Which factor determines the direction of movement of main root and stem?

What is the main factor that determines the saturation of haemoglobin with oxygen?

Which are main factors to determine water potential.

Stems and roots

_____ movement is called directional movement.

What are the main functions of stem?

Which of the following helps in the upward movement of water and dissolved nutrients from the roots to leaves through the stem?

Which of the following helps in the upward movement of water and dissolved minerals from the roots to the leaves through the stem ?