Read the following statements :-
(A) Asexual reproduction in liverworts takes place by spore formation
(B) In Marchantia gemmae are green, unicellular asexual buds.
(C) Vegetative reproduction in mosses is by fragmentation and budding in the secondary protonema.
(D) The sporophyte in mosses is more elaborate than that in liverworts. In above statements how many are correct & incorrect.

Options

A. A, C - correct, B, D - incorrect
B. A, D - correct, B, C - incorrect
C. C, D - correct, A, B - incorrect
D. A, B - correct, C, D - incorrect

Answer

To determine how many statements are correct and incorrect, we will analyze each statement one by one.

### Step 1: Analyze Statement A
**Statement A:** Asexual reproduction in liverworts takes place by spore formation.
- **Analysis:** This statement is incorrect. Asexual reproduction in liverworts primarily occurs through fragmentation and the formation of gemmae, not by spore formation.

### Step 2: Analyze Statement B
**Statement B:** In Marchantia, gemmae are green, unicellular asexual buds.
- **Analysis:** This statement is also incorrect. While gemmae in Marchantia are green and photosynthetic, they are not unicellular; they are multicellular structures.

### Step 3: Analyze Statement C
**Statement C:** Vegetative reproduction in mosses is by fragmentation and budding in the secondary protonema.
- **Analysis:** This statement is correct. Mosses can reproduce vegetatively through fragmentation and budding in the secondary protonema, which develops from the spores.

### Step 4: Analyze Statement D
**Statement D:** The sporophyte in mosses is more elaborate than that in liverworts.
- **Analysis:** This statement is correct. The sporophyte structure in mosses is indeed more complex and elaborate compared to that in liverworts.

### Conclusion
- **Correct Statements:** C and D
- **Incorrect Statements:** A and B

### Final Count
- **Total Correct Statements:** 2 (C and D)
- **Total Incorrect Statements:** 2 (A and B)

### Summary
Out of the four statements, two are correct (C and D) and two are incorrect (A and B).

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