Answer A, they lack locomotor organs.
Lack of exercise
High blood pressure
Diabetes
Obesity and high cholesterol
Answer:
Due to its high magnification power.
Explanation:
A scientist used a light microscope to view an algal cells because light microscope is able to magnify objects up to about a thousand times. Various cellular organelles, such as nuclei, chloroplasts, and mitochondria etc can also be seen clearly with the help of light microscope so that's why scientist used light microscope to study algal cells.
(a) is false since antibodies are produced by body humoral immune system