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Unit 4 part 1

Unit 4 Leaves, structure and function

QuestionAnswer
a waxy covering on the upper surface of most leaves that protects from injury and water loss cuticle
an opening between two guard cells stoma
multiple openings (the plural for stoma) stomata
a pair of sausage/oval shaped cells on lower surface of most leaves that control formation of stomata guard cells
the process by which water passes out of the stomata of a leaf and into the environment transpiration
process by which chlorophyll containing cells (chloroplasts) trap and use energy from the sun to combine carbon dioxide and water into glucose for food, releasing oxygen as a waste product photosynthesis
food produced through photosynthesis, stored in the plant cells until needed glucose
tightly packed cells under the upper epidermis that contains lots of chloroplasts for photosyhnthesis palisade cells
loose area of mesophyll providing room for water, oxygen and carbon dioxide to travel within the leaf spongy layer
What are the ingredients for photosynthesis? energy from sunlight, water from roots, carbon dioxide from air (and chloroplasts in leaf cells)
What is formed during photosynthesis? glucose and oxygen
What comes in stomata? carbon dioxide
What goes out stomata? water and oxygen
How does a stoma open? If the leaf has too much water, water will enter the guard cells causing the to swell and buckle. The opening formed is the stoma.
How does a stoma close? As excess water is released out the stoma, the guard cells start to lose water and unswell. The gradually closes the stoma.
veins that carry water through a plant xylem
veins that carry glucose (food) through a plant phloem
An indicator used to detect the presence of carbon dioxide Bromthymol blue (BTB)
What color is bromthymol blue without carbon dioxide? blue
What color is bromthymol blue with carbon dioxide? yellow-green
a molecule that absorbs some colors of light and reflects others pigment
the common pigment in plants chlorophyll
what colors of light does chlorophyll absorb mostly red and blue, since green is reflected
Created by: jenhaugen01
 

 



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