Science (086) — CBSE Class 10 board question

Formation of Lymph: When blood flows through capillaries, some plasma along with proteins leaks out into the spaces between cells, forming tissue fluid. This tissue fluid enters lymph capillaries and becomes lymph.

Function: Lymph carries digested and absorbed fat from the small intestine to the blood. It also drains excess tissue fluid back into the bloodstream.

The source passages provided do not cover this topic (they relate to reproduction), but this question is from the Life Processes chapter (Chapter 6 – Circulatory System). Examiners expect:

• One clear sentence on how lymph is formed (plasma leaking out of capillaries → tissue fluid → lymph).
• One clear sentence on its function (transport of fats/digested food; return of excess fluid to blood).
• For 2 marks, one mark is typically awarded for formation and one for function. Keep it concise.