_______ tree is known as “flame of the forest”?

Zizyphus
Butea monosperma
Jackfruit
Pongamea

The correct answer is Butea monosperma.

Butea monosperma is a species of flowering plant in the pea family Fabaceae. It is native to the Indian subcontinent, Southeast Asia, and China. It is commonly known as the flame of the forest, peacock flower tree, or bastard teak.

The tree is deciduous and grows to a height of 10–15 m. The leaves are compound, with 3–5 leaflets. The flowers are large and showy, orange-red in color. They are produced in clusters at the ends of branches. The fruit is a legume, about 10 cm long.

The tree is an important source of timber and fuelwood. It is also used in traditional medicine. The flowers are a popular ornamental plant.

The other options are incorrect for the following reasons:

  • Zizyphus is a genus of about 60 species of shrubs and trees in the buckthorn family Rhamnaceae. They are native to Africa, Asia, and Australia.
  • Jackfruit is a species of tree in the mulberry family Moraceae. It is native to the Western Ghats of India and Sri Lanka.
  • Pongamia pinnata is a species of flowering plant in the pea family Fabaceae. It is native to tropical Asia.