Biology 0610 · IGCSE · Excretion in humans

Excretion in humans — practice question

Fig. 2.1 illustrates the system responsible for eliminating surplus water from the body.
(a(i))[1]

Identify the letter on Fig. 2.1 that marks the place where urine is stored.

(a(ii))[1]

State the name of the organ that serves as the storage site for urine.

(b)[2]

Describe what each of these structures does. ureter ... urethra ...

(c(i))[1]

Circle the substance that is decomposed to produce urea. amino acids, fatty acids, hydrochloric acid, lactic acid

(c(ii))[1]

State the name of the organ responsible for producing urea.

(d)[2]

Calculate the four missing values in Table 2.1. Record your answers on the dotted lines in Table 2.1.

(e)[2]

A person drinks a large volume of water but does not exercise. Describe the effect that increased water intake has on the volume and concentration of urine produced.

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