The Question is from neet-botany plant-kingdom , and it was created by the author Mr. NARESH KUMAR K

Question

The event that is precursor to seed habit is?

Mr. NARESH KUMAR K · Accepted Answer

## CORE INFORMATION
✓ **Answer**: C
## CONCEPT FRAMEWORK
**Primary Concept**: Evolution of Seed Habit
**Related Topics**: Plant Life Cycles, Gametophyte, Sporophyte, Embryo Development
**Prerequisites**: Basic knowledge of plant reproduction, alternation of generations, and seed development.
## SOLUTION PATHWAY
**Given Information**:
    The question asks for the precursor event to seed habit.
**Method & Steps**:
    1.  Understand Seed Habit: Seed habit represents a significant evolutionary step where the embryo develops within a protective structure (seed) from the female gametophyte.
    2.  Analyze Options:
        *   A. Formation of cones/strobili:  Cones are reproductive structures but not a direct precursor to seed development.
        *   B. Production of similar type of spores: Homospory, while common in earlier plants, is not the precursor to seed habit. Seed plants are heterosporous.
        *   C. Development of zygote into embryo within the female gametophyte: This is the key event. Retention and development of the embryo within the female gametophyte provides protection and nourishment, which is a crucial step towards seed formation.
        *   D. Dependence on water for sexual reproduction: This is a feature of more primitive plants and is not associated with the development of seed habit.
    3.  Identify Correct Option:  Option C is the direct precursor to the seed habit, where the zygote develops into an embryo retained within the female gametophyte.
## OPTION ANALYSIS
[A] :x: Formation of cones/strobili is a feature of some seed plants, but not a precursor to seed habit itself. They are related to reproduction but are not the first step towards the seed.
[B] :x: Production of similar type of spores (homospory) is a trait of earlier plants; seed plants are heterosporous (different types of spores), but not the precursor to the seed itself.
[C] ✓: Development of the zygote into an embryo within the female gametophyte allows for the protection and nourishment of the developing embryo. This is a fundamental step for seed evolution.
[D] :x: Dependence on water for sexual reproduction is a primitive trait. Seed plants are independent of water for fertilization.
## LEARNING AIDS
**Common Mistakes**:
    1. Confusing cones/strobili with the development of the seed itself. Cones are part of the reproductive process, but not the precursor to the seed habit.
    2.  Thinking homospory is related to seed habit, when seed plants are heterosporous.
**Quick Tips**:
    1.  Remember that the key feature of seed habit is the retention of the embryo within the female gametophyte.
    2.  Focus on the evolutionary progression: from water-dependent reproduction to the development of the seed.

Mr. NARESH KUMAR K · Answer

Formation of cones/strobili

Mr. NARESH KUMAR K · Answer

Production of similar type of spores

Mr. NARESH KUMAR K · Answer

The correct Option is "Development of zygote into embryo within the female gametophyte"

Mr. NARESH KUMAR K · Answer

Dependence on water for sexual reproduction

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