Class 11 · Plant Kingdom

Pteridophyte Sporophyte Structure — NEET Biology

✅ Asked in NEET 2020
✅ NEET 2020 PYQ

Strobili or cones are found in:

QuestionNEET 2020

Strobili or cones are found in:

Answer & NCERT explanation

Correct answer: B Equisetum

Strobili (cones) are reproductive structures found in pteridophytes like Equisetum (horsetails). According to NCERT, strobili contain sporangia that produce spores. Marchantia is a liverwort with different reproductive structures, Salvinia and Pteris are ferns that don't have distinct strobili. Equisetum is unique among the options for having terminal strobili on fertile shoots.

Read more NCERT concept on the PYQ

📖 NCERT Source

You may recall that in bryophytes the dominant phase in the life cycle is the gametophytic plant body. However, in pteridophytes, the main plant body is a sporophyte which is differentiated into true root, stem and leaves. These organs possess well-differentiated vascular tissues. The leaves in pteridophyta are small (microphylls) as in Selaginella or large (macrophylls) as in ferns. The sporophytes bear sporangia that are subtended by leaf-like appendages called sporophylls. In some cases sporophylls may form distinct compact structures called strobili or cones (Selaginella, Equisetum). The sporangia produce spores by meiosis in spore mother cells. The spores germinate to give rise to inconspicuous, small but multicellular,

NCERT Biology · Class 11 · Chapter 3 · Paragraph 28
How NTA Uses This Concept

NTA tests whether students understand that pteridophytes have a dominant sporophytic plant body with true roots, stems, and leaves, unlike bryophytes where gametophyte is dominant. The key concept is that sporophylls (fertile leaves) can form specialized structures called strobili or cones, especially in Selaginella and Equisetum. Students often confuse sporophylls with regular leaves or forget that strobili are compact reproductive structures. Remember: sporophylls are specialized leaves bearing sporangia, and when clustered together, they create the cone-like strobilus structure. This distinction between vegetative and reproductive leaf modifications is crucial for understanding pteridophyte reproduction and anatomy.

❓ Frequently Asked Questions
What does NCERT say about You may recall that?
You may recall that in bryophytes the dominant phase in the life cycle is the gametophytic plant body. However, in pteridophytes, the main plant body is a sporophyte which is differentiated into true root, stem and leaves.
Has this concept appeared in NEET?
Yes — appeared in NEET 2020. Mentions sporophylls form strobili or cones in Selaginella, Equisetum
Which chapter is this from?
Plant Kingdom, Class 11 NCERT Biology.

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