Science

Botany has immense career potential in areas such as biotechnology, genetics, horticulture, floriculture, plant sciences, environmental sciences, forestry, agriculture, etc. Teaching, Government Service and Research can yield some good openings in this area.
Botany can lead to a career in genetics (which is the modern experimental study of the laws of inheritance and genes), or biotechnology (a research oriented field for application in various areas such as medicine, pharmaceuticals, agriculture, and environment). Botany is an inter-disciplinary science covering not only biology but also other subjects like physics, chemistry, mathematics and engineering. It is one of the fastest growing fields as it is used in every aspect of industrial and daily life.
Botany can also help in making a career in horticulture or floriculture. Horticulture has grown from a kitchen garden kind of activity into a much organised sector. There is increasing demand for fresh and hygienically grown and packed fruit and vegetables. Indigenously rare items like asparagus and celery are being commercially cultivated and new varieties like baby corn have being developed.
On the other hand, Floriculture includes cultivation of flowers, flowering and ornamental plants for the market and also the setting up of nurseries for a variety of plants such as ornamental trees, shrubs, bushes, fruit trees, and other plants. There is great demand both nationally and internationally for rare and exotic flowers because of the current say it with flowers trend. This also paves way for a very lucrative business.
The study of environmental science can also be taken up after a degree in Botany. This is a broad term incorporating various different areas. As a discipline, it is a composite of both the natural and social sciences, its roots being in natural history and the science of ecology. Opportunities in this field are immense for environmental scientists, environmental biologists, environmental modellers, as well as environmental journalists. In the present scenario, when the environment faces great danger from pollutants of different types, professionals in this area are in great demand.
You can also get into forestry after studying botany. In the government sector, one can join the Indian Forest Service which plays an important role in the supervision and management of forests. Botany can be taken as paper for the entrance exam for this service.

The most popular and common jobs available are the scientists positions in DRDO, BARC and ISRO, and many other labs like IPR. For DRDO and BARC you have to apply for GATE or BARC written exam. Sometimes DRDO makes direct recruitments for its particular labs but they are not very regular with that. Another option available for you is to qualify NET JRF and then apply for assistant professor in some state colleges or colleges affiliated to universities.
Also, you may apply for private universities as the pay scale is almost the same for recognised universities. Less preferable option is to start teaching in some coaching centers of IIT-JEE or PMT, while they pay huge amount but personally I don't like this option. One of the best options is to prepare for geophysicists exam organised by UPSC.
Also, there are irregular vacancies advertised by state public commission for various scientific posts in forensic labs and all but they might require you some lab work experience in the particular field. One more option is to apply for scientific assistant posts in various autonomous institutes like IISERs and others.