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Q. Which of the following statements is not true for stomatal apparatus?

NEETNEET 2013Transport in Plants

Solution:

Stomata are present on the lower surface of the leaves, these help in the gaseous exchange. Stomata are surrounded by gaurd cells which are in turn surrounded by subsidiary cells, therefore their inner wall is thicker than the outer layer. However, Guard cell do posses chloroplast but mitochondria are absent. So, the correct option is 'Guard cells invariably possess chloroplasts and mitochondria.'