Question

A dicot in which stem has scattered vascular bundles
A. Helianthus
B. Peperomia
C. Yuca
D. Dolichos

Answer 1

Hint: Most of these plants are compact, small perennial epiphytes that grow on rotten woods. These species generally have thick, stout stems and fleshy leaves, sometimes with epidermal windows.

Complete answer: Peperomia is a herbaceous plant which is commonly found in South American and Asian countries. Cork cambium is present in the stem, and their nodes are penta-lacunar and multilacunar. Their primary vascular tissue is disposed of like in monocots consisting of scattered vascular-bundles. They have two or more ring-like bundles. The internal phloem is absent and medullary bundles are present. They have a discontinuous vascular system which consists of scattered vascular bundles. This type of vascular bundle is commonly found in monocots and is known as atactostele. It is a type of eustele, that consists of many vascular bundles in a type of complex arrangement. It is a type of stele found in stems. It shows considerable structural diversity in leaves and especially stems. Peperomia belongs to the family Piperaceae. They are compact perennial epiphytes and are commonly found in tropical and sub-tropical regions. They have thick and stout stems. They have fleshy leaves with epidermal windows.
Hence, the correct answer is option B.

Note: They are also known as radiator plants. Helianthus is a dicot plant with the rings in the vascular bundles and its stele is known as eustele. Yuca is a monocot plant and the vascular bundles are scattered and its stele is known as atactostele. Dolichos is a dicot plant with the rings in the vascular bundles and the stele is known as eustele.