Plants Flashcards
Is higher SA:Vol better
Yes, it maximizes efficiency. That’s why large organisms are multicellular
What does ground tissue do
Forms the bulk of the plant body
Stores food and provides support
Ground tissue in stem
Provides support and strength
Ground tissue in roots
Store food and water
Ground tissue in leaves
Location of photosynthesis
Palisade tissue cells
Responsible for photosynthesis
Spongy Mesophyll
Loosely packed for diffusion of gases
Vascular tissue
Transports everything around the plant
Xylem
Transports water
Phloem
Transports sugar
Shoot system
Everything above ground
Root system
Everything below ground
Meristems
The area of growth on the plant by the process of mitosis
Stomata
Tiny pores in the ground tissue of leaves
Guard cells
Specific cells that form stomata
Gas exchange process
It occurs by diffusion across membranes. Stomata diffuse CO2 into palisade and spongy mesophyll diffuse O2 and H2O out of leaf. Stomata will open when there’s movement of water and Potassium
Cellular respiration
Mitochondria use sugar to convert it into ATP. Carried out in plants and animals. Occurs day and night but most obvious at night when photosynthesis isn’t occurring
What must be done for substances to be transported
All substances must be dissolved first in water
Root hair function
Increases SA at roots for water intake
What is transpiration
The exhalation of water vapour through the stomata
Cohesion
Bond between water and water
Adhesion
Bond between water and a surface
What does adhesion and cohesion do
Draw water up xylem
Phototropism
Plants need to carry out photosynthesis therefore grow toward light
