No it's not necessary, it's ok to go without biology. All you need is need to be of science stream background. But yes biology is prefered and is must to join home science course. Because home science undergraduate course involves biology, physiology, anatomy, biochemistry all these subjects and your 12th percentage are also recorded while getting into admission for BSC in home science so that time biology marks are checked.

Refer to the link below for knowing the various top colleges to join for pursuing home science after 12th..

https://university.careers360.com/colleges/list-of-home-science-degree-colleges-in-india

Best wishes. Thank you.

It is not compulsory to have studied Biology but Science stream is preferred for some institutes where admission is done on the merit basis.

There are certain institutions where you will have to attend their Entrance exam.

10+2 or equivalent qualification from a recognized Board. Preferably Science as the stream of study Qualification of a relevant entrance test in the case of some institutes