Ecology Flashcards
What energy conversion do plants carry out?
Convert light energy into chemical energy
What substance is needed in photosynthesis
Chlorophyll in the chloroplasts
When does starch form in leaves
Starch can only be created if there is sunlight
How do you test for starch
Iodine
What is the process that uses glucose synthesis in photosynthesis
Cellular respiration
How do plants store starch
Roots and leaves. Some develop special organs to store the starch (potatoes).
When light intensity increases, photosynthesis does what?
The rate of photosynthesis increases
Cellular respiration word equation
Glucose+Oxygen —> Water+Carbon Dioxide+Energy
What is ATP
Adenosine Tri Phosphate. Is the form of energy the body can readily use
Two differences between Cellular Respiration and Photosynthesis
- Photosynthesis requires Chlorophyll
- Photosynthesis needs sunlight
Name 4 processes that use energy produced by cellular respiration
Moving, reproduction, growing, repairing
What does Xylem do? Where is it located?
Forces water and nutrients up throughout the plant and through the roots. Xylem is the middle part of the plant stem.
What does Phloem do?
Brings extra waste and water down the plant and also brings things up the plant. It’s a 2 way system and in the outer layers of the stem
What are Xylem and Phloem
Tissues in a plant that form tubes for transportation
Three mechanisms formed in the movement of water from xylem
Root pressure, capillarity, osmosis
Photosynthesis equation (chemical)
Sunlight
6CO2+6H2O————> C6H12O6+6O2
Chlorophyll
What does transportation do and how does it work?
Releases water from the plant into the air from the stomata
What causes wilting?
The transpiration rate is faster than the amount of water being absorbed by the roots
What happens when suction is created
Water is being absorbed by the roots
How is suction force created
By transpiration releasing water vapour
Which part of the plant is most vital in food preparation
Leaves
Why is the two way system of phloem important to the plant
Ensures movement to all areas of the plant. Eg glucose is only created where sunlight reaches the plant and phloem can move it to places without sunlight
Why are roots important for plants
Anchors plants to the ground and provides them with water and nutrients from the soil
Difference between root and leaf epidermis
Leaves use epidermis to keep water in. Epidermis in the roots allow water to be taken in
