1. Jackfruit (Artocarpus heterophyllus)
2. Mahua (Madhuca indica)
3. Teak (Tectona grandis)

How many of the above are deciduous trees?
a. Only one
b. Only two
c. All three
d. None

Explanation :

b. Only two

Understanding Different Tree Types

Jackfruit (Artocarpus heterophyllus): Jackfruit is an evergreen tree, meaning it retains its leaves throughout the year and does not shed them seasonally. Therefore, it is not a deciduous tree.
Mahua (Madhuca indica): Mahua is a deciduous tree, meaning it sheds its leaves seasonally, usually during the dry season or winter months.
Teak (Tectona grandis): Teak is also a deciduous tree, shedding its leaves seasonally.

So, out of the three trees mentioned, two of them (Mahua and Teak) are deciduous trees.