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Apologia Elem Botany
Lesson 7: Roots
| Question | Answer |
|---|---|
| What are the three main jobs of roots? | To absorb nutrients and water from the soil, to hold the plant in place like an anchor, and to prevent erosion. |
| Explain why root hairs are important. | Root hairs do most of the work of absorbing water and nutrients for the plant; without them the plant would die. |
| Where do roots add to their length? | Roots grow longer from the tip, adding cells to the end of each root. |
| What is the root cap? | The strongest part of the tip of the root. It's made up of a group of tough cells whose job is to push through dirt in search of moisture and nutrients. |
| What are the roots always looking for? | Water and nutrients |
| What is geotropism? | A root's special sense that tells it to turn and grow down into the Earth |
| What is another name for geotropism? | Gravitropism, meaning turning in the direction of gravity |
| Tell me about rooting a plant. | You take a healthy stem, branch, or even leaf from a plant and put it in soil or water to grow and new plant of the same kind. It is considered a clone, or copy, of the original plant because it has the same DNA. |
| Three chemical elements plants need as very important nutrients. What are they? | Nitrogen, phosphorus, and potassium |
| If a plant isn't very green, then they might not have enough of this chemical. | Nitrogen |
| What does phosphorus provide a plant? | The energy they need to grow |
| Why do plants need potassium? | For photosynthesis |
| What are the two main kinds of root systems? | Taproot systems and fibrous root systems |
| What grows out of bulbs? | Roots |
| What is stored in a bulb? | It stores special leaves and a short stem |
| What is each layer of a bulb? | A special kind of leaf |
| Name some examples of bulbs | Onions and garlic |
| Name the types of geophytes. | Bulb, rhizomes, corms, and tubers |
| What is a common tuber we often eat? | Potatoes |
| What is rooting a plant? | It is to take a healthy stem or branch from a plant and put it in soil or water |
| What are plants grown by rooting called? | Clones |
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Sheri8
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