Which of these is mismatched

Options

A. (a) phanero-visible
B. (b) krypto-concealed
C. (c) gymno-naked
D. (d) thallus-diploid

Answer

To determine which of the options is mismatched, we will analyze each statement one by one.

1. **Option A: Fanero visible**
- This term refers to plants that have visible seeds. Gymnosperms and angiosperms are examples of such plants, as they produce seeds that are not concealed. Therefore, this statement is true.

2. **Option B: Crypto concealed**
- The term "crypto" refers to plants with concealed seeds, which is characteristic of cryptogams such as ferns, mosses, and algae. These plants do not produce seeds in the traditional sense, and their reproductive structures are not visible. Thus, this statement is also true.

3. **Option C: Gymno naked**
- The term "gymno" means naked, which accurately describes gymnosperms. Gymnosperms have naked seeds that are not enclosed in an ovary. This statement is true as well.

4. **Option D: Thallus diploid**
- The term "thallus" refers to a simple, undifferentiated body structure found in certain plants, such as algae and liverworts. Thalli are typically haploid, meaning they have a single set of chromosomes. Therefore, stating that thallus is diploid is incorrect and mismatched.

Based on the analysis, the mismatched option is **D: Thallus diploid**.