Question

Multicellular branched rhizoids and leafy gametophytes are the characteristics of

• A. some bryophytes
• B. pteridophytes
• C. all bryophytes
• D. gymnosperms.

Answer 1

The Correct Option is A

The question is about identifying the group of plants characterized by multicellular branched rhizoids and leafy gametophytes. To solve this, let's explore the characteristics of the given plant groups:

• Bryophytes: Bryophytes are non-vascular plants that include mosses, liverworts, and hornworts. They are characterized by having a dominant gametophytic stage, which is leafy in some but not all bryophytes. Mosses, for example, have leafy gametophytes and multicellular rhizoids, which are root-like structures that anchor the plant. However, not all bryophytes exhibit these characteristics, as liverworts often have thalloid gametophytes.
• Pteridophytes: These are vascular plants (such as ferns) that also have rhizoids, but their dominant life stage is the sporophyte rather than the gametophyte. They generally lack leafy gametophytes, which means this option is incorrect for the given characteristics.
• Gymnosperms: These are seed-producing plants like pine trees, which have well-developed roots instead of rhizoids and exhibit sporophyte dominance. Thus, they do not have leafy gametophytes like some bryophytes.

Given the explanation above, the correct answer is 'some bryophytes' because among bryophytes, certain groups like mosses are known to have multicellular branched rhizoids and leafy gametophytes, fitting the description in the question.

Therefore, the correct answer is:

• Some Bryophytes