The dominant photosynthetic phase in the life cycle of pteridophyta is equivalent to the

Options

A. Gametophytic phase of bryophyta
B. Sporophytic phase of bryophyta
C. Gametophytic phase of pteridophyta
D. Gametophytic phase of gymnosperm

Answer

To solve the question regarding the dominant photosynthetic phase in the life cycle of pteridophyta, let's break it down step by step:

### Step-by-Step Solution:

1. **Understand the Life Cycle of Pteridophyta**:
- Pteridophytes, which include ferns and their relatives, exhibit a life cycle that alternates between two phases: the sporophyte (diploid) and the gametophyte (haploid).

2. **Identify the Dominant Phase in Pteridophyta**:
- In pteridophytes, the dominant phase is the sporophyte. This means that the sporophyte is the larger, more complex, and photosynthetically active part of the life cycle.

3. **Compare with Bryophyta**:
- In contrast, bryophytes (like mosses) have a dominant gametophyte phase, which is haploid. The sporophyte in bryophytes is dependent on the gametophyte and is usually smaller and less photosynthetically active.

4. **Analyze the Options**:
- The options provided are:
a) Gametophytic phase of bryophyta
b) Sporophytic phase of bryophyta
c) Gametophytic phase of pteridophytes
d) Gametophytic phase of gymnosperms
- Since the dominant phase in pteridophyta is sporophyte, we need to find the equivalent phase in bryophyta.

5. **Identify the Correct Answer**:
- The correct answer is the **gametophytic phase of bryophyta**. This is because while pteridophytes have a dominant sporophyte phase, bryophytes have a dominant gametophyte phase, making them equivalent in terms of dominance in their respective life cycles.

### Final Answer:
The dominant photosynthetic phase in the life cycle of pteridophyta is equivalent to the **gametophytic phase of bryophyta**.

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