Read the following statements and select the incorrect one.

Options

A. Cucurbits and coconuts are monoecious plants.
B. Papayas and date palms are dioecious plants.
C. Leeches and tapeworms are bisexual animals.
D. Sponges and coelenterates are unisexual animals.

Explanation

To solve the question, we need to analyze the statements provided and identify the incorrect one. Here’s a step-by-step breakdown:

### Step 1: Analyze the First Statement
- **Statement**: Cucurbits and coconuts are monoecious plants.
- **Explanation**: Monoecious plants have both male and female reproductive organs in the same individual. Cucurbits (like cucumbers and pumpkins) and coconuts do indeed have both male (stamens) and female (pistils) parts in the same plant.
- **Conclusion**: This statement is **correct**.

### Step 2: Analyze the Second Statement
- **Statement**: Papayas and date palms are dioecious plants.
- **Explanation**: Dioecious plants have male and female reproductive organs on separate individuals. Papayas and date palms fit this description as they have distinct male and female plants.
- **Conclusion**: This statement is **correct**.

### Step 3: Analyze the Third Statement
- **Statement**: Leeches and tephorms are bisexual animals.
- **Explanation**: Bisexual animals possess both male and female reproductive organs in the same individual. Leeches are known to have both reproductive organs, making them bisexual. However, "tephorms" seems to be a typographical error; if it refers to "tapeworms," they are also known to be hermaphroditic (bisexual).
- **Conclusion**: This statement is **correct**.

### Step 4: Analyze the Fourth Statement
- **Statement**: Sponges and coelenterates are unisexual animals.
- **Explanation**: Unisexual animals have either male or female reproductive organs, but not both. However, sponges and coelenterates (like jellyfish and corals) are typically bisexual, meaning they have both male and female reproductive organs in the same individual.
- **Conclusion**: This statement is **incorrect**.

### Final Answer
The incorrect statement is: **Sponges and coelenterates are unisexual animals.**

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