Consider the following four statements whether they are correct or worng.

Options

A. The sporophyte in liverworts is more elaborate than that in mosses
B. Salvinia is heterosporous
C. The life-cycle in all seed-bearing plants is diplontic
D. In Pinus male and female cones are borne on different trees

Answer

To determine whether the statements about the plant kingdom are correct or wrong, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement A: "The sporophytes in liverworts are more elaborate than in mosses."**
- **Analysis:** The sporophytes in liverworts are generally simpler and less elaborate compared to those in mosses. Mosses have a more developed sporophyte structure that includes a capsule with an effective mechanism for spore dispersal.
- **Conclusion:** This statement is **wrong**.

2. **Statement B: "Salvinia is ectosporous."**
- **Analysis:** Ectosporous refers to the production of spores that are of differing sizes. Salvinia, a type of water fern, does indeed produce spores that vary in size, which qualifies it as ectosporous.
- **Conclusion:** This statement is **correct**.

3. **Statement C: "The life cycle in all seed-bearing plants is diplontic."**
- **Analysis:** While many seed-bearing plants do exhibit a diplontic life cycle, some also display an alternation of generations that includes haploid stages. Therefore, not all seed-bearing plants have a strictly diplontic life cycle.
- **Conclusion:** This statement is **wrong**.

4. **Statement D: "In ferns, male and female gametophytes are found on different plants."**
- **Analysis:** This statement is true for some ferns, which are monoecious, meaning that both male and female gametophytes can be found on the same plant. However, in some species, they can be found on separate plants (dioecious). The statement as it stands is misleading.
- **Conclusion:** This statement is **correct**.

### Summary of Statements:
- **Statement A:** Wrong
- **Statement B:** Correct
- **Statement C:** Wrong
- **Statement D:** Correct

### Final Answer:
- Statements A and C are incorrect.
- Statements B and D are correct.