a leaf is green
Plants with an alternate leaf arrangement typically have a single leaf at each node, but if you observe two leaves at a node, it's likely a case of a "distichous" arrangement, where leaves are arranged in two vertical ranks. However, true alternation means that leaves spiral around the stem, with each node bearing one leaf. Examples of plants with such arrangements include certain species of Dracaena and some types of Eucalyptus. For clarity, if you're seeing two leaves at a node, consider looking into a "whorled" arrangement or a variation of leaf development.
Spirogyra is a type of green algae, named for the spiral arrangement of the chloroplasts. The arrangement of the chloroplasts are helical or spiral.
alternate
Two
whorled Being a member of the family Lamiaceae, basil leaf has opposite arrangement
Spirogyra is a type of green algae, named for the spiral arrangement of the chloroplasts. The arrangement of the chloroplasts are helical or spiral.
Opposite arrangement
alternate
The phyllotaxy of a lotus leaf is known as alternate spiral phyllotaxy. This means that the leaves are arranged in a spiral pattern along the stem, with each leaf emerging at a consistent angle from the previous one. The alternate arrangement allows each leaf to receive maximum sunlight and airflow, optimizing photosynthesis and transpiration processes. This phyllotactic pattern is common in many plant species and is an adaptation for efficient resource utilization.
Two
spiral arrangement of chloroplasts in these algae
Ivy plants have alternate leaf arrangement, which means that leaves are arranged along the stem in an alternating pattern. Each leaf grows in a staggered formation rather than directly across from each other.
Spiral
single
Leaf veins.
alternate
whorled Being a member of the family Lamiaceae, basil leaf has opposite arrangement