Pigmentation | MCQs

Explanation

Autumn leaves appear red and yellow because carotenoids are revealed.

This happens when chlorophyll breaks down in response to less sunlight.

Shown is a colour photograph of bright red and yellow flowers with green stems and leaves.

Explanation

Leaves with iron chlorosis will develop a yellow color with a network of dark green veins

iron chlorosis is a yellowing of plant leaves caused by iron deficiency,

It causes usually in high-pH soils (pH above 7.0)

Additional informational:

Iron is an essential nutrient for plants.

It functions to accept and donate electrons

They play important roles in the electron-transport chains of photosynthesis and respiration.

Explanation