2.4.2 The Need of Nutrients In Plants (Structured Questions)

Question 1:
A student conducted an experiment to study the effect of nutrient deficiency on the growth of pea seedling.
Diagram shows the result obtained after five days.

(a) Based on the Diagram, state one observation on the root of the seedling in culture solution without phosphorus. [1 mark]

(b) State one hypothesis for this experiment. [1 mark]

(c) State one constant variable in this experiment. [1 mark]

(d) Mark (√) in the boxed provided the element which is in the same group as phosphorus. [1 mark]

(e) Based on this experiment, state the operational definition for complete culture solution. [1 mark]

Growth of the root is retarded.

A complete culture solution is necessary for the fertile growth of the seedlings.

1. Volume of culture solution,
2. Initial stage of growth of the seedlings
(Any one)


A complete culture solution is defined operationally as a solution which contains all the nutrients needed for the fertile growth of plants .

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