When an insect is feeding on a plant, which types of tissue are at work to protect the plant and it heal from injury?
sclerenchyma and collenchyma
parenchyma and collenchyma
vascular and dermal
ground and parenchyma

The best answer is - vascular and dermal . Dermal tissue in plants forms the first line of defense against physical damage such as is caused by insects, and infection. Dermal tissue covers the outside of the plant except in woody shrubs and trees because trees have bark. The vascular tissue in plants transport water and nutrients which are essential in cell repair and growth. Thus the nutrients supplied through vascular tissues in plants are important to the restoration of damaged cells.

A. radioactive dating

Mutations are changes in the dna