Transportation In Plants Flashcards
Why do plants growing in water-logged soil may not take up enough nitrates
Water logged soils are low in oxygen which means anaerobic respiration takes place
Eve sets up 3 experiments using dialysis tubing. She wants to do each of her 3 experiments at exactly 30 degrees Celsius. Describe how she could emsure temp of solutions in each experiment are kept at exactly 30 degrees Celsius
Place beakers in (electric/thermostatically-controlled) water bath
Describe how you can test samples for the prescence of glucose
Add benedicts solution
Look for red-brown precipitate
State function of stomata in plants
Controls water lost by transpiration
Explain why nitrate ions are essential for plant growth and survival
Plants use nitrates as a supply of nitrogen which is needed to make amino acids/proteins for healthy growth
Explain the roles of cell membrane and mitochondria in transporting nitrate ions in the root hair cells
Cell membrane transports nitrate ions into cell by active transport using carrier proyeins against a conc gradient
Mitochondria provides ATP/energy from cellular respiration for active transport
Suggest how water is being lost from thecut stsm when all leaves have been treated with petroleum jelly
Through evaporation from the upper side of the leaf
Type of cell that makes up cambium
Meristemic
How would flooding affects soil water potential
Lowers it
Student is studying effects of various light intensities upon the rate of transpiration on the plant. She wishes to use potometer abd use measurements of water uptake, to estimate rates of transpiration across 5 UV lamp intensities. Describe a method she can use to collect her data(6m)
1)Cut leafy shoots from the plants and remove the ends underwater
2)lower potometer into a sink of water to fill it and lose air bubbles
3)place shoot into tube with a bung/ petroleum jelly for a tight seal
4)
