photosynthesis Flashcards
how are photosynthetic organisms producers of biomass?
they use light energy to create carbohydrates that can be passed down to other organisms down the food chain
what is the word equation for photosynthesis?
carbon dioxide + water - oxygen + glucose
what is the balanced equation for photosynthesis?
6CO2 + 6H20 - 6O2 - C6H12O6
what is the brief summary of what happens during photosynthesis?
- light energy is absorbed by the chlorophyll
- absorbed light energy is used to convert carbon dioxide from the air and water from the soil into glucose
- oxygen is released as a by-product
what is starch?
starch is made from glucose and is used for building cell walls, it is stored in seeds and other plant parts for a food source
why is photosynthesis an endothermic reaction?
it absorbs/takes in light energy
the function of the upper epidermis
allows light to pass through and reach cells underneath
the function of the vacuole
regulates carbon dioxide
the function of the chloroplasts
contains chlorophyll which converts solar energy to chemical energy
the function of the stoma
takes in carbon dioxide and releases oxygen
the function of the lower epidermis
allows carbon dioxide to enter the leaf and oxygen and excess water to leave the leaf
the function of the spongy mesophyll
allows carbon dioxide to diffuse into spongy mesophyll and oxygen out of them
the function of the cuticle
waxy later to provide protection for the leaf and prevents evaporation from leaf surface
the function of the guard cell
allows plants to regulate water and solutes by opening and closing the stoma
what are some adaptations plants have for photosynthesis?
- large surface area - more light
- leaf arrangement - and increased absorption of sunlight
- cuticle and upper epidermis - prevents loss of water
- numerous stomata - allows more carbon dioxide to diffuse for photosynthesis
