Tissues, Organs and Organ Systems in Plants and Animals — BIOLOGY STD 7 — Question

Name : Apical meristematic tissue
Location : Root tip and shoot tip
Function : Helps, plant to grow and gain height
(d) Adipose tissue – Present around internal organs and beneath the skin, it stores energy as fat, cushions and insulates the body and provides protective covering around the organs.
(ii) Skeletal tissue – It is the solid connective tissue which provides support to the body and forms endoskeleton (internal skeleton) of vertebrates. It is of two types –
(a) Cartilage – It relieves the bones of shocks and reduces friction between them.
(b) Bone – The are strong and hard. Red blood cells and white blood cells are formed in the bone marrow.
(iii) Fluid connective tissue – It is of two types –
(a) Blood – It has a straw-coloured fluid matrix called plasma in which three types of cells are present-erythrocytes (Red blood cell, RBC), leucocytes (white blood cell, WBC) and thrombocytes (platelets). RBCs cariy oxygen and carbon dioxide to and from various body parts to the lungs. WBCs provide protection from foreign bodies. Platelets help in blood clotting.
(b) Lymph – It lacks RBCs and play important role in protecting body against infection. Connective tissue is different from other tissues because it has cells which are separated from each other. The space between the cells is composed of different intercellular substances that form the matrix or ground substance. The living cells produce the non-living matrix, which could be a liquid (in blood), semi-solid (connective tissue proper) or solid (bone).