Plants and photosynthesis
- Created by: moomintroll67
- Created on: 07-05-18 12:22
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- Plants and photosynthesis
- plant cell
- all the things animal cells have
- cell wall- cellulose- supports cell
- permanent vacuole- cell sap-weak sugar and salts
- chloroplasts- photosynthesis- contains chlorophyll
- photosynthesis
- produces glucose using light
- carbon dioxide + water --> glucose + oxygen
- 6co2 + 6h20 --> c6h12o6 + 6o2
- glucose is used for:
- repspiration- transfer of energy
- making cellulose-support cell wall
- making amino acids - that turn into proteins
- stored as oils or fats
- stored as starch- starch is insoluble so better for storage than glucose
- limiting factors
- not enough light
- too little carbon dioxide
- the temperature has to be warm but not above 45 degrees centigrade
- produces glucose using light
- tissues and organs
- plant organs work together to make organ systems
- organs are made of tissues
- epidermal tissue- covers the whole plant
- lower epidermis contains stomata- which let co2 diffuse directly into the leaf
- palisade mesophyll tissue- part of leaf where most photosynthesis occurs
- spongy mesophyll tissue- part of leaf where gas exchange happens
- xylem and phloem- transport water, mineral ions and food around the plant
- xylem- transports water and mineral ions, water journey is called the transpiration stream
- phloem- transports food mainly glucose for immediate use and storage, process is called translocation
- meristem tissue- found at the growing tips of shoots and roots, adaptable so helps the plant grow
- epidermal tissue- covers the whole plant
- organs are made of tissues
- plant organs work together to make organ systems
- rate of photosynthesis
- inverse square law links light intensity and distance
- plant cell
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