Most of your favourite plants, such as grass and trees, have seeds. That is how they replicate or reproduce. Seeds are not generated by other plants. Mosses, liverworts, clubmosses, ferns, and horsetails are examples of seedless plants. They replicate by spore formation. Spores are often held in tiny, bumpy cases on the leaves or stems of these plants.
Here are some of the plans without seed.
Kelp
Kelp is a type of plant without seeds. Kelp is a type of large brown algae and it’s also an edible seedless plant.
Algae
Algae can be tiny microscopic organisms called phytoplankton that is a food source of many marine animals. Or, some types of algae are commonly called seaweed and are found in waters around coastlines.
There is also some confusion whether species of algae are truly types of plants. Like many plants, algae use a process of photosynthesis to make food. Interestingly, some types of algae seem to have the ability to “eat” other organisms similar to animals. However, most people view algae as types of plants. (1, 2)
Green Algae
Green algae generally grow in freshwater, although they also grow in saltwater. Individual alga (singular of algae) of some species are tiny microscopic organisms. If they are in abundance, they can turn ponds or seawater green. Similar to brown algae, some green algae grow as seaweed.
Red Algae
Red algae (Rhodophyta) consist of the largest group (phyla) of all algae species and the majority grow in marine environments. As with all kinds of algae, red algae are plants that don’t produce seeds. Red algae are also an important food source and are the type that is used for nori.
Liverworts
Liverworts (nonvascular flowerless plant). Liverworts include many species of plants such as Lunularia cruciata.
Liverworts are a type of nonvascular flowerless plant that don’t bear seed and are in the division Marchantiophyta. These small leafy plants may be as tiny as 2 mm or grow to 20 mm wide. Liverwort plants tend to flourish in damp places.
Tiny species of liverworts can be difficult to distinguish from mosses. One way to identify liverwort plants is that they are generally smaller and have tiny hair-like structures (rhizoids) they use to absorb water.
Moss
Moss is a type of small flowerless plant that prefers damp or shady places. Although mosses were classified with hornworts and liverworts in the Marchantiophyta group, they are now in a classification of their own. There are 8 classes of mosses with the peat-moss Sphagnum being the most commercially important. Sphagnum moss is an unusual plant that is commonly used as mulch, for home decoration, or in the florist trade.
Ferns
Ferns are green plants that thrive in damp shady areas. Ferns are a type of plant that thrive in damp shady areas.
Ferns are identified by their green leafy foliage consisting of fronds and pinnae. Outdoors, ferns grow in forests and love damp shady areas. Some of the tallest ferns in the world can grow up to 82 ft. (25 m) tall.
Ferns are also examples of common indoor bedroom houseplants that thrive well in room temperature. Their bushy green foliage and long, trailing leaves can add beautiful greenery to a room.
Some common species of ferns to grow indoors include Boston ferns, staghorn ferns, and the bird’s nest fern. Many types of perennial ferns are also popular plants for gardens as they grow in areas where other plants can’t. Ferns are good examples of ground cover plants, especially in shady areas.
