Question

Какие цвета имеют опавшие листья? Чем это объясняется?

Answer 1

Опавшие листья имеют жёлтый.или коричневый цвет,это говорит о том,что они уже не фотосинтезируют,к ним не поступает влага,(через жилки),они умирают и гниют.образую перегной

Answer 2

Colors of Fallen Leaves and Their Explanation

Fallen leaves can come in a variety of colors, ranging from vibrant reds and oranges to golden yellows and browns. The colors of fallen leaves are primarily due to changes in pigments within the leaves as they prepare for winter and eventually detach from the tree. Here are some common colors of fallen leaves and their explanations:

1. Red Leaves: Red leaves are often a result of the presence of anthocyanin pigments. Anthocyanins are responsible for the red, purple, and blue colors in many plants. As the chlorophyll in the leaves breaks down, the anthocyanins become more visible, leading to the vibrant red color. Factors such as sunlight, temperature, and genetics can influence the intensity of red coloration in leaves.

2. Orange Leaves: The orange color in fallen leaves is primarily due to the presence of carotenoid pigments. Carotenoids are responsible for the yellow, orange, and red colors in many plants. As the chlorophyll breaks down, the carotenoids become more visible, resulting in the orange hues seen in autumn leaves.

3. Yellow Leaves: Yellow leaves are also a result of carotenoid pigments. As mentioned earlier, carotenoids are responsible for the yellow coloration in leaves. When the chlorophyll breaks down, the carotenoids become more prominent, leading to the yellow hues observed in fallen leaves.

4. Brown Leaves: Brown leaves are typically a result of tannins and other waste products that accumulate in the leaves as they age and prepare to fall. These waste products can cause the leaves to turn brown or even black. Additionally, the breakdown of chlorophyll can contribute to the brown coloration of fallen leaves.

It's important to note that the specific colors of fallen leaves can vary depending on the tree species, environmental conditions, and other factors. The combination of different pigments and their concentrations within the leaves determines the final color observed during the autumn season.

I hope this information helps! Let me know if you have any more questions.