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6gr Science Seeds
6gr Science Seeds Sec 1, 2, 3
| Question | Answer |
|---|---|
| Fruits are ... | the protective coating of a seed. |
| What two characteristics do all seed plants share? What else do they have in common? | All seed plants have vascular tissue and use seeds to reproduce. Seed plants also have leaves, stems, and roots and complex life cycles. |
| What are the two types of vascular tissue? What does each of them do? | The two types of vascular tissue are xylem and phloem. Phloem moves food and xylem moves water and nutrients. |
| Why don’t seed plants need water in their environment to reproduce? | Seed plants do not need water to reproduce because the egg cells are protected in a moist environment. |
| What are the three parts of a seed? | The three parts of the seed are the embryo, cotyledon, and seed coat. |
| What does each part of a seed do? | The embryo is the fertilized egg, the cotyledon stores the food for the embryo, and the seed coat keeps the embryo and food from drying out. |
| What is the scattering of seeds called? What are three methods? | The scattering of seeds is called ‘seed dispersal.’ The three methods of seed dispersal are: animals, wind, and water. |
| What is the main purpose of leaves? | The main purpose of leaves is to capture the sun’s energy and complete photosynthesis. |
| Using vascular terms, how does photosynthesis occur in leaves? | Chlorophyll in the leaf’s chloroplast captures the sun’s energy. Carbon dioxide enters through the stomata. Water travels up through the xylem. As glucose & oxygen are created, the oxygen leaves through the stomata. |
| Next steps of photosynthesis ... | glucose travels down through the phloem to other parts of the plant. |
| Know ‘Exploring a Leaf’ | |
| How do plants control transpiration? | In order to control transpiration, leaves close the stomata. |
| What are the two important functions of a stem? | The two important functions of the stem are to carry substances between the roots and leaves and to provide support for the plant and hold up the leaves so they are exposed to the sun. |
| Compare and contrast woody and herbaceous stems. Give at least TWO similarities and differences. | Woody and herbaceous stems each contain vascular tissue and supporting cells. Woody stems contain bark, cambium, and heartwood, causing them to be rigid. Herbaceous stems ate soft. |
| What are the two main functions of roots? | The two main functions of roots are to anchor the plant and to absorb water and nutrients from the soil. |
| Compare and contrast fibrous roots and taproots. | Fibrous roots and taproots are both types of roots. Taproots contain a long, thick root. Fibrous roots contain several roots that are tangled together. |
| All gymnosperms have 3 characteristics: ____________. Gymnosperms’ seeds are called ____ because they are not enclosed by a protective covering. | produce naked seeds, have needlelike or scalelike leaves, and deep-growing root systems, naked |
| The four groups of gymnosperms are: __________. | Cycads, Ginkgos, Gnetophytes and Conifers |
| Cycads were once_______, but are now only found in tropical regions. They look like______. | the most prominent plants on Earth, palm trees with a large cone. |
| Ginkgos are _____. | old and only Ginkgo biloba, exists today |
| Gnetophytes exist only ________. | in hot deserts and rain forests |
| Conifers, or cone-bearing plants, are _______. They have needles that are replaced throughout the life of the plant and _____. | the largest group of gymnosperms on Earth, stay green all year long. |
| Gymnosperms have ______ cones. The pollen from the male cone falls onto the female cone. The _____ from the female cone join together to create a _____. | male and female, pollen and egg, zygote. |
| Female cones _____ when the seeds are _____. When they mature, the cone ______. The scales open and the _____ shakes the seeds out of the cone. | point upward, immature, points downward, wind |
| The Life Cycle of a Gymnosperm: 1) The sperm and egg cells _____. 2) Wind scatters __________ where it fertilizes the egg. 3) The fertilized egg _______ and the ovule _____. 4) The wind disperses the _____. | develop in cones, pollen into the female cone, becomes an embryo, becomes the seed coat and cotyledon, seed. |
| The word angiosperm comes from the _____. | Greek word meaning 'seed in a vessel.' |
| Two characteristics of angiosperms____. | is that they produce flowers and fruits. |
| The main function of a flower is to _____. | reproduce |
| Draw a picture of a typical flower and label its parts. Know the specific role and function of each part (and which are male and which are female if applicable). | |
| The Life Cycle of an Angiosperm: 1) The angiosperm produces _____. 2) The pollen is trapped in the ______. 3) The fruit encloses the _____. 4) A seed grows into a ____. | 1) flowers, an egg cell, and pollen, 2) stigma, goes down the pollen tube, and fertilizes the egg (pollination), 3) seed and helps in seed dispersal, 4) new plant |
| Most angiosperms rely on _____. An animal, such as a bee, is attracted to the flower and ______. | animals to pollinate, carries pollen grain onto the stigma |
| The most common method for an angiosperm's seed dispersal is _____. | animals |
| Create a chart comparing monocots and dicots. Include as many comparisons as you can! | |
| Angiosperms are important to the modern world because they: | 1) provide food (fruits and vegetables, grains). 2) provide clothing (cotton). 3) provide medicine (aspirin) |
Created by:
younghml