Plants with and without seeds
Science, Grade 5
Plants with and without seeds
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Plants with and without seeds
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Plants with and without seeds
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Plants with and without seeds
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Plants with and without seeds
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Study Guide Plants with and without seeds Science, Grade 5
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PLANT REPRODUCTION There are MANY plants in the world. Some are plants that you know of and many you have never heard of before! Simple Plants Have you ever heard of a liverwort plant? Sounds like a plant that would be found in an enchanted forest. Liverworts are small plants that can be found in shady, moist areas. They are truly a very simple plant. They are not vascular and do not have true roots like most plants do; instead, they have rhizoids that anchor them to the ground. Lesson Checkpoint: What anchors liverworts to the ground? There are even plants that can reproduce without seeds, such as ferns and mosses. Mosses and ferns do not produce flowers so they do not produce seeds. A moss is a small, non-vascular plant that produces spores in order to reproduce. Ferns are plants that produce spores instead of seeds too. The Fern’s Life Cycle Below you will see a diagram of the life cycle of a fern. You will notice that a fern reproduces sexually, meaning its reproduction involves sperm and egg cells, from two parents. By what letter do you see the spores coming away from the parent plant? If you said C – you are correct!! Those spores spread out to other areas, land in the soil, and develop into NEW fern plants. © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.
The Life Cycle of Moss First moss produces egg and sperm cells, then fertilization occurs, then a spore stalk is developed. The spore stalk grows from the parent plant; spores are inside of the stalk all closed up in a spore case for safe keeping. Spores are finally released into the air around the parent plant and a new moss plant grows from the released spores. Spores vs. Seeds SEEDS SPORES produced by flowering plant? yes no multi-cellular embryo? yes no store food? yes yes Lesson Checkpoint: How do ferns and moss reproduce if they do not produce seeds? Types of Plant Reproduction Now we know sexual reproduction involves two parents and occurs with sperm and egg cells. There are other ways for plant reproduction to occur. Asexual reproduction involves only one parent and occurs without sperm and egg cells. There are several methods of asexual reproduction. Budding and runners are just two asexual methods possible. Budding is when a bud grows on a plant and then breaks off and grows as its own plant. Runners are new plants that form on the end of a parent plant’s long stem or leaf…notice the picture of the spider plant below: Lesson Checkpoint: What is the difference between sexual and asexual reproduction? © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.
There are also plants that do not flower BUT still produce seeds….(ahhh, so many kinds of plants – isn’t it fascinating!) Gymnosperms are vascular plants that produce seeds, but do not produce flowers. Coniferous trees, such as pine trees, are examples of gymnosperms. Look at the seed of a pine tree below: In what way do you think the wing on this seed would be helpful to the plant’s lifecycle? To help the seed fly away to a wonderful new spot to grow, of course! Most coniferous trees have male and female cones. Male cones are the small cones on a coniferous tree; their job is to make pollen. The larger cones on a coniferous tree are the female cones; their job is to produce eggs. The wind carries pollen from the male cones to the female cones. The female cones are also known as seed cones, because that’s where the seeds are kept. Lesson Checkpoint: What are gymnosperms? Flowers from Seeds Now, as you most likely know, MANY plants produce flowers and develop fruit around their seeds….these plants are known as angiosperms. © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.
Monocots vs. Dicots….what are these? Monocots are plants that only have one cotyledon in its seed. What’s a cotyledon, you ask? Let’s refresh your memory…a cotyledon is a leaf of the embryo of a seed plant. Like a corn plant. Monocots have two distinct characteristics: 1. Monocot leaves have parallel veins 2. Monocots usually have a fibrous root system. What are dicots then? Dicots are plants that have TWO cotyledons. Like a bean plant. Dicots have two distinct characteristics: 1. Dicot leaves have veins that branch out 2. Dicots usually have a taproot system So monocots and dicots are different in their types of roots and types of leaves. Lesson Checkpoint: What are two differences between a monocot and a dicot? © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.
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