Question

Photosynthetic roots are recorded in-
a. Jussiaea
b. Rhizophora
c. Bryophyllum
d. Tinospora

Answer 1

Hint: A large range of plants contain several different kinds of aerial roots. Assimilatory roots are the roots rising above the ground, green and photosynthesizing. As ivies and creeper plants illustrate, they can encourage climbing and various forms of support.

Complete answer:
Option A is incorrect. Jussiaea, also known as the water primrose, is a flowering plant species in the nocturnal primrose family. This plant is a perennial floating herb with white spongy boys and can float on the surface of the water (store air, get inflated and spongy, build above water level, make the plant light and act as floating roots) as well as float over the surface of the wetlands. It is now a popular rice paddy weed in Asia, and also occurs in Australia and Africa.
Option B is incorrect. Rhizophora is a genus of tropical mangrove trees, also called true mangroves in group. Rote mangrove (Rhizophora mangle) is the most notable species. Usually they live in intertidal areas that are inundated by the ocean every day. They show a variety of adaptations to this environment, including pneumatophores that elevate plants above water and allow them to breathe oxygen even if their lower roots are swamped, and a cytological molecular "pump" process enables them to remove excess salts from their cells.
Option C is incorrect. Bryophyllum is a group of plant species of the Crassulaceae family which is generally included as a portion of the Kalanchoe genus. The community is notable for growing small plantlets vegetatively on the margins and tips of phylloclades. In desirable locations, the plantlets fall off phylloclades and can root and develop into new plants. The plantlets emerge from the mitosis in phylloclades of meristematic-type tissue.
Option D is correct. Modified adventitious roots which turn green and execute photosynthesis are called assimilatory roots. Tinospora possesses thin, slender, aerial photosynthetic roots that ascend. Tinospora species are the herbaceous vine of the Menispermaceae family, native to the tropical regions of the Indian subcontinent, is known by the common names of heart-leaved moonseed, guduchi and giloy.

So, the correct answer is Option d) Tinospora.

Note: Photosynthetic roots are green, aerial, adventitious roots also called assimilatory roots which prepare food materials by photosynthesis. They can be seen in the roots of Taeniophyllum, Trapa and Tinospora.