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9.6-9.12 bio review
| Question | Answer |
|---|---|
| Where do vascular plants store starches? | In its root, which is the "sugar sink" |
| Where does photosynthesis occur (the sugar source)? | In the leaves of the plant. This is above ground. |
| Xylem | Tiny pipes made of dead cells that transport water and minerals from roots to shoots. Uses transpiration (roots to tips) |
| Phloem | Living cells that transport sugar from where it is made or stored to where it is needed. |
| Which plants are considered seedless vascular plants? | lycophytes and ferns |
| Why are seedless vascular plants taller than bryophytes? | Because they contain lignin and a vascular system |
| Why are seedless vascular plants restricted to a moist environment? | Seedless vascular plants release sperm that must swim through water to reach an egg |
| What are gymnosperms? | Plants that contain seeds within cones |
| What is a seed and what does it contain? | A seed consists of an embryo and food supply inside a protective coating |
| What is pollen? | a microscopic, dust-like grain which is released by the male cones or flower which contains the male gametes. |
| Which two types of plants reproduce using pollen and seeds? | Gymnosperms and Angiosperms |
| What is the sex organ of an angiosperm? | Flower |
| Endosperm | a food supply that will be absorbed during germination |
| What is a fruit? | a mature ovary |
| What are the vast majority of modern plants? | angiosperms, flowering plants |
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