These seeds are very light. Seeds from plants like dandelions, swan plants and cottonwood trees are light and have feathery bristles and can be carried long distances by the wind. The longer a seed stays in the air, the farther it can be blown by the wind, helping the plant species widely scatter its offspring. • Pea and bean plants also keep their seeds in a pod. a) What are the conditions a seed need to sprout (germinate)? These natural adaptations for using the wind to transport the weight of the seed must be technically accurate, as the wings of modern planes and helicopters are designed in the same way. However, Jesus wants us to grow where we are scattered. Some seeds are scattered by birds and animals a. Have you ever blown on a dandelion head and watched the seeds float away? It's just a hard shell. In this science worksheet, your child learns about different ways seeds are scattered and uses clues to learn about 5 types of seeds. The birds eat the seeds and drop some. g) Name the plants that we got from Africa. wind, water or animals. light and fluffy parachute-like structures. Examples of seeds spread by the use of wings and tails are: Seeds that have almost weightless additions that enable them to be carried long distances by the slightest breeze are familiar all over the world. The biggest seeds of all cannot possibly be dispersed by the All of these require light seeds. small as grains of salt (e.g Foxglove), while others may be almost the size of golfballs (Isaiah 55:10-13). when conditions are right. Seeds can be wind dispersed, carried by animals, or germinated by fire. Plants rely on animals and wind and water to help scatter their seeds. • Many have hairy growths which act like little parachutes and carry the seeds far away from the parent plant. Rarely are all such seeds eaten. They are like seeds that are scattered to the wind. They are therefore Many more plants just need the wind to bend their stalks so that the seeds spill out of the seed pod. You can also 3. 6. Were these seeds scattered by the wind? (pg. These seeds are light in weight... 3. "Dispersal" means to spread or scatter. Sometimes, the seed is attached to fine hairs which open out when the seed is shed to form a ball. These seeds have an umbrella shaped top that works like a parachute. With wind dispersal, the seeds are simply blown about and land in all kinds of places. are minute and are easily blown about by the wind. air like mini helicopters. 7. Some seeds have only one wing (e.g. words, visit the Glossary. Maple seeds are scattered by the wind. Simply scatter the seeds form a ripe pod in a moist soil and let the plants grow First, some plants, like the burr at left, have barbs or other structures that get tangled in animal fur or feathers, and are then carried to new sites. Some plants even shoot the seeds out explosively. Seeds that can fly or glide. Larger wind-dispersed seeds are Several species of Ephedra in the driest deserts of North America, for example, are dispersed by either the wind or seed‐caching rodents (Hollander & Vander Wall 2009), whereas the ancestral condition is fleshy cones (Ickert‐Bond & Wojciechowski 2004) that are eaten by birds (Hollander, Vander Wall & Baguley 2010). Usually, the larger the seed, the more food Some tall trees produce seeds with stiff wings covering the seed that enable them to fly long distances. delays their fall to the ground. Water helps to scatter some … seeds are found to be useful to humans, and we spread them. History has cast us into many difficult furrows. larger and heavier the seed, the more difficult it becomes to disperse it effectively by grow. They just fall to the ground and start growing there. And many of us who saw the liquid balls of mercury scatter across a floor or countertop considered the element the most beautiful on the periodic table. c) What is there inside a seed? • The seeds of the orchid are almost as fine as dust. People often scatter seeds 4. P eople plant some seeds, but most plants don't rely on people. Many days I hear from someone telling me I wrote what they needed to hear. Some plants, like kauri and maple trees, have ‘winged’ seeds. Many adaptations to plant dispersal is … (a) Dandelion seeds are dispersed by wind, the (b) coconut seed is dispersed by water, and the (c) acorn is dispersed by animals that cache and then forget it. seeds like tiger nail stick on fur of animals. The common dandelion is a good example of this type of seed dispersal. differences in the amount of food reserves stored in the seed for the benefit of the embryo plant inside. Wind. Seed dispersal is the way seeds get away from the parent plant to a new place. Look for seeds with wings, such as maple and elm, or with downy parachutes, like the dandelion or thistle. 4. Larger wind-dispersed seeds are generally heavier and therefore require features such as parachutes or wings to help keep them aloft. h) Name the … Most of these syndromes have been recognized for centuries (Ridley, 1930; van der Pijl, 1982; Thanos, 1994) and have been well characterized. Seeds with wings c. Seeds that travel over the ground d. Seeds that travel over the snow and ice e. Seeds that are shaken out by the wind 2. Notes for Teachers can be found here. SCIENCE | GRADE: 3rd, 4th . This is wind dispersal. wind, or explosive techniques. Bulrushes produce many millions of dust-like seeds, each of which has its own tuft of fluff to give it a bigger area to be caught by the wind. 5. This often means that the seeds will not fall directly under the parent plant, because the stalk holding the seedpod is bent at an angle, so the seeds fall a little way from the parent. 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