Which one is correct about Marchantia (Liverwort)?

Options

A. Plant body is monoecious or dioecious
B. Sporophyte is differentiated into foot, seta and capsule
C. Spore germinates to produce thallus
D. All

Answer

To determine which statement is correct about Marchantia (Liverwort), we can analyze the information provided in the video transcript step by step:

### Step 1: Understanding the Classification of Marchantia
- Marchantia is classified under Bryophytes, which are often referred to as the "amphibians of the plant kingdom" because they require water for sexual reproduction.

**Hint:** Bryophytes include liverworts and mosses, and they have a unique reproductive strategy that involves water.

### Step 2: Evaluating the Plant Body Structure
- The first statement mentions that the plant body is monoecious or dioecious.
- **Monoecious** means that both male and female reproductive organs are present on the same plant.
- **Dioecious** means that male and female reproductive organs are on separate plants.
- It is noted that about 80% of liverworts are dioecious, while 20% are monoecious. Thus, this statement is correct.

**Hint:** Remember the definitions of monoecious and dioecious to understand how liverworts reproduce.

### Step 3: Analyzing the Sporophyte Structure
- The second statement discusses the sporophyte structure, stating that it is differentiated into foot, seta, and capsule.
- This is indeed correct. The sporophyte in liverworts is multicellular and diploid, and it consists of these three parts:
- **Foot**: Anchors the sporophyte to the gametophyte.
- **Seta**: The stalk that supports the capsule.
- **Capsule**: Where meiosis occurs to produce spores.

**Hint:** Focus on the structure of the sporophyte and its components to understand its function in reproduction.

### Step 4: Understanding the Germination of Spores
- The transcript explains that after meiosis, spores are produced in the capsule, which then germinate to form a thallus-like structure known as a gametophyte.
- The gametophyte is haploid and represents the main plant body of bryophytes.

**Hint:** Keep in mind the life cycle of bryophytes, particularly how spores develop into gametophytes.

### Conclusion
- Based on the evaluation of both statements, we can conclude that both statements about Marchantia are correct. Therefore, the correct option is "All."

**Final Answer:** The correct answer is that all statements about Marchantia (Liverwort) are correct.