Excretion, irritability and reproduction are characteristics of:

Options

A. All animals and plants
B. Animals only
C. Plants only
D. Some animals and some plants only

Answer

To solve the question "Excretion, irritability and reproduction are characteristics of:", we can follow these steps:

### Step 1: Understand the Characteristics
- **Excretion**: This is the process by which organisms remove waste products from their bodies. Both plants and animals have mechanisms for excretion.
- **Irritability**: This refers to the ability of an organism to respond to stimuli from the environment. Both plants and animals exhibit irritability, although the mechanisms may differ.
- **Reproduction**: This is the biological process through which new individual organisms are produced. Both plants and animals reproduce, but the methods can vary.

### Step 2: Analyze the Options
1. **Animals only**: This option suggests that only animals exhibit these characteristics. However, plants also perform excretion, respond to stimuli, and reproduce, making this option incorrect.
2. **Plants only**: This option implies that only plants have these characteristics. This is also incorrect since animals share these characteristics as well.
3. **Some animals and some plants only**: This option suggests that only certain animals and certain plants exhibit these characteristics, which is too restrictive and does not encompass the full range of organisms.
4. **Both plants and animals**: This option indicates that both groups exhibit the characteristics of excretion, irritability, and reproduction.

### Step 3: Choose the Correct Answer
Based on the analysis, the correct answer is that excretion, irritability, and reproduction are characteristics of **both plants and animals**.

### Final Answer
Excretion, irritability, and reproduction are characteristics of **both plants and animals**.

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