The committee asked why Facebook needed to change WhatsApp's privacy terms and how it will impact users, a panel member told reporters on the condition of anonymity after the meeting.
"Members wanted to know the implications of the policy for Indian consumers," the panel member said, adding that WhatsApp has said it will submit written responses.
A WhatsApp spokeswoman said the company had provided its views and will continue to assist the committee in the future.
With 400 million users, India is WhatsApp's biggest market, and the messaging service has big plans for the country's growing digital payments space, including selling health insurance via partners.
Demand for rival applications such as Signal and Telegram surged on privacy concerns and WhatsApp last week decided to delay the new policy launch to May from February.
Facebook last year invested $5.7 billion in the digital unit of Mukesh Ambani-led conglomerate Reliance Industries, with a big part of that aimed at drawing in tens of millions of traditional shop owners to use digital payments via WhatsApp.
Parliament panel questions Facebook on WhatsApp's privacy terms