Answer:
a. leaves that close when touched.
Step-by-step explanation:
Venus flytrap is an insectivorous plant. Its scientific name is Dionaea muscipula. It has a specialised system by which it traps and kills insects. Venus flytrap is an autotroph (makes its own food through photosynthesis), but it absorbs nitrogen and phosphorous from insects because the soil in which it grows lack these elements. It has steel-trap shaped leaves which secrete sweet-smelling nectar and when insects land on its leaves for the nectar insects get trapped.