Question

An insectivorous plant having a glandular structure on its leaf secreting sticky fluid is
A. Aldrovanda
B. Pitcher plant
C. Sundew plant
D. Venus flytrap

Answer 1

There are various plants like halophytes, mesophytes also all green plants are photosynthetic. However, there are some plants that are insectivorous which feed on insects.

Complete answer: There are plants which are insectivorous or carnivorous.
-Aldrovanda: The genus Aldrovanda belongs to the family Droseraceae. It traps small aquatic invertebrates, as it is an aquatic plant, and feeds on them. Thus, it is an insectivorous plant. The trap of Aldrovanda is similar to that of the Venus flytrap. The leaves are modified to form a cage.
-Pitcher plant: The genus Nepenthes belongs to the family Nepenthaceae. It traps flies and insects. Hence, it is an insectivorous plant. The pitcher plant has a leaf modified to form a pitcher like structure and the lid for the pitcher. As soon as an insect enters inside, the lid closes thus trapping the insect.
-Sundew plant: The genus Drosera belongs to the family Droseraceae. It traps insects. Thus, it is an insectivorous plant. The Sundew plant has stalked mucilaginous glands covering their leaf surfaces. These glistening drops of the mucilage at the tip of the glandular trichomes resemble the drops of morning dew, and hence, this plant is named the Sundew plant.
-Venus flytrap: The genus Dionaea belongs to the family Droseraceae. It traps arachnids and flies, hence, the name. Thus, it is an insectivorous plant. The terminal portions of the leaves are modified to form a cage. Thus, the Sundew plant has a glandular structure on its leaf secreting sticky fluid.
Hence, the correct answer is option (C).

Note: The carnivorous plants are those plants that trap living organisms, preferably the organisms of the Kingdom Animalia, and feed upon them. This is because these plants are nitrogen-deficient. They grow in the swampy areas where the soil has very poor nitrogen content in it. Hence, to make up for their nitrogen deficit, they feed on insects.