The jacaranda is a tree originally from Mexico. It is deciduous, and is covered in purple flowers in spring. They survive well in areas with long, hot summers. Jacarandas are frost sensitive when they are young, but frost hardy when they are older.
Jack Russells are small dogs that are mainly white, with patches of brown or black. They might have smooth or rough coats. They were originally bred for hunting foxes. They are intelligent, energetic, fearless and vocal. If they are left alone or not exercised enough, they can get bored and destructive. They do not make good indoor dogs.
A jackal is a small to medium sized close relative of the dog. They are found in Africa, Asia and some parts of Europe. Jackals normally live together in pairs, although they will sometimes form small packs to hunt. They hunt small to medium animals, and will eat dead animals they find. Like household dogs they will also eat fruit and other plants as well as meat.
Jade is a green, ornamental stone that has been used to carve decorative items from for thousands of years. It is particularly popular among Chinese artisans.
Jade is largely made up of iron, calcium and magnesium. The more iron, the brighter the shade of green.
A jar is a small container with a lid you can keep things in. Today most jars are made of glass or plastic with a metal or plastic screw-top lid. A long time ago jars used to be made from ceramic or glass, and had lids made out of cork, rubber, cloth tied with string, or glass held on with metal clips and a rubber seal.
Jasmine is a group of shrubs and climbing plants, many of which have strongly scented flowers. They are a popular ornamental garden plant. The flowers smell strongest at night. The jasmine most people are familiar with is common jasmine, which is a climbing variety.
Jasper is an opaque silicate that can be virtually any color. It is often used for making jewelry. Some colours are more valuable than others - the jasper in the picture is red jasper.