There are several parallels between aquatic and terrestrial plants. Both types of the plant are green and have leaves, roots, and the potential to blossom. Land plants are usually higher than they are wide, and they have a branching root structure. Water plants do not get any taller than about 1 meter (3 feet), and their stems only branch near the top. Furthermore, both land and water plants contain water-soluble nutrients that can be taken up by other plants for use in growth and reproduction.
Another similarity is that both land and water plants grow in habitats with similar conditions: soil, sunlight, water. The only difference is that in the case of water plants, there is no air space above them, so they need to live under water if they are going to survive. On the other hand, land plants can grow out of water, although they usually don't stay in water for very long because it's too hot outside of a water body during the day time.
Finally, both land and water plants produce oxygen as a byproduct of photosynthesis. This shows that they share many similarities despite being from different environments.
Water plants often have broader, spongier leaves that allow them to float in water. Aquatic plants do not grow roots in the earth. They obtain their nutrients from the water they live in.
Both land plants and water plants spread by means of spores or seeds produced within pods or fruit. These spores or seeds are then released into the soil or water where they can grow into new plants. Land plants spread by means of rhizomes, which are thick stems that grow horizontally away from the parent plant and branch repeatedly until they reach the air or water with their growing tips. Each plant division is called an axel. Rhizomes can be broken down into two parts: nodules and roots.
Aquatic plants spread by means of stolons. Stolons are long, thin branches that grow downward from a plant's stem or upward from a leaf node. They seek out better growing conditions than what the parent plant offers and continue to grow until they find some protection or food that encourages them to stop developing. When stolons meet at their base, they form a heart-shaped bud that will eventually become a new plant. Some species of aquatic plants spread by means of tubers instead of stolons. Tufts of white or yellow flowers may rise above the water among the leaves of floating plants.
A terrestrial plant is one that grows on, in, or from the ground. Other plant kinds include aquatic (plants that live in water), epiphytic (plants that live on trees), and lithophytic (plants that live on rocks).
Terrestrial plants are divided into two groups: vascular plants and nonvascular plants. Vascular plants include all those plants that have conducting vessels such as roots, stems, and leaves. These vessels carry nutrients and minerals from the soil to the rest of the plant through their connection with other organisms - mainly fungi and bacteria - in a process called "mycorrhization". Nonvascular plants include mosses and liverworts. They also contain no vascular systems but instead obtain oxygen and nutrients from the air and sunlight directly through their leaves or thalli (the whole organism including its leaves). Most seed plants are vascular plants.
There are four major divisions of terrestrial vegetation: grasses, herbs, shrubs, and trees. Each division has many species of plants that have similarities in their growth forms and functions.
Herbs have slender, spiky, leafy plants that do not reach more than 30 cm (12 inches) in height. Some examples of herbs are basil, mint, and rosemary. Shrubs have bushy plants that can grow up to 90 cm (3 feet) in height.
A terrestrial plant is one that grows on, in, or on top of the earth.
Vascular plants include herbs, shrubs, trees, and flowering plants. Herbs have thin, soft stems with easily broken off leaves. Trees have woody stems that can grow large and may have leaves, flowers, or fruit at the end of their branches. Shrubs have short, stout stems that do not reach the height of a tree but may bear leaves like those of a herb or flower. Flowering plants have flowers that produce seeds or fruits that spread by pollination/scavenging insects. Vascular plants are divided into three groups on the basis of their growth habits: rosids, which include most fruit trees; legumes, which include peas and beans; and malvids, which include cotton and sugar cane.
Nonvascular plants include fungi, algae, and some bacteria. Fungi are responsible for some major changes in history when they cause diseases. Algae are single-cell plants that lack roots, stems, and leaves. They derive their nutrients from the air and sunlight and do not need to connect to other plants for water or carbon dioxide.
Land plants are terrestrial plants with a more robust root and branch system. Water plants, on the other hand, exist in watery conditions and hence lack a complex root and shoot system. This is the primary distinction between land plants and water plants. However, there are subgroups within each category that show some overlap in characteristics.
Key differences: Land plants have a more complex root system than water plants. Water plants lack a defined stem and leaf structure like land plants. Land plants include mosses and liverworts which are not water plants but rather primitive forms of life without a protective skin or hairs. Mosses do have roots but they are thin structures that spread out horizontally to find soil moisture. Liverworts have no true leaves but rather flat organs that function as leaves. They are found attached to submerged objects in water bodies throughout the world.
Mosses and liverworts do not respond to light signals like plants do so they cannot grow if they are kept in darkness. However, both groups will expand their tissues if exposed to sunlight during the right time of year. This is called "photomorphogenesis" and it is what gives rise to green coloration on these organisms.