Biswanath College, established in the year 1960 started with the Arts faculty only. At an increasing public demand the Science faculty came into existence with the subjects. Physics, Chemistry, Mathematics and Biology in the year 1970. Up to 1975 the science stream was confined to Pre-University level only. From the session 1976-77 the two years B.Sc. course was started. Biology, which was a single department viz. Botany and Zoology. Dr. C. Bhagawati, the founder of the Biology department was appointed the Head of the Department of Botany and he is still heading the department successfully.

In 1982 honours course in Botany was started alongwith the Chemistry, G.U. started the Three years Degree Course from 1984 and the Honours course was renamed as major. Two batches in honours and 17 batches in major courses have so far completed their Degree Courses upto 2003. Altogether 26 batches have been awarded the B.Sc. Degree with Botany.

• Dr. Chidananda Bhagawati, M.Sc., Ph.D. (1970- ) Head of the department
• Ratun Sarmah, M.Sc. (1976- )
• Dr. Pradip Kumar Mahanta, M.Sc., M.Phil., Ph.D. (1976- )
• Meera Mudoi Bora, M.Sc., M.Phil. (1982- )
• Kulendra Chandra Sarmah, M.Sc. (1982- )
• Amarjyoti Borthakur, M.Sc., LL.B. (1983- )
• Balindra Boruah, M.Sc. (1987- )

• Tikaram Chetry
• Rabi Bhuyan
• Dimbeswar Bora

Botany department is the only department in the college where all the teaching and laboratory staff are servicing against sanctioned post.

Mission, vision and goal of the Botany department:

• Introducing Biotechnology as vocational subject by the year 2005
• Conserving the threatened and endangered plant species by establishing a Botanical Garden in the college campus, building awareness among the people for bio-diversity conservation by organizing popular talks, exhibitions public-hearings, quiz competitions, etc.
• Launching self employment generating programmes, such as training on mushroom cultivation, establishing medicinal plant garden and plantation of valuable timber yielding plant all over the college campus.

• Holding both theory and practical classes regularly for the students having botany as major or general subject in degree course.
• Conducting regular class tests on theory and practical
• Organizing seminars and popular talks on various subjects related to Biology.
• Arranging excursions, local field study and visit to some famous laboratories like DRL, RRL, Orchid Research Station, Tipi (A.P.) etc.

• Freshmen social and Farewell meetings are regularly held in the department with active participation of the students and teachers.
• Picnic cum specimen collection programmes are organized every year jointly by the students and the teachers of the departments.
• All the teachers and the students take active part in various programmes organized by the Botany club and local branch of Assam Science Society.

• The departmental library was established in the year 1981 with a view to helping the students of Major course. Now the library has about 80 books which are regularly utilized by the teacher and students.
• The ‘Botany club’ has been regularly organizing programmes such as plantation of medicinal plants as well as timber yielding plant and cleaning of the college campus.
• The Biswanath Chariali branch of Assam Science Society was established in the year 1969. Dr. C. Bhagawati is the founder Secretary of this branch who is at present the president of the same branch. A.J. Borthakur is actively associated with almost all activities of the Students’ Union and has been Prof-in-charge of various portfolios consecutively for the last 20 years. Being life members of the Assam Science Society, the teachers of the department take active part in various programmes which are aimed at popularizing science among the students and general public. The teachers are also associated with many NGO’s and other socio cultural organizations like Assam Science Writers Association, Abhiyatri, Prastuti etc.
• The department was started cultivation of sugarcane in association with a private party which will enable the authority to earn some money. Moreover, the department is making the project for cultivation of Citronella, Mushrom cultivation, Vermicompost three oil yielding plants which are commercially becoming very much essential in and out side of the state.