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5. THE FUNDAMENTAL UNIT OF LIFE
easy
Who discovered cells, and how ?
Option A
Option B
Option C
Option D
Solution
Cell was discovered by Robert Hooke with the help of his selfdesigned microscope. He examined a thin slice of cork and saw that the cork resembled the structure of a honey comb consisting of many compartments.
Standard 9
Science
Similar Questions
Full in the gaps in the following table illustrating differences between prokaryotic and eukaryotic cells.
| Prokaryotic Cell | Eukaryotic Cell |
| $1.$ Size : generally small $(1-10 \,\mu \,m )$ $1 \,\mu \,m =10^{-6} \,m$ |
$1.$ Size : generally large $(5-100 \,\mu \,m )$ |
| $2.$ Nuclear region : ………………. and …………… | $2.$ Nuclear region: well defined and surrounded by a nuclear membrane |
| $3.$ Chromosome : single | $3.$ More than one chromosome |
| $4.$ Membrane-bound cell organelles absent | $4.$ ……………………. |
easy
