Question

Plant body is thalloid in
A. Salvinia
B. Marchantia
C. Funaria
D. Sphagnum

Answer 1

Hint: Plant body which is not classified into stem and leaves and lacks true roots and a vascular system is called a thallus. An organism containing a thallus is called a thalloid. There are several names for thalloid such as thallodal, thalli form, thalline, or those. In which there is no organization of the tissues into organs and thallus usually names the entire body of a multicellular non-moving organism.

Complete answer:
Salvinia: Salvinia has another name called water moss. Salvinia, a genus in the family Salviniaceae. It was like a floating fern named in honour of Anton Maria Salvini in a 17th-century period by an Italian scientist
Hence, option (A) is not correct.

Marchantia: In a group of liverworts, Marchantia is a genus in the family Marchantiaceae of the order Marchantiales. The Marchantia shows differentiation into two layers. With a well-defined upper epidermis, one is an upper photosynthetic layer, with pores and a lower storage layer. Marchantia is commonly found in moist places or silty places. Marchantia reproduces both sexual and asexual reproduction.
Hence, option (B) is the correct answer.

Funaria: In the life cycle of Funaria there will be two distinct individuals occur. One of these is haploid where it is the independent leafy plant.
Hence, option (C) is also not correct.

Sphagnum: Genus of approximately 380 accepted species of mosses is called Sphagnum.
Hence, the option (D) is also not correct.

Hence, the correct answer is option (B).

Note: The name thallus is a botanical term that refers to the body of a plant. This indicates a plant that does not have leaves, stems, and roots. Historically, in botany, we can apply this term to algae, fungi, and also the various divisions of bryophytes. As we already know, the organism or structure resembling a thallus is called a Thalloid. By unicellular and unbranched rhizoids, the plant body of a liverwort is haploid (n), gametophytic, small, dorsoventrally flattened, those dichotomously branched fixed.