- Plant nutrition: absorption and transport of nutrients, transpiration, photosynthesis, respiration.
- Plant reproduction: the flower, pollination, fertilization, seed dispersal, germination.
- Plant interaction: plant hormones and growth.
Wikipedia: potometer. Learn how to make a potometer and to use it to measure plant transpiration.
Xylem transport (I). Very comprehensive animation showing how xylem sap is pumped from the roots to the leaves of a plant.
Seed dispersal. Flowering plants reproduce themselves by producing seeds, which provide the plants with a way to spread out and grow in new places, sometimes a long way from the parent. Learn how.
Flower structures, plant breeding, cross pollination, making crosses. This animations illustrates the structures of a flower, plant breeding, cross pollination and making crosses.
Questions: Plant TranspirationSource lesson
- Which are the two physical processes that allow the loss of water in the leaves?
- "If a plant wants to obtain water, it has to lose water". Is this assertion true? Why?
- Why is it good for a plant to lose water by transpiration?
- Why is it bad for a plant to lose water by transpiration?
- Why is transpiration important to keep a plant upright?
- How does transpiration make the replication of DNA possible?
- Where is the boundary layer thicker: around the leaves of a cactus or around the leaves of a poplar? Why?
- How does the rate of transpiration change when you take a plant from inside a house to a garden? Why?
- How does the rate of transpiration change when you start boiling water in the same room where you have a plant? Why?
Questions: Plant Reproduction
- There are two ways in which a plant can be hermaphrodite. Which ones?
- What is the minimum composition of a male flower?
- The anthers of grasses are very big and dangle out of the flower. Do you expect these flowers to have a colourful big corolla? Why?
- Which one of the three main parts of a pistil is the least necessary? Why?
- How many nuclei does each pollen grain have when it is fully developed?
- What is the mission of the tube nucleus of a pollen grain?
- There is one egg-cell inside each _______________. One ovary can contain one or several _______________.
- When fertilized, the ovules develop into _______________ and the ovaries that contain them develop into _______________.
- What is the micropyle?
- Why is plant fertilization called "double fertilization"?
- What are the main components of a seed? What is the function of each?
- How can a fleshy fruit help the dispersal of its seeds?