24)The organelle responsible for photosynthesis in plant cells is: Mitochondria Ribosome Chloroplast Nucleus

Step 1: Identify the Organelles

To determine which organelle is responsible for photosynthesis in plant cells, we need to consider the functions of the options provided:

1. Mitochondria: This organelle is responsible for energy production through respiration.
2. Ribosome: Ribosomes are involved in protein synthesis.
3. Chloroplast: This organelle is specifically known for its role in photosynthesis.
4. Nucleus: The nucleus contains genetic material and regulates cellular activities but does not participate in photosynthesis.

Step 2: Determine the Function of Chloroplast

Chloroplasts contain chlorophyll, the green pigment that captures light energy from the sun to convert carbon dioxide and water into glucose and oxygen, a process known as photosynthesis.

Step 3: Summary of Findings

Based on the functions of the organelles listed, the chloroplast is the only organelle that carries out photosynthesis in plant cells.

Final Answer

The organelle responsible for photosynthesis in plant cells is Chloroplast.