Consider the following trees:1.Jackfruit (Artocarpus heterophyllus)2.Mahua (Madhuca indica)3.Teak (Tectona grandis)How many of the above are deciduous trees?

1. A

   Only one

   Only one. Mahua and teak are both deciduous.

2. B

   Only two

   Only two. Mahua and teak shed leaves in the dry season. Jackfruit is evergreen.

3. C

   All three

   All three. Jackfruit (Artocarpus heterophyllus) is evergreen.

4. D

   None

   None. Two of the three are deciduous.

Summary. Official key is (b) only two. Teak (Tectona grandis) and mahua (Madhuca indica) are deciduous. Jackfruit is an evergreen tropical tree, so it is not counted.