Explanation:

• Baobabs are deciduous trees ranging in height from 5 to 20 meters. Deciduous forest is a vegetation composed primarily of broad-leaved trees that shed all their leaves during one season.
• The African baobab (Adansonia digitata) is one of the nine species of baobab and is native to mainland Africa. They are also found in African Savannah here the ecosystem is a tropical grassland with warm temperatures year-round and with its highest seasonal rainfall in the summer.
• It is characterized by grasses and small or dispersed trees that do not form a closed canopy, allowing sunlight to reach the ground.
• Carbon-14 dating places the age of a specimen of African baobab in Namibia at about 1,275 years which is the oldest Known Angiosperm Tree.
• They grow in low-lying areas of Africa and Australia. They are not naturally endemic to India. 

Hence only statements 1&2 are correct.