Membership in section 8 companies

Yes, under the Companies Act, 2013, a Partnership firm or an LLP can become the member of Section 8 Company. The provisions of respective Acts need to be complied with by the partnership firm or LLP as the case may be.

https://www.icsi.edu/media/webmodules/publications/FAQs_on_Section_8_Companies.pdf

Can shareholder of section 8 company be a director of the same?
Yes, there is no specific prohibition on such appointment as director.
 

Can a Section 8 Company be amalgamated with a company which is not a Section 8 Company?
No. Section 8(10) provides that a company registered under section 8 shall amalgamate only with another company registered under section 8 company and having similar objects.
In view of section 8(10), Section 8 Company cannot be amalgamated with a company which is not a Section 8 company.