Fill in the blanks with suitable words :
(a) Cells were first observed in cork by ………………… in 1665.
(b) What is brick to a house is …………. To an organism.
(c) The cytoplasm and nucleus make up the ……………………………….
(d) The shape and size of a cell is related to its ………………………….
(e) The bacteria cells are ……….. to ………………micrometer in length.
(f) The smallest unit of life is a ………
(g) Tissues make up ………………..
(h) Organ systems make up an …………
(i) Cells make up …………………………………
(j) Organs make up …………………………..