Biology · Plant Kingdom · NEET
| Seed / ovule | Naked — ovule not enclosed by an ovary wall | Enclosed — ovule inside the ovary, seed inside a fruit |
| Flowers & fruits | Absent; bear cones (strobili) | Present; true flowers and true fruits |
| Fertilisation | Single fertilisation | Double fertilisation (with triple fusion) |
| Endosperm ploidy | Haploid (n), forms before fertilisation | Triploid (3n), forms after fertilisation |
| Xylem vessels | Usually absent (Gnetum is an exception) | Usually present |
| Examples | Pinus, Cycas, Ginkgo, Sequoia | Salvia, mango, wheat, mustard |
The seed. In gymnosperms the ovule is not enclosed by an ovary wall, so the seed is naked (exposed). In angiosperms the ovule is enclosed inside the ovary, so after fertilisation the seed is enclosed inside a fruit. This single point — naked seed vs enclosed seed — is the reason NEET keeps testing this concept, and it is why the two groups are classified separately.
The word gymnosperm comes from Greek: 'gymnos' means naked and 'sperma' means seed. In these plants the ovule sits openly on a scale or a megasporophyll of a cone. There is no ovary wrapping around it, so when the seed forms it is not covered by any fruit. In angiosperms ('angio' = covered) the ovule is inside the ovary, so the seed ends up covered inside a fruit.
No. Gymnosperms do NOT have true flowers or fruits. They bear cones (also called strobili) — male cones carry pollen and female cones carry ovules. Because the ovule is not inside an ovary, no fruit can form. Only angiosperms (flowering plants) have real flowers and true fruits. This is a very common NEET trap option.
Both are seed plants (spermatophytes), so they share the seed habit. But classification looks at more than just 'has a seed'. Gymnosperms have naked seeds, no vessels in xylem (usually), no flowers/fruits, and no double fertilisation. Angiosperms have enclosed seeds inside fruits, vessels in the xylem, true flowers, and double fertilisation forming a triploid endosperm. These are big structural and reproductive differences, so they get separate groups.
Double fertilisation and the triple fusion that makes the triploid (3n) endosperm happen ONLY in angiosperms. Gymnosperms have single fertilisation and their food tissue (endosperm) is haploid (n), formed before fertilisation from the female gametophyte. NEET often checks whether you know the endosperm ploidy differs (n in gymnosperms, 3n in angiosperms).
In many gymnosperms (like Pinus) pollen is carried by air currents (wind) directly to the ovule, and a proper pollen tube reaching the egg is not the main mode — the male gametes are delivered near the archegonia. In angiosperms, after pollination lands on the stigma, a pollen tube always grows down the style to carry the male gametes to the egg. This difference has appeared as an assertion-reason question in NEET.
Which one of the following is the characteristic feature of gymnosperms?
Which of the following statements is correct?
Statement I: In gymnosperms, the male and female gametophytes remain within the sporangia. Statement II: In gymnosperms, seeds are not covered. Choose the most appropriate answer:
Try the real previous-year questions from this chapter — each with the answer and a full solution.
Yes. Both produce seeds and are called spermatophytes (seed plants). The difference is that gymnosperm seeds are naked, while angiosperm seeds are enclosed inside a fruit.
In gymnosperms the endosperm is haploid (n) and forms before fertilisation from the female gametophyte. In angiosperms the endosperm is triploid (3n), formed after double fertilisation by triple fusion. NEET often tests this exact difference.
Gymnosperm examples: Pinus, Cycas, Ginkgo, Sequoia. Angiosperm examples: Salvia, mango, wheat, mustard. In NEET matching questions, Ginkgo is placed under gymnosperms and Salvia under angiosperms.
Angiosperms typically have vessels in their xylem, which makes water transport more efficient. Most gymnosperms lack vessels (Gnetum is a special exception). This is one more feature used to classify them separately.
It is the single most repeated idea from this topic. Questions ask you to pick the 'characteristic feature of gymnosperms' or spot a wrong statement, and the answer almost always turns on naked seeds, no fruits, and no flowers. Getting this one point right protects you across many years of PYQs.
