Which of the following statement is correct about glycolysis ?

Options

A. In this process, glucose undergoes complete oxidation to form two molecules of pyruvic acid.
B. In aerobic organisms, it is the only process in respiration.
C. The fructose 1, 6-bisphosphate is split into dihydroxyacetone phosphate and 3- phosphoglyceraldehyde (PGAL).
D. In plants, this glucose is derived from sucrose, which is the end product of photosynthesis, or from structural carbohydrates like starch.

Answer

To solve the question about glycolysis and identify the correct statement, we can analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding Glycolysis**: Glycolysis is a metabolic pathway that converts glucose into pyruvate, producing a small amount of ATP and NADH in the process. It occurs in the cytoplasm of cells and does not require oxygen.

2. **Analyzing Each Statement**:
- **Option A**: "In this process glucose undergoes complete oxidation to form two molecules of pyruvic acid."
- **Analysis**: Glycolysis involves the conversion of glucose (a 6-carbon molecule) into two molecules of pyruvate (3-carbon molecules). However, this process is considered a partial oxidation because the complete oxidation of glucose occurs later in the Krebs cycle and electron transport chain. Therefore, this statement is **incorrect**.

- **Option B**: "In aerobic organisms, it is the only process in respiration."
- **Analysis**: In aerobic respiration, glycolysis is the first step, but it is followed by the Krebs cycle and oxidative phosphorylation. Thus, glycolysis is not the only process in aerobic respiration. This statement is also **incorrect**.

- **Option C**: "The fructose 1,6-bisphosphate is split into dihydroxyacetone phosphate and 3-phosphoglyceraldehyde in plants."
- **Analysis**: This statement is accurate. During glycolysis, fructose 1,6-bisphosphate is split into two 3-carbon molecules: dihydroxyacetone phosphate (DHAP) and glyceraldehyde-3-phosphate (G3P). This reaction is catalyzed by the enzyme aldolase and is part of the preparatory phase of glycolysis. Therefore, this statement is **correct**.

- **Option D**: "Glucose is derived from sucrose which is the end product of photosynthesis or from structural carbohydrates like starch."
- **Analysis**: While glucose can be derived from sucrose (which is formed from photosynthesis), the statement about deriving glucose from structural carbohydrates like starch is misleading. Starch is a storage carbohydrate, and glucose is indeed derived from it, but structural carbohydrates like cellulose do not directly provide glucose. Therefore, this statement is **incorrect**.

3. **Conclusion**: After analyzing all the statements, the only correct statement about glycolysis is **Option C**.

### Final Answer:
The correct statement about glycolysis is: **C) The fructose 1,6-bisphosphate is split into dihydroxyacetone phosphate and 3-phosphoglyceraldehyde in plants.**