As part of her homework, Arushi wrote these similarities between the reproductive systems of humans and hens. Which of the above statements of Arushi is incorrect?
Similarity 1: Both reproductive systems fertilize eggs internally and deliver babies
Similarity 2: In both reproductive systems, a zygote is formed through the fusion of an egg and a sperm.
Similarity 3: In both reproductive systems, fertilization takes place in the oviduct.
Similarity 4: Both reproductive systems have ovaries, oviducts and a uterus.

Options

A. Statement 1
B. Statement 2
C. Statement 3
D. Statement 4

Answer

To determine which of Arushi's statements about the similarities between the reproductive systems of humans and hens is incorrect, let's analyze each statement step by step.

**Step 1: Analyze Similarity 1**
- Arushi states: "Both reproductive systems fertilize eggs internally and deliver babies."
- **Analysis**: Humans have internal fertilization and give birth to live young (babies). Hens, on the other hand, also have internal fertilization but they lay eggs (oviparous). Therefore, they do not deliver babies; they lay eggs that hatch into chicks.
- **Conclusion**: This statement is incorrect.

**Step 2: Analyze Similarity 2**
- Arushi states: "In both reproductive systems, a zygote is formed through the fusion of an egg and a sperm."
- **Analysis**: This is true for both humans and hens. In both cases, fertilization occurs when the sperm and egg unite to form a zygote.
- **Conclusion**: This statement is correct.

**Step 3: Analyze Similarity 3**
- Arushi states: "In both reproductive systems, fertilization takes place in the oviduct."
- **Analysis**: This is also true. In both humans and hens, fertilization occurs in the oviduct.
- **Conclusion**: This statement is correct.

**Step 4: Analyze Similarity 4**
- Arushi states: "Both reproductive systems have ovaries, oviducts, and a uterus."
- **Analysis**: Humans have ovaries, oviducts, and a uterus. Hens have ovaries and oviducts, but they do not have a uterus in the same sense as humans. Instead, they have a structure called the "shell gland" where the egg is formed after fertilization.
- **Conclusion**: This statement is partially correct but misleading as hens do not have a uterus like humans.

**Final Conclusion**: The incorrect statement made by Arushi is **Similarity 1**: "Both reproductive systems fertilize eggs internally and deliver babies."