a) The processes affected in the plant that led to the decline in the yield are:

a) The processes affected in the plant that led to the decline in the yield are: Pollination and fertilization* (due to flowers remaining closed or falling off). Transpiration* (excessive water loss from leaves and flowers). Photosynthesis* (due to water stress affecting leaf function). b) The strong wind and heavy sunshine led to a decline in yield through several mechanisms: Reduced Pollination and Fertilization: The intense conditions caused flowers to remain closed or fall off. Closed flowers prevent pollinators from accessing them, hindering pollination. If flowers fall off, fertilization* cannot occur, directly reducing the number of beans formed. Increased Transpiration and Water Stress: Strong wind and heavy sunshine significantly increase the rate of transpiration*, leading to excessive water loss from the leaves. This caused the leaves to become wrinkled (wilting), indicating severe water stress. Impaired Photosynthesis: Under water stress, plants tend to close their stomata to conserve water. This reduces the uptake of carbon dioxide, which is vital for photosynthesis*. A lower rate of photosynthesis means less food production for the plant, resulting in fewer and smaller beans, thus reducing the overall yield. That's 2 down. 3 left today — send the next one.