Yes, protozoa does not have cell wall, and instead have a pellicle which is a flexible proteinaceous covering.

Yes, it is correct. The sempermeable membrane is permeable to solvent, but prevents the passage of solutes.

Yes, it is the correct answer. The process of preparation of food in plants does not take place with the help of osmosis. Photosynthesis takes place in the presence of sunlight with chlorophyll, water and air.

Yes, all are the examples of diffusion. It refers to the process by which molecules intermingle as a result of their kinetic energy of random motion.

Chromoplasts are coloured plastids. Their colour is green, orange, yellow, etc. due to the presence of carotenoids.

Osmotic solutions can cause osmosis when seperated from water by semi-permeable membrane. Water acts as solvent. So, water is not an osmotic solution.

Yes, they are the coloured plastids. They give colours to the fruits and flowers.

Mitochondria is called as 'power house of a cell.'

Yes, it is the correct answer. Food particles are not passed through plasma membrane by active transport. They use bulk transport mode.

Yes, the plant cell will shrink as exo-osmosis will take place.

No, mitochondria present in the cell help in liberating energy. They consume oxygen and liberate carbon dioxide.

Yes, it is the correct answer. It is present in the nucleus and have genetic information.

No nucleus is present in a prokaryotic cell and hereditary material lies free in cytoplasm. In eukaryotic cell, an organised nucleus is present.

Ribosomes are the smallest organelles in animals. They are found either in free state in the cytoplasm or attached to the surface of endoplasmic reticulum.

This statement is incorrect. Substance may pass through the membrane without or with expenditure of energy, i.e. passive or active transport, respectively.