Module: | Embryo, Seed, Fruit & Apomixis
Q86: Consider the following statements regarding agamospermy and vegetative propagation:
1. Agamospermy is a specific category of apomixis where viable seeds are produced entirely without the fusion of male and female gametes.
2. Because agamospermy utilizes seeds, it grants the plant the distinct evolutionary advantage of wide geographical dispersal, unlike most vegetative propagation.
3. The embryos produced via agamospermy possess highly recombinant, unique genotypes due to the crossing over events during megasporogenesis.
Which of the above statements is/are correct?
2. Because agamospermy utilizes seeds, it grants the plant the distinct evolutionary advantage of wide geographical dispersal, unlike most vegetative propagation.
3. The embryos produced via agamospermy possess highly recombinant, unique genotypes due to the crossing over events during megasporogenesis.
Which of the above statements is/are correct?
✅ Correct Answer: A
The correct option is A. Statements 1 and 2 are correct, but Statement 3 is a fundamental contradiction.
Reproduction in plants falls into sexual and asexual categories.
Vegetative propagation (using runners, tubers, cuttings) is asexual but usually restricts the offspring to the immediate physical vicinity of the parent.
Agamospermy is a highly advanced evolutionary hack: it is asexual reproduction that structurally hijacks the sexual apparatus.
The plant produces seeds without fertilization (syngamy). Causally, this allows the plant to pack its clones into protective seed coats, utilizing wind or animals for massive geographical dispersal, an advantage standard vegetative propagation lacks.
Statement 3 is entirely false.
By definition, agamospermy bypasses meiosis and fertilization entirely.
Therefore, there is zero crossing over and zero genetic recombination.
Every single seed produced is an obligate genetic clone of the maternal plant.
Reproduction in plants falls into sexual and asexual categories.
Vegetative propagation (using runners, tubers, cuttings) is asexual but usually restricts the offspring to the immediate physical vicinity of the parent.
Agamospermy is a highly advanced evolutionary hack: it is asexual reproduction that structurally hijacks the sexual apparatus.
The plant produces seeds without fertilization (syngamy). Causally, this allows the plant to pack its clones into protective seed coats, utilizing wind or animals for massive geographical dispersal, an advantage standard vegetative propagation lacks.
Statement 3 is entirely false.
By definition, agamospermy bypasses meiosis and fertilization entirely.
Therefore, there is zero crossing over and zero genetic recombination.
Every single seed produced is an obligate genetic clone of the maternal plant.