9637997
Description
Flashcards by Kate FRANCINETH Bauleth, updated more than 1 year ago
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Created by Kate FRANCINETH Bauleth
over 7 years ago
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| Question | Answer |
| LIFE SCIENCE 4 | WELCOME TO CHAPTER 4 |
| PLANTS *FOOD PRODUCTION IN PLANTS | nutrition~process by which all living organisms take in food +use it for energy and growth plants~producers animals~consumers |
| *continuation | plants use simple inorganic substances to make complex organic foods plants leaves contain a green pigment(s) called chlorophyll -absorb +trap sunlight E PROCESS BY WHICH PLANTS MAKE FOOD =PHOTOSYNTHESIS |
| INTERNAL STRUCTURE OF LEAVES | THERES A DIAGRAM ON PAGE 36 CONSISTING OF: #stomata #lower epidermis #vascular bundle #spongy cell #chloroplast #palisade cell #upper epidermis #cuticle |
| FUNCTIONS OF LEAVES | #food production -photosynthesis #transpiration-gtting rid of excess water #respiration-exchange of gases #storage of food + water |
| PHOTOSYNTHESIS PHOTO-LIGHT SYNTHESIS-MAKING | process whereby green plants(chemical-chlorophyll) make their own food(glucose-carbohydrates) in the presence of sunlight using C02 from the air and H20 from soil |
| WORD EQAUTION | WATER + CARBON DIOXIDE -SUNLIGHT/CHLOROPHYLL=GLUCOSE (CARBOHYDRATES) + OXYGEN |
| CHEMICAL EQAUTION | 6H20 +6C02-SUNLIGHT/CHLOROPHYLL =C6H12O6+602 |
| ADAPTATION OF LEAVES FOR PHOTOSYNTHESIS | # green pigment (chloropyll +chloroplast) -absorb sunlight #large surface area -maximise amount of sunlight and C02 #thin cross-section-nearly all xells are exposed to sunlight #reduced distance to travelled by C02 +sunlight to cells #large number of stomata(mainly underneath) #maximise amount of C02 #dense network of veins -enables effeciant supply of water to cells |
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