The plant body of moss (Funaria) is
Correct answer: B. Predominantly gametophyte with sporophyte
- A. Completely sporophyte
- B. Predominantly gametophyte with sporophyte
- C. Completely gametophyte
- D. Predominantly sporophyte with gametophyte
Explanation
b. Funaria is known as common moss or green moss. The plant body is foliose that consists of stem axis which bears many leaves and instead of roots, rhizoids are present. It is gametophytic (n) and independent. It bears antheridia and archegonia on the same plant but on different branches. After fertilization, the zygote (2n) divides to form the sporophyte which consists of foot, seta, and capsule. The basal foot is embedded in the apex of female branch. It absorbs nutrients and provides support for the sporophyte. Inside the capsule, haploid spores are produced as a result of meiosis. Thus again the gametophytic phase starts. So the gametophytic phase is the dominant phase of the life cycle of Funaria. Hence,The correct answer is: Predominantly gametophyte with sporophyte. Funaria, a moss, has a predominantly gametophyte-dominant life cycle with a small sporophyte. The gametophyte is the dominant, photosynthetic phase of the moss life cycle. Other options are explained below: a. Completely sporophyte: This is not accurate for mosses like Funaria. While the sporophyte stage is present in the life cycle, it is not the dominant or persistent phase. c. Completely gametophyte: This is not accurate either. While the gametophyte is the dominant phase, there is also a sporophyte stage in the life cycle. d. Predominantly sporophyte with gametophyte: This is not accurate for mosses. The sporophyte is not the predominant phase, but rather a smaller and dependent structure in the life cycle.
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