Select the correct statement.

Options

A. The algal cell wall is made up of cellulose, algin, pectin and polysulphate esters
B. Most of the gymnosperms are homosporous
C. Most of the pteridophytes are heterosporus, and some are homosporus.
D. Water is not required for fertilisation in seed plants like Selaginella and Salvinia

Answer

To solve the question of selecting the correct statement regarding algae and plant biology, we can follow these steps:

### Step 1: Analyze the First Statement
The first statement claims that the algae cell wall is made up of cellulose, algin, pectin, and polysulfate esters.
- **Analysis**: Algae do have a cell wall, and it can contain cellulose and pectin. Specifically, red algae have a cell wall composed of cellulose and pectin, along with polysulfate esters. Therefore, this statement is correct.

### Step 2: Analyze the Second Statement
The second statement asserts that most gymnosperms are homosporous.
- **Analysis**: Gymnosperms are known to be heterosporous, meaning they produce two types of spores: microspores and megaspores. Thus, this statement is incorrect.

### Step 3: Analyze the Third Statement
The third statement states that most pteridophytes are heterosporous and some are homosporous.
- **Analysis**: This is misleading. Most pteridophytes are homosporous (producing one type of spore), while only some are heterosporous. Therefore, this statement is also incorrect.

### Step 4: Analyze the Fourth Statement
The fourth statement claims that water is not required for fertilization in seed plants like Selaginella and Salvinia.
- **Analysis**: Both Selaginella and Salvinia are types of pteridophytes and do require water for fertilization. Therefore, this statement is incorrect.

### Conclusion
After analyzing all four statements, the only correct statement is the first one: "Algae cell wall is made up of cellulose, algin, pectin, and polysulfate esters."

### Final Answer
The correct answer is: **Option 1**.

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