Loose parenchyma cells rupturing the epidermis and forming a lens shaped opening in bark - Spongy parenchyma

Large colorless empty cells in the epidermis of grass leaves - Subsidiary cells

In dicot leaves, vascular bundles are surrounded by large thick-walled cells - Conjunctive tissue

Cells of medullary rays that form part of cambial ring - Interfascicular cambium

Sapwood is involved in conduction of water and minerals from root to leaf

Sapwood is the innermost secondary xylem and is lighter in colour

Due to deposition of tannins, resins, oils etc., heart wood is dark in colour

Heart wood does not conduct water but gives mechanical support

Primary roots

Prop roots

Lateral roots

Fibrous roots