Plants
- Created by: Will.I.am J Bentley
- Created on: 21-11-15 12:14
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- Plant Physiology
- Photosynthesis
- Process by which plants make food
- Light energy is converted to chemical energy
- Equation
- Carbon dioxide + water (along with sunlight and chlorophyll) goes to glucose and oxygen
- 6C02 + 6H2O ---- C6H12O6
- Rate of Photosynthesis
- Effects
- Carbon dioxide concentration
- Light intensity
- Temperature
- Effects
- Respiration
- Plants use oxygen and produce carbon dioxide during respiration
- Use Carbon Dioxide and produce Oxygen as a waste product
- Photosynthesis
- Process by which plants make food
- Light energy is converted to chemical energy
- Equation
- Carbon dioxide + water (along with sunlight and chlorophyll) goes to glucose and oxygen
- 6C02 + 6H2O ---- C6H12O6
- Rate of Photosynthesis
- Effects
- Carbon dioxide concentration
- Light intensity
- Temperature
- Effects
- Respiration
- Plants use oxygen and produce carbon dioxide during respiration
- Use Carbon Dioxide and produce Oxygen as a waste product
- Plants respire all the time, using oxygen and producing carbon dioxide
- Experiments
- During an experiment, you'll know if any starch is produced it is the result of photosynthesis
- To demonstrate starch is in the leaf
- Kill the leaf in boiling water
- Presence of Oxygen
- Use an aquatic plant, e.g. Canadian pondweed, in bright light
- Capture the gas produced
- Analyse it to show the raised oxygen levels
- Alternatively, count the number of gas bubbles given off
- Analyse it to show the raised oxygen levels
- Capture the gas produced
- Use an aquatic plant, e.g. Canadian pondweed, in bright light
- Necessity of Chlorophyll
- Use a variegated (green and water) leaf
- Of limited use because the products of photosynthesis could've been moved from one part of the leaf to another
- Use a variegated (green and water) leaf
- Process by which plants make food
- Photosynthesis
- Plants respire all the time, using oxygen and producing carbon dioxide
- Experiments
- During an experiment, you'll know if any starch is produced it is the result of photosynthesis
- To demonstrate starch is in the leaf
- Kill the leaf in boiling water
- Presence of Oxygen
- Use an aquatic plant, e.g. Canadian pondweed, in bright light
- Capture the gas produced
- Analyse it to show the raised oxygen levels
- Alternatively, count the number of gas bubbles given off
- Analyse it to show the raised oxygen levels
- Capture the gas produced
- Use an aquatic plant, e.g. Canadian pondweed, in bright light
- Necessity of Chlorophyll
- Use a variegated (green and water) leaf
- Of limited use because the products of photosynthesis could've been moved from one part of the leaf to another
- Use a variegated (green and water) leaf
- Process by which plants make food
- Structure of a leaf
- Adaptations
- Chloroplasts
- Contains Chlorophyll which helps the plant absorb light energy
- Stomata
- Pores which allow gases to enter and exit the plant
- Surface area
- For diffusion of gases
- Thin and flat so as much light can be absorbed
- Two outer layers
- The upper and lower epidermis have few chloroplasts and are covered by the cuticle
- Reduces water loss by evaporation and acts as a barrier to the entry of disease-causing micro-organisms such as bacteria and fungi
- The lower epidermis have many pores called stomata: they allow carbon dioxide to diffuse into the leaf, allow oxygen and water vapour to diffuse out.
- The upper and lower epidermis have few chloroplasts and are covered by the cuticle
- Xylem and Phloem
- The xylem carries water and mineral ions to supply the mesophyll
- The phloem carries the products of photosynthesis, e.g. sugar, to other parts of the plant
- Chloroplasts
- Growth
- Require mineral ions for growth
- Plant Physiology
- Structure of a leaf
- Adaptations
- Chloroplasts
- Contains Chlorophyll which helps the plant absorb light energy
- Stomata
- Pores which allow gases to enter and exit the plant
- Surface area
- For diffusion of gases
- Thin and flat so as much light can be absorbed
- Two outer layers
- The upper and lower epidermis have few chloroplasts and are covered by the cuticle
- Reduces water loss by evaporation and acts as a barrier to the entry of disease-causing micro-organisms such as bacteria and fungi
- The lower epidermis have many pores called stomata: they allow carbon dioxide to diffuse into the leaf, allow oxygen and water vapour to diffuse out.
- The upper and lower epidermis have few chloroplasts and are covered by the cuticle
- Xylem and Phloem
- The xylem carries water and mineral ions to supply the mesophyll
- The phloem carries the products of photosynthesis, e.g. sugar, to other parts of the plant
- Chloroplasts
- Growth
- Require mineral ions for growth
- Nitrates
- Needed to make amino acids to build proteins
- Magnesium
- Needed to make chlorophyll
- Require mineral ions for growth
- Leaves
- Make glucose from carbon dioxide
- Make water using light energy from the Sun
- The energy is captured by chlorophyll and converted to chemical energy in the glucose
- Oxygen is produced as waste product
- Adaptations
- Transport
- Osmosis
- Movement of water down a concentration gradient of water through a partially permeable membrane
- Water moves into and out of living cells by osmosis
- Plant cells need to be turgid to support the plant
- Diffusion
- Movement of solute molecules down a concentration gradient from a region of higher concentration of solute to a lower concentration
- Osmosis
- Structure of a leaf
- Plant Physiology
- Nitrates
- Needed to make amino acids to build proteins
- Magnesium
- Needed to make chlorophyll
- Require mineral ions for growth
- Leaves
- Make glucose from carbon dioxide
- Make water using light energy from the Sun
- The energy is captured by chlorophyll and converted to chemical energy in the glucose
- Oxygen is produced as waste product
- Adaptations
- Transport
- Osmosis
- Movement of water down a concentration gradient of water through a partially permeable membrane
- Water moves into and out of living cells by osmosis
- Plant cells need to be turgid to support the plant
- Diffusion
- Movement of solute molecules down a concentration gradient from a region of higher concentration of solute to a lower concentration
- Osmosis
- Photosynthesis
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