When the mother strokes the infant's lips and the baby starts sucking, this is a nervous system reflex known as the: Life Span Development When the mother strokes the infant's lips and the baby starts sucking, this is a nervous system reflex known as the: A. Moro reflex B. Sucking reflex C. Palmar reflex D. Rooting reflex Answer: B Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+