There are a few things to consider when answering this question. While it is true that most plants have green leaves and use chlorophyll to do photosynthesis, not all plants are the same. Here are some points to consider:


While chlorophyll is the most common pigment used by plants to capture sunlight and turn it into energy, there are other pigments that can also be used. For example, some plants have red or purple pigments called anthocyanins that can absorb sunlight and contribute to photosynthesis.


While red leaves can be a natural trait of some plants, they can also be a sign of stress. For example, if a plant is not getting enough light or nutrients, it may start to produce more anthocyanins as a response. In this case, the red leaves may indicate that the plant is struggling to do photosynthesis, but it is not necessarily true that the red color itself is preventing photosynthesis.


Photosynthesis is not just a matter of having the right pigment. It is a complex process that involves many different steps and factors, including light intensity, temperature, water availability, and more. Even if a plant has the right pigments, it may not be able to do photosynthesis if other conditions are not optimal.


In summary, while it is true that most plants use chlorophyll to do photosynthesis and have green leaves as a result, it is not necessarily true that a plant with red leaves cannot do photosynthesis. Some plants have other pigments that can also contribute to photosynthesis, and the color of the leaves alone does not determine whether photosynthesis is happening or not.

True Red-coloured leaves of plants do not photosynthesise as they lack the green pigments (chlorophyll)