in scientific research follow improvements in apparatus: sources of 14C and autoradiography enabled Calvin to elucidate the pathway...
IB DP Biology: HL復習筆記8.3.3 Light-independent Reactions
Location of the Light-independent Reactions The light-independent reactions of photosynthesis take place in the?stroma?of the chloroplasts The stroma is within the double membrane and is a thick pr...
