Biology 0610 · IGCSE · Conservation

Conservation — practice question

Fig. 2.1 illustrates a scientific project in which tomato plants and fish are raised together inside the same glasshouse. The labels in Fig. 2.1 state: water vapour is condensed, collected and returned to the fish tank; fish are fed on plant-based food; fish waste products are filtered and used as fertiliser for tomato plants; temperature kept at 27 ^{\circ}C; sunlight; solar panels supply power for heating; tomato plants give off water vapour; glasshouse.
(a)[1]

Identify the water-cycle process that does not occur in this project.

(b(i))[1]

Name the process by which the plants release water vapour.

(b(ii))[1]

State the process name by which the fish release water and urea as waste products.

(c(i))[1]

State the term for animals that feed on plants.

(c(ii))[1]

Define pathogen.

(d)[3]

Describe and explain two ways in which growing tomatoes in this project could save the grower money.

(e(i))[2]

Define sustainable resource.

(e(ii))[1]

Suggest why raising a fish species in tanks may help prevent the species from becoming extinct.

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