Question

Pteridophytes differ from mosses/bryophytes in possessing

• A. independent gametophyte
• B. well developed vascular system
• C. archegonia
• D. flagellate spermatozoids.

Answer 1

The Correct Option is B

Pteridophytes and mosses (bryophytes) are both groups of plants that share some similarities, such as reproducing via spores and not producing seeds, but they have distinct differences as well. The key difference highlighted in this question is the presence of a "well developed vascular system" in pteridophytes.

Let's examine the options:

1. Independent Gametophyte: Both pteridophytes and bryophytes can have an independent gametophyte stage. However, this is not a distinguishing feature as asked in the question.
2. Well Developed Vascular System: This option highlights the main difference between pteridophytes and bryophytes. Pteridophytes possess a well-developed vascular system composed of xylem and phloem, which allows efficient transportation of water and nutrients throughout the plant body. Bryophytes, on the other hand, lack a true vascular system, which limits their size and distribution.
3. Archegonia: Both groups have archegonia, which are female reproductive structures. This feature is not exclusive to either of the groups.
4. Flagellate Spermatozoids: Both pteridophytes and bryophytes have flagellate spermatozoids that require a film of water for fertilization. Thus, this is not a distinguishing characteristic.

Thus, the correct answer is well developed vascular system. This characteristic enables pteridophytes to grow larger and inhabit a wider range of environments compared to bryophytes.