Select the correct statement from the given options -Plastids are found in all plant cells only.Most of the oxidative metabolism and ATP production occur in mitochondria.E.R. is localised cell organelle whereas golgi body is widespread in cytoplasm.Both (1) and (3)

The correct statement from the given options is "Most of the oxidative metabolism and ATP production occur in mitochondria."

Here's why:

1. "Plastids are found in all plant cells only." - This statement is incorrect. Plastids are indeed found in plant cells, but they are also found in algae, which are not plants.

2. "Most of the oxidative metabolism and ATP production occur in mitochondria." - This statement is correct. The mitochondria are the site of most of the cell's production of adenosine triphosphate (ATP), which is the main source of energy for cellular reactions. This process is known as oxidative metabolism because it involves the transfer of electrons from electron donors to electron acceptors, a process that releases energy.

3. "E.R. is localised cell organelle whereas golgi body is widespread in cytoplasm." - This statement is incorrect. Both the endoplasmic reticulum (E.R.) and the Golgi body (also known as the Golgi apparatus) are organelles that are found throughout the cytoplasm in eukaryotic cells. The E.R. is a network of membranous tubules and sacs that functions in protein synthesis and lipid metabolism, among other things. The Golgi body is a stack of flattened sacs that modifies, sorts, and packages proteins and lipids for transport.

4. "Both (1) and (3)" - This statement is incorrect because both statements 1 and 3 are incorrect.