Why is blood red and Lymph colourless or pale-yellow?

Functions that plants do not have, e.g. circulation.

Easy to carry around -- portable model of the heart.

Water from the roots to the leaves -- xylem.

Found in the walls of capillaries -- endothelial cells.

Where white blood cells are made -- bone marrow.

Lack of water or dehydration -- thirst.

Made by the spleen -- lymphocytes.

They have green pigment called chlorophyll -- plants.

The expanding gas bubble does work on -- surrounding water (in swim bladder).

They use oxygen and give off carbon dioxide -- animals.

Formed elements and plasma -- blood.

Red blood cells -- carry oxygen.

Lymph capillaries -- thin walls.

What will happen if a vein bursts -- blood oozes out slowly (low pressure).

Water and salt will enter the cell -- in hypotonic solution.

Which of these changes controls the environment of the cells -- homeostasis.

Can be dry and dirty -- air.

Why blood and lymph carry O2 and food to cells -- cells use O2 to burn food for energy.