The Question is from neet-zoology , and it was created by the author T HARITHA

Question

Fertilization in humans is practically possible only if:

T HARITHA · Accepted Answer

## CORE INFORMATION
✓ **Answer**: B
## CONCEPT FRAMEWORK
**Primary Concept**: Human Fertilization
**Related Topics**: Gamete Transport, Female Reproductive System, Sperm Capacitation
**Prerequisites**: Basic understanding of human reproductive anatomy and physiology, specifically the process of fertilization.
## SOLUTION PATHWAY
**Given Information**:
*   The question asks about the necessary conditions for successful fertilization in humans.
*   The correct answer is provided as 'The ovum and sperms are transported simultaneously to ampullary – isthmic junction of the fallopian tube'.
**Method & Steps**:
1.  **Understanding Fertilization Location:** Fertilization in humans primarily occurs in the ampullary-isthmic junction of the fallopian tube.
    *Reasoning:* This is where the ovum is most likely to encounter sperm.
2.  **Timing Consideration:** The ovum is viable for a short time after ovulation, and sperm need to be present in the female reproductive tract at the right time to achieve fertilization. Hence, the simultaneous transport to the location is essential.
    *Reasoning:* The ovum is only available for a short time after ovulation. Sperm must be present to fertilize it.
3.  **Analyzing Options:**
    *Option A:* Incorrect because sperm needs to travel further up the reproductive tract and the timing is not specific.
    *Option C:* Incorrect because fertilization does not occur in the cervix.
    *Option D:* Incorrect because fertilization happens in the fallopian tube, not the uterus.
**Final step**:
    *Result:* Option B correctly states that the simultaneous transport to the ampullary-isthmic junction is necessary for fertilization.
    *Verification:* This option aligns with biological understanding of human fertilization.
## OPTION ANALYSIS
[A] :x: Incorrect: The timing and location are not precise for successful fertilization.
[B] ✓: Correct: This is the precise location and timing required for fertilization.
[C] :x: Incorrect: Fertilization doesn't occur in the cervix.
[D] :x: Incorrect: The uterus is not the site of fertilization; also, the timing is not specific.
## LEARNING AIDS
**Common Mistakes**:
1.  *Error 1*: Confusing the location of fertilization with other parts of the female reproductive system. *How to avoid*: Memorize the location as the ampullary-isthmic junction of the fallopian tube.
2.  *Error 2*: Misunderstanding the timing requirements for fertilization. *How to avoid*: Understand the relatively short viability of the ovum and need for sperm to be present.
**Quick Tips**:
1. *Helpful shortcut*: Remember the ampulla-isthmus junction as the meeting point for sperm and egg.
2. *Memory aid*: Think of the fallopian tube as the 'highway' for gametes and the junction as the 'meeting point'.

T HARITHA · Answer

The sperms are transported into vagina just after the release of ovum in fallopian tube

T HARITHA · Answer

The correct Option is "The ovum and sperms are transported simultaneously to ampullary &ndash; isthmic junction of the fallopian tube"

T HARITHA · Answer

The ovum and sperms are transported simultaneously to ampullary &ndash; isthmic junction of the cervix

T HARITHA · Answer

The sperms are transported into cervix within 48 hrs. of release of ovum in uterus

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