Correct Answer: (c) 1 - cell wall; 2 - cell membrane; 3 - endoplasmic reticulum; 4 - nucleus; 5 - vacuole
Solution:In the given diagram, 1 is cell wall, 2 is cell membrane, 3 is endoplasmic reticulum, 4 is nucleus and 5 is vacuole. In plant cell, cell wall provides protection shape and support to the plant. The plant cell wall is mainly made up of the carbohydrates molecules such as cellulose and lignin. The cell wall surrounds the most adult plant cells, have large vacuole that takes up more than 70% of the cell's volume. The liquid inside the vacuole exerts an outward pressure on the cell. In plant cell, endoplasmic reticulum is located between cell membrane and nuclear membrane. It forms cytoskeleton by spreading in entire cytoplasm. A round nucleus is found in plant cell. The main function of nucleus is control of cell division, cell growth and production of ribosomes. It contains nucleolus and double nuclear membrane.