Biology - Photosynthesis - (Part I)

Description

Exploring how plants make food - p 176 - 177 Looking at leaves - p 178 - 179 Exploring the movement of water and minerals in plants p 180- 181 Investigating the importance of minerals to plants p 182 - 183 Investigating photosynthesis p 184 - 185
Seth Bailey
Flashcards by Seth Bailey, updated more than 1 year ago
Seth Bailey
Created by Seth Bailey over 5 years ago
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Resource summary

Question Answer
What is photosynthesis a chemical process which takes place in every green plant
What does photosynthesis do? produces food in the form of glucose (a carbohydrate)
Where does photosynthesis happen in the plant all the green bits mainly the leaves
What word equation summarises photosynthesis
Name the four things needed for photosynthesis sunlight chlorophyll carbon dioxide water
What is Chlorophyll a green chemical found in the chloroplasts of plant cells.
What does carbon dioxide do in plants? diffuses into the leaves from the air
What is the purpose of water for plants? It absorbs soil by the plant roots and is carried up to the leaves
Chlorophyll absorbs s______ and uses its energy to convert c______ d______ and w_____ into g_____. sunlight carbon dioxide water glucose
Why are leaves on plants broad? the big surface area absorbs light
Where are most of the chloroplasts found in cells of leaves near the top where they can get most light
The underside of the leaves are covered in tiny holes, what are they called? stomata
What do the stomata on the underside of the leaves do? Allow carbon dioxide to diffuse into the leaf from the air and allow oxygen to diffuse out.
Leaves also contain a network of veins, what is their job? to deliver water to the leaf cells and take away glucose.
What are the long narrow cells packed with chloroplasts, mainly at the top of the cells called? palisade cells
What is transpiration? movement of water through a plant and its leaves
What is the name of the pipeline that transports water and minerals from the roots up the plant stem and into the leaves. xylem
The roots of the plant have a special cell which penetrate between the soil particles, they have a long surface area to absorb water, what are they called? root hair cells
Plants grow using the food they make for themselves in photosynthesis but to keep healthy they need something else which they find in the soil, what is it? minerals
What does phosphorus deficiency cause? poor root growth and discoloured leaves
What do fertilisers (or manure) do? release minerals quickly into the soil
How would you test a leaf for starch boil the leaf to destroy the cell wall and break down cellulose fibres. Put leaf in test tube filled with me
Hydrogen Carbonate is an orange solution. In more acidic conditions it turns..(what colour) yellow
Hydrogen Carbonate is an orange solution. In less acidic conditions it turns..(what colour) red
Carbon dioxide dissolves in water to form what? an acidic solution
Which raw material are used in photosynthesis? water, light and chlorophyll
What did Jan Baptist van Helmont discover and then Joseph Prisley that a rat could not live in a sealed jar! if you put a plant with the rat it would live until the plant couldn't photosynthesis because there was no light
name 5 ways plants use glucose turn it to starch and store store as fats and oils makes cellulose for plant cell walls use for energy protiens for growth and repair
What type of reaction is photosynthesis endothermic reaction
Explain photosynthesis in 3 stages carbon dioxide and water go into the leaf light energy is absorbed by chlorophyl glucose is made with light energy + Co2 + water
What is a waste product of photosynthesis? oxygen
Name 3 uses of glucose from photosynthesis Photosynthesis doesn't happen at night (no light) Glucose fats and oils amino acids - (which are made from absorbing nitrate ions from the soil)
why do farmers want to increase the rate of photosynthesis how do they do this? increases the yield of crops produced by adding light and heat in green houses and carbon dioxide which is expensive.
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