Autopolyploids are the organisms with:

Options

A. Chromosomes are derived from different species.
B. Multiple chromosomal sets that come from multiple species.
C. Multiple chromosomal sets that come from a single species.
D. Both (a) and (c)

Explanation

To solve the question about what autopolyploids are, we can break it down step by step:

### Step 1: Understand the term "autopolyploid"
Autopolyploid refers to organisms that have more than two sets of chromosomes, all of which are derived from the same species. This means that the organism has multiple copies of its own chromosomes.

**Hint:** Remember that "auto" in autopolyploid means "self" or "same," indicating that the chromosome sets come from the same species.

### Step 2: Analyze the options given
1. **Chromosomes are derived from different species.** - This option describes allopolyploids, not autopolyploids.
2. **Multiple chromosomes are derived from multiple species.** - This also describes allopolyploids.
3. **Multiple chromosomes are derived from a single species.** - This is the correct description of autopolyploids.
4. **Both are derived from A and C.** - This option is incorrect as A does not pertain to autopolyploids.

**Hint:** Focus on the definition of autopolyploid and eliminate options that refer to multiple species.

### Step 3: Identify the correct answer
From the analysis, the correct answer is that autopolyploids have multiple chromosomes derived from a single species.

**Hint:** Look for keywords in the definitions that align with the concept of autopolyploidy.

### Final Answer
Autopolyploids are organisms with multiple chromosomes derived from a single species.