1. Good Morning! Wednesday, 12/9 As you come in, take out: 1.Biodiversity binder 2.Data table (for comparing soil types lab)

2.  Staple your data table to your lab set up (salmon sheet).  Collect your data & make observations.  Don’t forget to water your plants!!  Adding water is a control variable you should be considering. Make sure you add the same amount of water to each of your plants.

3.  How water & minerals moves from the ground to the top of a plant  Plants loose water out of their leaves  Which pulls water up from the stem  Which pulls water up from the roots  Which absorbs water from the ground TRANSPIRATION (label)

4. TRANSPIRATION  Evaporation of water in the leaves (through stomates) generates the ‘sucking force’ that pulls adjacent water molecules up the leaf surface

5.  Like a long chain, water molecules pull each other up the column.  The column goes from roots  leaves.  What’s amazing is that the water moves up by using the sun’s evaporative energy…  Plants control transpiration by opening/closing stomata TRANSPIRATION

6. LEAF/LEAVES (dermal tissue)  Is transparent – so that sun light can go through.  Waxy cuticle protects against drying out  Lower epidermis: stomata with guard cells – for gas exchange (CO 2, H 2 O in; O 2 out)

7.  VEINS  vascular tissue of leaves.  Veins are composed of: 1. xylem (water transport) 2. phloem (food transport) and 3. bundle sheaths - cells surrounding the xylem & phloem for strength & support LEAF/LEAVES (vascular tissue)

8. MAKE YOUR OWN LEAF

9. TRANSPIRATION LAB  Take a look at your celery and flowers!  Make your final observations  Try cutting the end off the celery….  What do you see?  For your CONCLUSION Use: 1. your observations 2. your transpiration notes and 3. Your plant and leaf anatomy notes to help you write a thorough conclusion  This is homework if you do not get it finished in class