Higher:
我可以给朋友讲解我画好的根部图画。
Middle:
我可以用描述性注解给根部图画作注解。
Lower:
我能画出根部形状的轮廓。
Higher:
我可以解释根的作用如何影响植物的生命。
Middle:
我可以描述根的作用。
Lower:
我可以列出根的作用。
What are the functions of the root?
Why can we eat some roots?
Why are roots so important to keeping a plant alive?
1. Children to be allocated a mark out of 5 for their practical experiment.
2. Children to be awarded a mark out 5 for their experiment write up.
(Award children a practical mark out of 10 for the lesson).
In vascular plants, the roots typically lie underneath the surface of the soil. Roots can also be aerial roots, which grow up above the ground and above water. They often look like branches without leaves. Did you know that the first root that comes from a plant is called radicle? Plants rely on roots for four major things: absorption of water and nutrients, anchoring the plant to the ground and providing support, storing food and nutrients and, vegetative reproduction and competition with other plants.
The cells are arranged as follows in roots: the root hair, epidermis, epiblem, cortex, endodermis, pericycle, and the vascular tissue in the centre that transports water absorbed by the root hairs. The root hairs do not have leaves and are long and thin so that they can penetrate through the soil particles. They have a large surface area which aids in water and nutrient absorption and with microbe relation. This is where most water absorption takes place.
Plants have three types of root systems: fibrous (all roots are the same size), taproot (has a main taproot that is larger and grows faster than the branch roots), adventitious (roots that form on any plant part other than the roots). Fibrous root systems are typical of grasses, carrots, beetroots and turnips. Taproot systems grow vertically downwards and are typical of dandelions and most dicotyledonous plants. Adventitious root systems are common of monocotyledons such as orchids and bromeliads.
Root vegetables grow underground and because of this absorb a large amount of nutrients from the soil. They tend to be jam packed with a high concentration of antioxidants, vitamin C, B, A, and iron. These all aid in cleansing your system. They also contain carbohydrates and fibre which help to regulate the digestive system and your blood sugar. Did you know that root vegetables are also disease fighting and immunity and energy boosting?
Explore the parts that flowers play in the life cycle of flowering plants; including pollination, seed formation and seed dispersal.
Planet Earth - Biodiversity and interdependence - Through carrying out practical activities and investigations, I can show how plants have benefited society. SCN 2-02b
The study of the characteristics, systems, and behaviours of humans and other animals, and of plants; the interactions and relationships between and among them, and with the environment.
Making systematic and careful observations and, where appropriate, taking accurate measurements using standard units, using a range of equipment, including thermometers and data loggers.
Recording findings, using simple scientific languages, questions, labelled diagrams.
Grade 4 - Plant life.
3 年级 - 生命科学 - 生物 - 生物一览 - 植物和植物的部位 - 植物的根和茎的作用？5 年级 - 生命科学 - 生命的多样性 - 生物王国 - 植物 - 什么是根？
说明植物通常由根、叶、花、果实和种子组成，这些部位具有相应的功能，帮助植物维持自身生存
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