Parenchyma cells are

State any three points of difference between your limb and heart muscles.

Fill in the blanks:
$(a)$ ............. are forms of complex tissue.
$(b)$ .............. have guard cells.
$(c)$ Cells of cork contain a chemical called .............
$(d)$ Husk of coconut is made of ............. tissue.
$(e)$ ............ gives flexibility in plants.
$(f)$ ............... and ............... are both conducting tissues.
$(g)$ Xylem transports ............... and ............... from soil.
$(h)$ Phloem transports ............... from ............... to other parts of the plant.

Animals of colder regions and fishes of cold water have a thicker layer of subcutaneous fat. Describe why?

Write the location and function of collenchyma tissue.

Give one reason for the following statements:
$(a)$ Blood is called a connective tissue.
$(b)$ Muscles are able to contract and relax to bring about movements.
$(c)$ Muscles of the heart are called involuntary muscles.