science-10th-class-cbse-notes

Transportation

Human beings like other multicellular organism need a regular supply of food, oxygen etc., This function is performed by a circulatory system or Transport system.

blood circulation in Human Heart

Section view of the Human Heart

  • Double Circulation: Blood travels twice through the heart in one complete cycle of the body.
  • Pulmonary circulation: blood moves from the heart to the hugs and back the heart.
  • Systemic circulation: blood moves from the heart to rest of the body and back to the heart.

Blood

Lymph:

A yellowish fluid that escapes from the blood capillaries into the intercellular spaces. Lymph flows from the tissues to the heart assisting in transportation and destroying germs.

Lymph

Transportation in Plants :

There are two main conducting tissues in a plant.

  • Xylem
  • Phloem.

Transportation in Plants

Transpiration is the process by which plants lose water in the form of vapours.

Role of Transpiration

  • Absorption and upward movement of water and minerals by creating PULL.
  • Helps in temperature regulation in Plant.

Translocation:

Transport of food from leaves (food factory) to the different part of the plant is called Translocation.

 

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