Question

it is a common observation after a plant is sprayed with heavy dose of insecticide yellowish areas develop on the leaves. investigation shows that the cells have died. since insecticides are not poisonous to plants try giving reasons why the cells have died

Answer 1

if we get plant over dose that is the reason cells have died

Answer 2

Answer:

There are two reasons for so happening.

Explanation:

1. The insecticides act like oils, which cut air supply. When insecticides are sprayed, they also drop on the stomata and cut much of their CO2 supply. The leaves need CO2 to make food and thus, it affects them badly. When plants don't process food, they gradually die. So, in this scenario, you can consider the yellowness as the beginning of the plant's slow death.

2. Athough insecticides are not poisonous, they still have toxic chemicals which affect the chlorophyll in the leaves. this results in the leaves losing their green colour.