Which of the following situations correctly describe the similarity between an angiosperm egg and a human egg ?
(i) Eggs of both are formed only once in a lifetime.
(ii) Both the angiosperm egg and human egg are stationary.
(iii) Both the angiosperm egg and human egg are motile transported.
(iv) Syngamy in both results in the formation of a zygote.

Options

A. ii and iv
B. iv only
C. iii and iv
D. I and only

Explanation

To solve the question regarding the similarities between an angiosperm egg and a human egg, we will analyze each statement provided in the question.

### Step-by-Step Solution:

1. **Understanding the Context**:
- An **angiosperm egg** is the female gamete found in flowering plants, developed from the ovule within the ovary.
- A **human egg** (ovum) is the female gamete produced in the ovaries of humans.

2. **Analyzing Each Statement**:
- **Statement (i)**: "Eggs of both are formed only once in a lifetime."
- **Analysis**: This statement is incorrect. In humans, eggs are produced monthly from menarche until menopause. In angiosperms, eggs are produced in each reproductive cycle. Thus, both produce eggs multiple times in their lifetime.

- **Statement (ii)**: "Both the angiosperm egg and human egg are stationary."
- **Analysis**: This statement is also incorrect. The human egg is motile as it is transported through the fallopian tube after ovulation. In contrast, the angiosperm egg is stationary, as it remains within the ovule until fertilization occurs.

- **Statement (iii)**: "Both the angiosperm egg and human egg are motile transported."
- **Analysis**: This statement is incorrect. While the human egg is motile, the angiosperm egg is not motile and remains in place within the ovule. Therefore, this statement does not hold true for both.

- **Statement (iv)**: "Syngamy in both results in the formation of a zygote."
- **Analysis**: This statement is correct. In both cases, syngamy (the fusion of gametes) leads to the formation of a zygote. In humans, the sperm and egg fuse to form a diploid zygote. In angiosperms, double fertilization occurs, resulting in the formation of a zygote as well.

3. **Conclusion**:
- The only statement that accurately describes a similarity between an angiosperm egg and a human egg is **Statement (iv)**. Therefore, the correct answer is **Option B: 4 only**.