Adaptations for Survival L1: Plant Adaptations Learning Objectives: 1.Recall environmental factors...
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Transcript of Adaptations for Survival L1: Plant Adaptations Learning Objectives: 1.Recall environmental factors...
Adaptations for SurvivalL1: Plant AdaptationsLearning Objectives:1. Recall environmental factors that plants require to survive.2. Describe plant adaptations to deal with different
environments.3. Explain how different adaptations help the plant to survive.
What do plants need to survive?
•Sunlight •Water•Nutrients from the soil•Space•Correct temperature
What do they need these for?
Sunlight for Photosynthesis
• Light energy (from the sun) is needed for photosynthesis.• This happens inside the
chloroplast.• The energy is used to convert
carbon dioxide and water into glucose.
Carbon Dioxide + Water Oxygen + Glucoselight
Respiration: glucose is used for energy
• Glucose is used as fuel (food) for the plant.• Respiration (the “opposite” of
photosynthesis) releases the energy stored in the glucose molecule.• The plant is able to use this energy for all of
it’s necessary processes.
Glucose + Oxygen Carbon Dioxide + Water
Adaptation = a feature that helps an organism to survive
• Some plants are adapted to growing in lower levels of lights.
Adaptations:• Larger leaves to catch more
sunlight• Different colours to absorb more
wavelengths of light
What do plants need to survive?
•Sunlight •Water•Nutrients from the soil•Space•Correct temperature
What do they need these for?
Water is needed for photosynthesis and support
• If plants do not have enough water they wilt and die.• Plants take in water from the soil
through the roots.• However, water is lost through
stomata (openings to let gases in and out).•More water is absorbed to replace
the amount lost.
Adaptations to Dry Conditions
• Some plants are adapted to growing in dry conditions.
Adaptations:• Spines reduce water loss (small
surface area)• Large stem stores water• Large root systems to absorb
more water
What do plants need to survive?
•Sunlight •Water•Nutrients from the soil•Space•Correct temperature
What do they need these for?
Nutrients are needed for the plant to grow and function properly
• Nutrients from the soil are absorbed by roots.• Plants without proper nutrients can change colour
and not be able to photosynthesise.
Adaptations to Nutrient Poor Soil
• Some plants are adapted to living in nutrient poor soil.
• Adaptations:• Carnivorous plants eat insects to gain
extra nutrients.
What do plants need to survive?
•Sunlight •Water•Nutrients from the soil•Space•Correct temperature
What do they need these for?
Plants need space to survive
• Some plants are adapted to crowded environments.
• Adaptations:• Some plants wrap around larger plants and
grow around them to reach sunlight blocked by other plants.
What do plants need to survive?
•Sunlight •Water•Nutrients from the soil•Space•Correct temperature
What do they need these for?
Warmer temperatures are better for plant growth
• Photosynthesis is faster in warmer temperatures.• Very cold temperatures can also cause
plant cells to freeze and damage them.• Adaptations:• Thick, waxy coverings protect against
cold and water loss.• Grow in clumps and low to the ground
to reduce effect of wind.
What do plants need to survive?
•Sunlight •Water•Nutrients from the soil•Space•Correct temperature
What do they need these for?