Unit B Section 1 Flashcards
The function/structure of a stem is
Water and nutrients are transported between the leaves and the roots.
Stems support the leaves and ensure the leaves receive adequate light.
The food produced in the leaves is stored in the stem
The function/structure of a leaf is
Produce food for the plant by collecting energy from the sun and changing it to chemical energy (food).
Take in and release oxygen and carbon dioxide.
Water enters and leaves the cells of the leaves through guard cells.
(stoma/stomata)
The function/structure of a seed is
Seeds contain an embryo that will form a new plant. They also contain a food supply for the embryo.
The function/structure of a cone/flower is
Both cones and flowers have male and female parts for reproduction.
Osmosis
Water from the soil enters root cells by a process called osmosis.When the concentration of Water and soil is greater than the concentration of the water in the roots, water moves into the root cells.
Diffusion
Diffusion happens when there is a difference in concentration. Particles move from an area of high concentration to low concentration. Ex - food colouring in water or perfume in a room
Capillary action
Another process that helps water move up through a plant is called capillary action.
Water particles are attracted to each other and to the sides of the tubes in the roots and stems. This attraction causes water particles to ¨stick” together and move up inside the plant, moving against gravity.
Transpiration
Water particles evaporate from the surface of the leaves and more water particles move up within the plant to take their place.The loss through evaporation is called Transpiration.
Photosynthesis
The energy of the sun is trapped in the leaves and changed into chemical energy. Carbon dioxide and water are used by the leaves in the process called photosynthesis, to make sugar and give off oxygen.
Cellular Respiration
During cellular respiration, plants release carbon dioxide and let oxygen into their cells.
Seedling Stage
Growth is very fast producing new leaves, root, stem and their own foos. Still need nutrients from the soil.
Adult Stage
A plant is an adult when it produces reproductive structures (flower or cone).
Ovary
Female part of the flower.
Stigma
Male part of the flower and where the pollen is deposited.
Nectar
Is what attracts the pollinators.