The function of leaves is to help the plant produce food by converting the energy in sunlight into chemical energy that the plant can eat. The structures within the leaf convert the energy and make it possible for the plant to get food.Know More
Chlorophyll is the molecule in the structure of the leaves that takes the energy in sunlight to turn water and carbon dioxide gas into sugar and oxygen gas. This conversion process is known as photosynthesis.
Leaves are made out of several layers that are in between two layers of super tough skin cells called epidermis. The epidermis is also known to secrete cuticle, which is a waxy substance. All of these layers protect the leaf from pests such as insects and bacteria. There are also stomata cells that are pores where gases can enter and exit through the leaf.
Most of the food production in the leaf actually takes place in the elongated cells that are known as palisade mesophyll inside the leaf. The leaf also has veins that can help to support the leaf by transporting food, water and minerals to the leaf and to the plant.
Leaves are also important for humans as they are one of the best ways to identify various plants. Leaves come in many shapes and sizes, such as flat, wide, spiky, thin, rectangular and oval.Learn more about Botany
Photosynthesis, the process by which plants convert the sun's energy to glucose, takes place during daylight hours when the plant's leaves are exposed to sunlight. This process only occurs in green plants and in some protist species. Carbon dioxide and water must also be present in order for photosynthesis to occur.Full Answer >
Plants can survive without sunlight as long as they have another source of light in the appropriate spectrum, such as an artificial grow light. Plants can only survive in complete darkness for a finite period of time. Generally, plants that are in vegetative phases thrive on blue lights, while plants in flowering phases thrive on red and orange lights.Full Answer >
Guava leaves are ingested in pill or tea form as a weight loss aid, to lower blood glucose levels in diabetics, to lower cholesterol, to treat diarrhea, to help treat dengue fever, to reduce allergies, to increase sperm production and to treat infection and wounds. In addition, guava leaves have been used topically to treat black spots and acne, to remove blackheads, as an anti-aging concoction and to relieve itchiness.Full Answer >
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 present. Additional evidence can present itself as sticky excrement on leaves, brown or black leaves, discolored roots and yellow rings or spots on tomatoes.Full Answer >