In organism 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 statement?

Options

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

Answer

To solve the question, we need to identify the correct terms that complete the statement regarding organisms with a specific life cycle. Here’s a step-by-step breakdown of the solution:

### Step 1: Identify the Life Cycle
The question states that the adult organism is haploid. This indicates that the organism exhibits a **haplontic life cycle**. In a haplontic life cycle, the dominant stage is the haploid phase.

### Step 2: Determine the Process of Gamete Formation
Next, we need to determine how the haploid adult forms gametes. The options provided are likely to include mitosis and meiosis.

### Step 3: Understand Mitosis and Meiosis
- **Mitosis** is known as equational division, meaning that it produces cells with the same number of chromosomes as the parent cell. If the parent cell is haploid (N), the daughter cells will also be haploid (N).
- **Meiosis**, on the other hand, is a reductional division, which reduces the chromosome number by half. If the parent cell is diploid (2N), the resulting cells will be haploid (N).

### Step 4: Apply the Knowledge to the Question
Since the adult organism is already haploid (N), it cannot undergo meiosis to produce gametes, as that would further reduce the chromosome number. Instead, it will undergo mitosis to produce haploid gametes, maintaining the haploid state.

### Conclusion
Thus, the completed statement is:
In organisms that exhibit the **haplontic life cycle**, the adult is haploid and it forms haploid gametes through **mitosis**.

### Final Answer
(i) haplontic life cycle, (ii) mitosis.

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