Which of these plants is correctly matched with its reproductive characteristics ?
(i) Sphagnum : Male sex organ called antheridium produce biflagellate antherozoids while the female sex organ called archesporium produces a single egg .
(ii) sequoia : One of the megaspores enclosed within the megasporangium develops into a multicellular female gametophyte that bears two or more archegonia or female sex organs
(iii) Wolffia : one of the male gametes fuses with the egg cell to from a zygote while the other male gamete fuses with the diploid secondary nucleus to produce the triploid primary endosperm nuclelus .
(iv) polysiphonia . Sexual reproduction is oogamous with non-motile gametes and accompanied by complex post-fertilization developments

Options

A. i and ii
B. i , ii and iv
C. ii,iii and iv
D. i ,ii, iii and iv

Answer

To determine which of the plants is correctly matched with its reproductive characteristics, we will analyze each option one by one.

### Step 1: Analyze Sphagnum
- **Description**: Male sex organ called antheridium produces biflagellate antherozoids while the female sex organ called archesporium produces a single egg.
- **Analysis**:
- The male sex organ in Sphagnum is indeed called antheridium, and it does produce biflagellate antherozoids.
- However, the female sex organ is incorrectly referred to as "archesporium." The correct term is "archegonium," which produces a single egg.
- **Conclusion**: This statement is **incorrect**.

### Step 2: Analyze Sequoia
- **Description**: One of the megaspores enclosed within the megasporangium develops into a multicellular female gametophyte that bears two or more archegonia or female sex organs.
- **Analysis**:
- Sequoia is a gymnosperm, and it does produce megaspores within megasporangia.
- The development of a multicellular female gametophyte that bears multiple archegonia is accurate.
- **Conclusion**: This statement is **correct**.

### Step 3: Analyze Wolffia
- **Description**: One of the male gametes fuses with the egg cell to form a zygote while the other male gamete fuses with the diploid secondary nucleus to produce the triploid primary endosperm nucleus.
- **Analysis**:
- Wolffia is indeed an angiosperm, and it undergoes a process called double fertilization.
- One male gamete fuses with the egg to form the zygote, and the other fuses with the secondary nucleus to form the triploid endosperm.
- **Conclusion**: This statement is **correct**.

### Step 4: Analyze Polysiphonia
- **Description**: Sexual reproduction is oogamous with non-motile gametes and accompanied by complex post-fertilization developments.
- **Analysis**:
- Polysiphonia is a red alga, and its sexual reproduction is indeed oogamous.
- In oogamous reproduction, one gamete is large and non-motile (female), while the other is smaller and motile (male).
- The statement correctly describes the reproductive process.
- **Conclusion**: This statement is **correct**.

### Final Conclusion:
The plants that are correctly matched with their reproductive characteristics are:
- **Sequoia** (correct)
- **Wolffia** (correct)
- **Polysiphonia** (correct)

Thus, the correct answer includes statements (ii), (iii), and (iv).