Consider the following pairs : Vitamin Deficiency disease 1. Vitamin C : Scurvy 2. Vitamin D : Rickets 3. Vitamin E : Night blindness Which of the pairs given above is/are correctly matched?

Explicitly lists scurvy as an example of a deficiency disease studied in the curriculum, linking the disease category to nutrient lack.

A student could infer that specific nutrient deficiencies map to specific named diseases and therefore seek which vitamin is linked to scurvy.

Defines 'deficiency diseases' as diseases caused by lack of specific nutrients in the diet and groups them as non-communicable.

Using this rule, a student would treat scurvy as likely caused by lack of some dietary nutrient and look up which vitamin corresponds to scurvy.

Gives a clear example of a specific nutrient (iodine) deficiency causing a named disease (goitre), illustrating the pattern 'missing nutrient → specific disease'.

By analogy, a student can apply the same mapping to vitamins: identify the vitamin whose absence historically causes scurvy.

Notes that deficiencies of particular vitamins/minerals (iron, vitamin B12) cause specific health problems, reinforcing that different micronutrient deficits produce distinct diseases.

A student could use this pattern to narrow that scurvy should correspond to the absence of a particular vitamin and then check standard references for which one.

States that food provides vitamins as essential nutrients for growth, establishing that vitamins are the class of nutrients relevant to deficiency diseases.

Knowing scurvy is a deficiency disease involving vitamins, a student can focus on identifying which vitamin (from the class named) is linked to scurvy using common external sources.

States that some diseases are caused by lack of specific nutrients and labels these as 'deficiency diseases'.

A student can use this rule (nutrient X → specific deficiency disease Y) and then check which vitamin is classically linked to night blindness (using a standard nutrition source or textbook).

Explains that diseases may result from poor nutrition and gives the conceptual grouping of disease causes (including deficiency).

Use this general framework to ask which nutritional deficiency affects vision specifically and then verify whether vitamin E is the implicated nutrient.

Mentions examples of deficiency diseases (scurvy, anaemia, goitre), illustrating that particular nutrients are tied to particular disorders.

From these examples, a student can infer that identifying the correct vitamin for 'night blindness' requires matching the symptom to the known nutrient-deficiency pair.

Gives a concrete example that specific vitamins (iron, B12) cause particular health problems (blood-related), reinforcing the pattern nutrient → specific outcome.

Apply the same pattern to vision symptoms: look up which vitamin deficiency is linked to vision/night blindness rather than assuming vitamin E.

Describes non-nutritional causes of eye injury (e.g., UV-related 'snow blindness'), indicating that visual problems can have multiple causes, not only vitamin deficiencies.

Use this to remind a student to distinguish nutritional causes (vitamin deficiencies) from environmental/traumatic causes when assessing whether vitamin E could cause night blindness.