Structural Organisation In Animals

Question 1

What does gap junctions facilitate

Answer 1

The cells to communicate with each other by connecting the cytoplasm of adjoining cells for rapid transfer of ions, small molecules and sometimes big molecules

Question 2

Junctions

Answer 2

Specialised junctions provide structural and functional links between it’s individual cells

Question 3

Fibres of structural proteins

Answer 3

Collagen or elastin

Question 4

Connective tissues except blood secretes

Answer 4

1.collagen or elastin
2.modified polysaccharides

Question 5

Loose connective tissue has

Answer 5

Cells n fibres loosely arranged in a semi-fluid ground substance

Question 6

Cells of cartilage

Answer 6

Chondrocytes

Question 7

Describe intercellular material of cartilage

Answer 7

Solid, pliable and resists compression

Question 8

Bone cells

Answer 8

Osteocytes

Question 9

Deacribe bone ground substance

Answer 9

Hard, non-pliable rich in calcium salts and collagen fibres which give bone it’s strength

Question 10

Blood is a

Answer 10

Fluid connective tissue

Question 11

Function of blood

Answer 11

Main circulatory fluid that helps in the transport of various substance

Question 12

Common Indian earthworms are

Answer 12

Pheretima and Lumbricus

Question 13

Internal median fold of dorsal wall after 26th segment except the last 23-25 segments

Answer 13

Typhlosole

Question 14

What is cardiac muscle tissue?

Answer 14

Contractile tissue present only in tge heart