In which of the following is the sporophytic stage dominant ?

Options

A. Angiosperms and algae
B. Gymnosperms and Bryophytes
C. Bryophytes and Pteridophytes
D. Gymnosperms and Angiosperms

Answer

To determine which of the following plant groups has a dominant sporophytic stage, we will analyze each option one by one.

### Step-by-Step Solution:

1. **Understand the Life Cycle of Plants**:
- Plants have two main stages in their life cycle: the gametophyte stage (haploid) and the sporophyte stage (diploid). The dominant stage is the one that is more prominent and longer-lived in the plant's life cycle.

2. **Analyze the First Option - Angiosperms and Algae**:
- Angiosperms (flowering plants) have a dominant sporophytic stage. However, algae typically exhibit a haplontic life cycle, where the sporophyte is not free-living and is represented only by the zygote. Therefore, this option is incorrect.

3. **Analyze the Second Option - Gymnosperms and Bryophytes**:
- Gymnosperms (naked seed plants) have a dominant sporophytic stage. However, bryophytes (mosses and liverworts) have a dominant gametophyte stage, with the sporophyte being dependent on the gametophyte. Thus, this option is also incorrect.

4. **Analyze the Third Option - Bryophytes and Teridophytes**:
- As mentioned, bryophytes have a dominant gametophyte stage. Teridophytes (ferns) have a dominant sporophytic stage, but since bryophytes do not, this option is incorrect.

5. **Analyze the Fourth Option - Gymnosperms and Angiosperms**:
- Both gymnosperms and angiosperms have a dominant sporophytic stage. In gymnosperms, the sporophyte is the main plant body, and in angiosperms, the flowering plants also have a dominant sporophyte. Therefore, this option is correct.

### Conclusion:
The correct answer is **Gymnosperms and Angiosperms**, as both groups exhibit a dominant sporophytic stage.

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