Question

Which part of the plant excretes some waste substances into the soil?

Answer 1

the waste product of plants is stored in leaves and when leaves fall it mixes with soil

Answer 2

Plants store their wastes in leaves that are destined to fall or die off. This way the wastes in the leaves get excreted into the soil when the leaves fall off.

EXPLANATION:

Plants have a different method of excretion of waste products. The wastes of plants include oxygen and water. Oxygen is produced during photosynthesis and needs to be given to the atmosphere.

Similarly water as a waste product gets transpired. Leaves may store water as well as oxygen and when they fall on the soil, these waste products get added to the soil.