Which of the following unicellular organism takes in food with the help of movement of cilia?

Hari had a problem with carbohydrate, protein and fat metabolism in his body:

a) Name the element he must include in his diet to overcome this problem.

b) Give one symptom of the deficiency disease caused in the above.

Stored energy in an object of weight 10 kg at 6m height from earth surface ($g = 9.8 m{s}^{–2}$):

Are you an autotroph or a heterotroph? Explain why? 

Identify and name the life process shown in the picture. Explain its importance.

Identify the characteristics of living things depicted in the following pictures.