No zoospore formation has been observed in the algal members belonging to :-

Options

A. Chlorophyceae
B. Brown Algae
C. Phaeophyceae
D. Cyanophyceae

Answer

To solve the question regarding which algal members do not exhibit zoospore formation, we can follow these steps:

### Step 1: Understand the concept of zoospores
Zoospores are motile spores that are capable of swimming due to the presence of flagella. They are typically produced by certain groups of algae during asexual reproduction.

**Hint:** Remember that zoospores are associated with motile reproduction in algae.

### Step 2: Identify the groups of algae mentioned
The options provided are:
- Chlorophyce (Green algae)
- Brown algae (Phaeophyceae)
- Cyanophyce (Cyanobacteria)
- Phyophyce (This seems to be a typo; it likely refers to Phaeophyceae or brown algae)

**Hint:** Familiarize yourself with the characteristics of each algal group.

### Step 3: Analyze the reproduction methods of each group
- **Chlorophyce:** Known to produce zoospores during asexual reproduction.
- **Brown algae (Phaeophyceae):** Also produce zoospores.
- **Cyanophyce (Cyanobacteria):** Do not form zoospores. They reproduce mainly through fragmentation and non-motile spores.

**Hint:** Focus on the reproduction methods of each group to determine which does not produce zoospores.

### Step 4: Conclude based on the analysis
Since Cyanophyce (Cyanobacteria) does not produce zoospores and relies on fragmentation or non-motile spores for reproduction, it is the correct answer to the question.

**Final Answer:** The algal members belonging to Cyanophyce do not exhibit zoospore formation.