Signs of tomato plant diseases include halted growth, yellowing leaves, premature fruit ripening, dark spots on leaves, leaf curling and white scabby lesions on tomatoes. Symptoms vary according to the type of infection ... More » Science Biology Botany

Photosynthesis takes place in plant leaves, and in some small part, in the stem. Specifically photosynthesis takes place in the mesophyll cells where the chloroplasts are located in a leaf. More » Science Biology Botany

Tomato blight is a fungal growth that affects the leaves and fruit of the tomato and potato plant. It generally begins on the leaves. While difficult to control once it reaches the fruit, there are some steps to prevent ... More » Home & Garden Gardening & Landscapes
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How Stuff Works explains that water reaches the leaves of plants through the xylem vessels, and it escapes through small holes in the leaf known as stomata. The process by which the water moves from the capillaries to th... More » Science Biology Botany

Signs of emerald ash borer infestation in ash trees include the thinning and death of upper branches in the canopy and sometimes new sprouts emerging from the trunk after upper parts of the trees die. The bark may split ... More » Science Biology Botany

The outer layer of leaves is called the cuticle. The cuticle is a waxy coating that protects the leaf and prevents water loss. In some leaves, the cuticle may be visible due to its shine. More » Science Biology Botany

Neem leaves are used for treating conditions such as eye disorders, skin ulcers, heart disease, stomach upset, fever, leprosy, gum disease, respiratory conditions and liver problems. Neem leaves are also used for birth c... More » Science Biology Botany