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Unit B Plants
types and parts of plants
| Question | Answer |
|---|---|
| A very short green plant that does not have true leaves, stems and roots. | moss |
| A new plant is produced without the joining of a sperm and an egg cell. The stalk produces spores. | asexual reproduction |
| A structure that contains cells that can grow into a new plant without joining with other cells. | spores |
| A vascular plant that has feathery fronds and reproduces without seeds. | fern |
| A seed-bearing plant whose seeds are not surrounded by a container. They are also called nonflowering plants. | gymnosperms |
| These plants grow cones. The cones are the reproductive structures that produce seeds. It means "cone bearer". | conifer |
| Spores from the male cone develop into this. | pollen |
| Spores from the female cone stay inside the cone and develop into this. | egg cells |
| How do mosses help the environment? | They keep the soil from being washed away. After they die, they enrich the soil with nutrients and organic matter. |
| How do mosses differ from vascular plants? | Mosses do not have xylem, phloem, or true roots, stems, and leaves. |
| How are liverworts and hornworts similar to mosses? | All grow in the same environment. All have two generations: the first reproduces by spores. All are small and are not vascular. |
| These structures contain spores. They may be different shapes and arranged in different patterns. | sori |
| When a fern spore falls to the ground, it grows into a tiny heart-shaped plant called a what? | prothallium |
| What structures are involved in the asexual generation of a fern? | sori and spores |
| How do gymnosperms differ from ferns? | Gymnosperms reproduce by seeds. Ferns reproduce by spores and egg and sperm. |
| How do male and female cones differ? | Male cones produce pollen grains which are blown to the female cones. The female cones produce egg cells that become seeds. |
| How are conifers adapted to dry conditions? | The seeds are protected by cones to survive the dry weather. The leaves have a small surface area and waxy covering to prevent water loss. |
| Where are most conifers found? | In northern regions because conifers are adapted to the freezing winters. |
| Why do ferns need a damp environment to reproduce? | The sperm cells need water to reach the egg cells. |
| What adaptation enables ferns to grow well with little light? | The fronds have a large surface area that enables them to take in the light. |
| A vascular plant that produces flowers. | angiosperm |
| What are two main characteristics of angiosperm? | They produce flowers and make fruit |
| The male reproductive organ of a flower. | stamen |
| One part of the stamen that produces pollen grains. | anther |
| The part of the stamen that connects the anther to the plant. | filament |
| The female reproductive organ of the flower. | pistil |
| The sticky part of the pistil that holds pollen grains. | stigma |
| The stem like part of the pistil that connects the stigma to the ovary. | style |
| The part of the flower that contains ovules in which the egg cells develop. | ovary |
| This occurs when the pollen from the anthers lands on the stigma. | pollination |
| What are three adaptations that help angiosperms live on land? | They produce flowers and fruit, and have efficient vasucular tissues. |
| What parts of the flower produce pollen | anthers |
Created by:
Mighty Martin