Adaptive features of plants to desert conditions include

Explanation

Plants that live in the desert environment face unique challenges such as high temperatures, low water availability, and high salinity. These conditions have led to the development of adaptive features that help them survive. One of these adaptive features is having thick barks, succulent stems, and sunken stomata, which is the correct answer to the question. Thick barks provide insulation for the plant against the high temperatures, while succulent stems store water for the plant during prolonged periods of drought. Sunken stomata help to reduce water loss by keeping the stomata below the surface of the leaf, where it is cooler and less windy. Option B on the other hand, thin barks, succulent stems, and sunken stomata, is incorrect because plants with thin barks would not be able to withstand the harsh desert environment as it will not provide enough insulation for the plant. Option C, thin barks, air floats on stems, and sunken stomata, is also incorrect because while air floats on stems can help with buoyancy, it does not help with the plant's survival in the desert environment. Option D, air spaces on tissues, adventitious roots, and thin barks, is incorrect because air spaces on tissues do not provide any benefits to the plant in the desert environment, and adventitious roots are not an adaptive feature of plants in the desert environment. In summary, the adaptive features of plants in the desert environment include thick barks, succulent stems, and sunken stomata to help them survive in the harsh conditions of the desert.