Consider the following trees :

Correct Option

To determine which of the listed trees are deciduous, their foliage behavior needs to be examined:

• Jackfruit (Artocarpus heterophyllus): This is an evergreen tropical tree. It retains its leaves throughout the year, especially in its native moist tropical environments.
• Mahua (Madhuca indica): This is a tropical deciduous tree. It sheds its leaves seasonally, typically during the dry period, which is characteristic of tropical deciduous forests in India.
• Teak (Tectona grandis): This is a prominent tropical deciduous hardwood tree. It sheds its leaves in the dry season as a mechanism to conserve moisture and is widely found in monsoon-type climates.

Based on this, Mahua and Teak are deciduous trees, while Jackfruit is evergreen. Therefore, two of the listed trees are deciduous.

Incorrect Options

(a) Only one: This option is incorrect because both Mahua and Teak are deciduous trees, making the count two, not one.

(c) All three: This option is incorrect because Jackfruit (Artocarpus heterophyllus) is an evergreen tree, not deciduous.

(d) None: This option is incorrect because Mahua and Teak are indeed deciduous trees, meaning the count is not zero.