Given below are four statements i-iv regarding geological time scale. Read them carefully.
(i) Paleozoic era is the era of ancient life.
(ii) Ordovician period is the age of vertebraes.
(iii) Carboniferous period is the age of reptiles
(iv) Proterozoic era is the era of early life
Which of the above two statements are incorrect ?

Options

A. I and iv
B. ii and iii
C. ii and iv
D. i and iii

Explanation

To solve the question regarding the geological time scale and identify the two incorrect statements, we will analyze each of the four statements one by one.

### Step-by-Step Solution:

1. **Analyze Statement (i):**
- **Statement:** "Paleozoic era is the era of ancient life."
- **Evaluation:** This statement is true. The Paleozoic era is indeed known as the era of ancient life, which saw significant diversification of both plant and animal life.

2. **Analyze Statement (ii):**
- **Statement:** "Ordovician period is the age of vertebrates."
- **Evaluation:** This statement is incorrect. The Ordovician period, which is part of the Paleozoic era, is primarily known for the abundance of invertebrate animals. Jawless vertebrates appeared later in the Silurian period.

3. **Analyze Statement (iii):**
- **Statement:** "Carboniferous period is the age of reptiles."
- **Evaluation:** This statement is also incorrect. The Carboniferous period is characterized by the dominance of amphibians, not reptiles. Reptiles began to emerge later, during the Permian period.

4. **Analyze Statement (iv):**
- **Statement:** "Proterozoic era is the era of early life."
- **Evaluation:** This statement is true. The Proterozoic era predates the Paleozoic and is known for the presence of simple, early life forms.

### Conclusion:
After evaluating all four statements, we find that the incorrect statements are:
- **Statement (ii):** "Ordovician period is the age of vertebrates."
- **Statement (iii):** "Carboniferous period is the age of reptiles."

Thus, the two incorrect statements are (ii) and (iii).

### Final Answer:
The two incorrect statements are (ii) and (iii).

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