Mark the incorrect statement.

Options

A. Breaking of C-C bonds of complex organic molecules by oxidation cells leading to the release of a lot of energy is called cellular respiration
B. initial stage of cellular respiration takes place in cytoplasm
C. Incomplete oxidation of pyruvate by the stepwise removal of all the hydrogen atoms, leaving three molecules of `CO_(2)`
D. TCA cycle starts with the condensation of acetyl group with OAA and `H_(2)O` to yield citric acid

Answer

To solve the question of marking the incorrect statement regarding respiration in plants, we will analyze each statement provided in the question step-by-step.

### Step 1: Analyze the First Statement
**Statement:** "Breaking of carbon-carbon bonds of complex organic molecules by oxidation cells leading to the release of a lot of energy is called cellular respiration."

**Analysis:** This statement accurately describes cellular respiration. It involves the breakdown of complex organic molecules, which releases energy. Therefore, this statement is **correct**.

### Step 2: Analyze the Second Statement
**Statement:** "Initially, the stage of cellular respiration takes place in the cytoplasm."

**Analysis:** This statement is also correct. The initial stage of cellular respiration is glycolysis, which occurs in the cytoplasm of the cell. Thus, this statement is **correct**.

### Step 3: Analyze the Third Statement
**Statement:** "Incomplete oxidation of pyruvate by stepwise removal of hydrogen atom leaving three molecules of CO2."

**Analysis:** This statement is incorrect. The oxidation of pyruvate during cellular respiration leads to the complete oxidation of the pyruvate molecule, resulting in the production of three molecules of CO2. If pyruvate produces three CO2 molecules, it indicates complete oxidation, not incomplete. Therefore, this statement is **incorrect**.

### Step 4: Analyze the Fourth Statement
**Statement:** "TCA cycle starts with the condensation of acetyl group with oxaloacetic acid and H2O to yield citric acid."

**Analysis:** This statement is correct. The TCA cycle (Krebs cycle) indeed starts with the condensation of acetyl coenzyme A with oxaloacetic acid to form citric acid, and water is involved in this reaction. Thus, this statement is **correct**.

### Conclusion
After analyzing all the statements, the incorrect statement is the third one: "Incomplete oxidation of pyruvate by stepwise removal of hydrogen atom leaving three molecules of CO2."

### Final Answer
**The incorrect statement is:** "Incomplete oxidation of pyruvate by stepwise removal of hydrogen atom leaving three molecules of CO2."

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