select the incorrect statement.

Options

A. photoperiod affects reproduction in seasonal breeders, both plants and animals
B. properties of cellular organelles are not present in the molecular constituents of the organelles.
C. properties of tissue arise as a result of interaction among the constituent cells
D. living organisms are self replicating and evolving but not self-regulating interactive systems capable of responding to external stimuli

Answer

To solve the question of selecting the incorrect statement, we will analyze each of the four given statements one by one.

### Step-by-Step Solution:

1. **Statement 1: "Photo period affects reproduction in seasonal breeders, both plants and animals."**
- **Analysis:** The photo period refers to the duration of light exposure that organisms receive in a 24-hour period. It is well-documented that many plants and animals use this information to time their reproductive cycles. For instance, certain plants flower based on the length of day or night, and many animals breed in response to seasonal changes in daylight.
- **Conclusion:** This statement is **true**.

2. **Statement 2: "The properties of cellular organelles are not present in molecular constituents of the organelles."**
- **Analysis:** Cellular organelles, such as mitochondria, have specific properties that arise from their structure and function as a whole. The molecular constituents (like proteins, lipids, etc.) do not exhibit the same properties as the organelle itself because they are individual components rather than a functional unit.
- **Conclusion:** This statement is **true**.

3. **Statement 3: "Properties of tissue arise as a result of interaction among the constituent cells."**
- **Analysis:** Tissues are indeed composed of groups of cells that work together to perform a specific function. The properties of a tissue are a result of the interactions and organization of these cells, which is a fundamental concept in biology.
- **Conclusion:** This statement is **true**.

4. **Statement 4: "Living organisms are self-replicating, evolving, but not self-regulating, interactive systems capable of responding to external stimuli."**
- **Analysis:** Living organisms are indeed self-replicating and evolving. However, they are also self-regulating and capable of responding to external stimuli. The phrase "not self-regulating" is incorrect because living organisms maintain homeostasis and regulate their internal environment despite external changes.
- **Conclusion:** This statement is **false**.

### Final Answer:
The incorrect statement is **Statement 4**.

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