In organisms that exhibit the (i) life cycle, the adult is haploid and it forms haploid gametes through (ii). The information in which alternative completes the given statements?

Options

A. `{:("(i)",(ii)),("haplontic","mitosis"):}`
B. `{:("(i)",(ii)),("haplontic","meiosis"):}`
C. `{:("(i)",(ii)),("diplontic","mitosis"):}`
D. `{:("(i)",(ii)),("haplontic","meiosis"):}`

Answer

To solve the question, we need to identify the correct terms that complete the statements regarding the life cycle of organisms that are haploid.

### Step-by-Step Solution:

1. **Understanding the Life Cycle**:
- The question states that the adult organism is haploid. This means it has only one set of chromosomes (n).
- In such organisms, the adult form primarily exists in the haploid stage.

2. **Identifying the Life Cycle Type**:
- The type of life cycle where the adult is primarily haploid is known as the **haplontic life cycle**.
- In this cycle, the organism spends most of its life in the haploid state.

3. **Formation of Gametes**:
- The question also mentions that the adult forms haploid gametes.
- Since the adult is already haploid, the process of gamete formation in this case would involve **mitosis**.
- Mitosis is a type of cell division that results in two daughter cells that are genetically identical to the parent cell, and since the parent is haploid, the daughter cells (gametes) will also be haploid.

4. **Finalizing the Answers**:
- Therefore, the first blank (i) can be filled with **haplontic** and the second blank (ii) can be filled with **mitosis**.

### Complete Answer:
- The correct alternatives that complete the statements are:
- (i) haplontic
- (ii) mitosis