Read the following statement regarding bryophytes and select the correct answer.
(i). Bryophytes lack true roots, stem and leaves.
(ii). The main plant body is haploid
(iii). Sex-organs are unicellular and non-jacketed
(iv). Fertilisation produces an embryo inside the water.

Options

A. Statement I and II are true
B. Statement ii and iii are true.
C. Statement iii and iv are correct
D. All statements are true.

Explanation

To solve the question regarding bryophytes, we will analyze each statement provided and determine its correctness step by step.

### Step 1: Analyze Statement (i)
**Statement:** Bryophytes lack true roots, stems, and leaves.

**Analysis:** Bryophytes are non-vascular plants and do not have true roots, stems, or leaves. Instead, they have structures that perform similar functions but are not differentiated into true organs. Therefore, this statement is **correct**.

### Step 2: Analyze Statement (ii)
**Statement:** The main plant body is haploid.

**Analysis:** In bryophytes, the dominant phase of the life cycle is the gametophyte, which is haploid. The sporophyte, which is diploid, is dependent on the gametophyte for nutrition. Therefore, this statement is also **correct**.

### Step 3: Analyze Statement (iii)
**Statement:** Sex-organs are unicellular and non-jacketed.

**Analysis:** In bryophytes, the sex organs (antheridia and archegonia) are multicellular and jacketed to protect the gametes from desiccation, especially since fertilization occurs in a moist environment. Therefore, this statement is **incorrect**.

### Step 4: Analyze Statement (iv)
**Statement:** Fertilization produces an embryo inside the water.

**Analysis:** Fertilization in bryophytes occurs within the archegonium (the female reproductive structure), not directly in the water. The embryo develops within the archegonium after fertilization. Therefore, this statement is also **incorrect**.

### Conclusion
Based on the analysis:
- Statement (i) is **correct**.
- Statement (ii) is **correct**.
- Statement (iii) is **incorrect**.
- Statement (iv) is **incorrect**.

Thus, the correct answer is that statements (i) and (ii) are true.