Plants Flashcards
Flower
Purpose is for reproduction , it makes seeds and contains the female and males sex organ
Leaf
Makes food (photosynthesis) , cools the plant when water vapor passes through it , allows the exchange of carbon dioxide to oxygen and the leaf stores food (Eg - lettuce)
Fruit
Protects the seeds provides food for the seeds (Eg - apples the seeds are inside the apple)
Bud
Allows new leaves and flowers to grow
Stem
Allows the transport of food , water and minerals around the plants . It also supports the plant and holds of upright and stems sometimes store food
Roots
Anchor and support the plant , they can take in water , nutrients and sometimes store food
Transport in plants
These are vessels in a plant , the xylem and phloem
Xylem
Water is absorbed the light the roots and travels to the leaves , minerals from the soil are dissolved in the water and travel to the leaves
Phloem
Food from the leaves travel through this to other parts of the plant
Transpiration
Is the loss of water vapor from the stomata on the underside of the leaves
Stomata
Holes on the underside of the leaves
Transportation stream
The flow of water from the roots up to through the plants and out the leaves
Stimulus
Anything that cause a reaction in a organism . Plants respond to the stimuli of light and gravity
Stems tropism
Stems are positively phototropic and negatively geotropic
Roots tropism
Roots are negatively phototropic and positively geotropic
Geotropic
Attracted to the gravity
Phototropic
Attracted to sunlight
Why is geotropism good
Makes sure the roots go down and get all the minerals and water in the soil . The plant is anchored to the soil and won’t fall over
Why is phototropism good
It makes sure the plants gets light so they can make food
Photosynthesis
The process where plants make food using the sun light
Chlorophyll
Green chemical needed in photosynthesis process and can be found in chloroplasts in the plant cell
How are leaves designed for photosynthesis
They are flat and thin to allow sunlight to get through them . The have little holes called stomata to let carbon dioxide in and oxygen out
Male cells
Pollen
Female cells
Egg