LIFE SCIENCE

Detailed explanation-1: -Phagocytic white blood cells are involved in removing the antigens and pathogens from the body. They contain many organelles, including lysosomes, and hence, can be used for the study of lysosomes. Thus, the option is correct.

Detailed explanation-2: -Hence, the correct answer is ‘Phagocytic white blood cell’.

Detailed explanation-3: -Lysosomes are found in all animal cells, but are most numerous in disease-fighting cells, such as white blood cells. This is because white blood cells must digest more material than most other types of cells in their quest to battle bacteria, viruses, and other foreign intruders.

Detailed explanation-4: -They break down excess or worn-out cell parts. They may be used to destroy invading viruses and bacteria. If the cell is damaged beyond repair, lysosomes can help it to self-destruct in a process called programmed cell death, or apoptosis.

Detailed explanation-5: -Lysosome‐related organelles in cytotoxic leukocytes These lysosome‐related organelles (LROs) include the granules of cytotoxic T cells, NK cells, mast cells, and eosinophils.