The cell organelle, from which spindle fibers originate during cell division in animal cells is known as

Step 1: Analyze the question The question asks which organelle gives rise to spindle fibers during cell division in animal cells.

Step 2: Explain the concept During mitosis and meiosis, spindle fibers (microtubules) pull chromosomes apart so each daughter cell gets the correct set. In animal cells, these fibers are organized by the centrosome, which contains a pair of centrioles. During prophase, the centrosome duplicates and the two centrosomes move to opposite poles of the cell. Spindle fibers then extend from them toward the chromosomes.

Step 3: Check each option

• A. Centrosome: Organizes the microtubules that form the spindle. ✔
• B. Chromosome: Carries genetic material and is moved by spindle fibers. It does not produce them.
• C. Leucoplast: A colourless plastid in plant cells that stores food, such as starch.
• D. Lysosome: Contains digestive enzymes for breaking down waste and worn-out parts.
• E. Ribosome: The site of protein synthesis.

Step 4: Answer The correct option is A. Centrosome.

Tip: Remember "Centrosome = Cell division Center". Chromosomes are the things being pulled, while the centrosome is the machine doing the pulling. Also note that higher plant cells form spindles without centrioles, which is why the question specifies animal cells.