The fruits of maple trees (Acer spp.) are called samaras, but kids of all ages call them helicopters. Each seed has its own little “wings” that allow it to spiral downward and plant itself in the soil below. Maples aren’t the only species that produce samaras, but their helicopters fly best, by far.

Some examples of trees with winged seeds are pine, maple, jacaranda and catalpa.

• Pines. Some pine trees have small seeds with papery wings that allow the seed to rotate as it falls out of the woody female cone when it opens.
• Maples. Maples (Acer spp.) have propeller-type winged fruits.
• Bignonia Family Trees.
• Tipu Tree.

Dandelion seeds

Definition. Referring to seeds with a wing-like extensions that surround the seed, are are two sides of the side, or extend from one end of the seed, all of which facilitate wind dispersal.

Maple seeds do not fall off the tree until the wings are quite dry. This has two advantages. For one thing it makes them lighter so that they will fly farther. When the seed lands between blades of grass, the wing may help the seed to stand vertically enabling it to more easily imbed into the ground.

Dispersal of seeds is very important for the survival of plant species. If plants grow too closely together, they have to compete for light, water and nutrients from the soil. Seed dispersal allows plants to spread out from a wide area and avoid competing with one another for the same resources.

“There are three parts of a seed.” “A bean or seed consists of a seed coat, an embryo, and a cotyledon.” “The embryo is the tiny plant protected by the seed coat.”

Plants cannot walk around and take their seeds to other places, so they have developed other methods to disperse (move) their seeds. The most common methods are wind, water, animals, explosion and fire.

hiptage seeds Water Seeds of those plants which grow along the banks of the rivers or seas on dispersed by water.

Spore Formation is a method in Asexual Reproduction. Many Spores are stored in sacs called Sporangia. When Sporangia burst; minute single-celled, thin or thick walled structures called spores are obtained. Under suitable conditions, they develop into a new Plant.

Spore formation or sporogenesis is the process of production of spores or reproduction via spores. Spores are asexual reproductive bodies. A spore is covered by a hard protective coat to withstand unfavourable conditions such as high temperature and humidity. So they can survive for a long time.

Organisms do not waste their energy unnecessarily in producing male and female gametes. Large numbers of spores are produced in one sporangium. Spores do not require any medium for dispersal. They are rounded and very light in weight and hence can be easily transferred for germination.

Spore formation is a method of asexual reproduction which is found in non flowering plants such as fungi (Rhizopus) and bacteria. The form of asexual reproduction in which the organism breaks down into no. of spores and later these spores develop into new organism is called spore formation.

For example , Bacteria are the unicellular organisms reproduce by spore formation whereas fungi such as Rhizopus ( bread mould ) and Mucor, and non-flowering plants such as are multicellular organisms which reproduce by spore formation method. [ => Underlined part is your answer. i.e., Ferns and mosses.

Spores are usually haploid and unicellular and are produced by meiosis in the sporangium of a diploid sporophyte. Under favourable conditions the spore can develop into a new organism using mitotic division, producing a multicellular gametophyte, which eventually goes on to produce gametes.

There are also different types of spores including:

• Asexual spores (e.g. exogenous spores produced by Conidia oidia)
• Sexual spores such as Oospores and Zygote.
• Vegetative spores (e.g. Chlamydospores)
• Megaspores of plants (female gametophyte)
• Microspores of plants (develop to formmale gametophyte)

a plant that reproduces and is dispersed mainly by spores, which are formed either asexually or sexually. Sporebearing plants are sometimes divided into lower forms (algae, bacteria, fungi, lichens) and higher forms (ferns, horsetails, club mosses, selaginellas, isoetes, and a number of fossil plants).

For spore-producing plants, the fertilization process occurs after, rather than before, spore dispersal. The pressure then forces the plant to eject thousands of small spore cells into the air. Spores can survive very harsh conditions and, since they contain no food matter in them, most predators will not eat them.

In plant: Class Polypodiopsida. Each frond is a potential sporophyll (spore-bearing leaf) and as such can bear structures that are associated with reproduction.

A sporophyll is a leaf that bears sporangia. Both microphylls and megaphylls can be sporophylls. In heterosporous plants, sporophylls (whether they are microphylls or megaphylls) bear either megasporangia and thus are called megasporophylls, or microsporangia and are called microsporophylls.