Tag: classification of bryophytes

Anthoceros is a hornwort, Adiantum is known as the walking fern, Sargassum is a brown alga, the prothallus is the gametophyte of pteridophytes, and Asterales belongs to the group Inferae. This matches the combination in option C.

Sphagnum belongs to the class Bryopsida of the division Bryophyta, which comprises the true mosses.

Anthoceros belongs to the class Anthocerotopsida (hornworts), not Bryopsida (which contains true mosses like Funaria and Sphagnum). Therefore, Bryopsida - Anthoceros is the incorrect pair.

Riccia is a bryophyte, a group in which the dominant, independent phase of the life cycle is the gametophyte, which produces haploid gametes. In Lycopodium, Equisetum, and Pinus, the dominant plant body is the sporophyte.

Pteris is a pteridophyte (fern), whereas Pellia, Porella, and Funaria are all bryophytes.

Gemmae are specialized, multicellular, green, asexual buds produced in small receptacles called gemma cups on the thallus of liverworts like Marchantia.

The leaf-like structures of moss gametophytes are photosynthetic and contain chloroplasts, but they lack true stomata. Stomata are present on the sporophyte capsule rather than the gametophytic leaves.

Polytrichum is a bryophyte (moss) which exhibits a dominant, independent gametophytic phase alternated by a multicellular sporophyte that is physically dependent on the gametophyte.

In Hepaticopsida (liverworts like Marchantia and Riccia), the rhizoids are unicellular and are of two distinct types: smooth-walled and tuberculate (pegged).

In several liverworts like Marchantia, elaters are hygroscopic, diploid, sterile cells found inside the capsule that help in spore dispersal by twisting and untwisting in response to moisture changes.