Spirogyra is an algae. Algae are usually green-colored. They float in water. Spirogyra is a non-flowering plant. Non-flowering plants do not produce flowers.

Cedar is a naked-seeded plant (gymnosperm). The seeds of a gymnosperm are naked (exposed).

Plum is a closed-seeded flowering plant (angiosperm). The seeds of an angiosperm are enclosed in a fruit covering.

Mango is a flowering plant. Flowering plants produce flowers.

Mushroom is a fungus. Fungi are usually white-colored and hairy. They grow on dead matter. Mushroom is a non-flowering plant. Non-flowering plants do not produce flowers.

Guava is a flowering plant. Flowering plants produce flowers.

Cycas is a naked-seeded plant (gymnosperm). The seeds of a gymnosperm are naked (exposed).

Mushroom is a non-flowering plant. Non-flowering plants do not produce flowers.

Oak is a closed-seeded flowering plant (angiosperm). The seeds of an angiosperm are enclosed in a fruit covering.

Spirogyra is a non-flowering plant. Non-flowering plants do not produce flowers.

Ferns have leaves, stems, and roots. They are non-flowering plants. Non-flowering plants do not produce flowers. Ferns grow in cool regions such as plains and hills.

Wolffia ('least duckweed') is the smallest flowering plant. Flowering plants produce flowers.

Australian Eucalyptus tree is the tallest flowering plant. Flowering plants produce flowers.

Bacteria do not have leaves, stems, or roots. Bacteria are present in air, water, food, and soil. They are non-flowering plants. Non-flowering plants do not produce flowers.

Moss and riccia are green, non-flowering plants. Non-flowering plants do not produce flowers. Moss and riccia are observed on wet ground and wet walls.