Comparison between saturated and unsaturated fatty acids

Saturated fatty acids	Unsaturated fatty acids
1.         They do not possess any double bond in their carbon chains	They possess one or more double bonds in their carbon chains
2.         They are straight chains	They have bend or kink at the double bond
3.         They have higher melting point than the unsaturated fatty acids	Lower melting point
4.         They are solid at ordinary temperature	They are liquid at ordinary temperature
5.         They occur in most animal fats	They occur in most plant fats
6.         Hydrogenation has no effect on saturated fatty acids	Hydrogenation convert unsaturated fatty acids into saturated ones

Read More

Comparison between dicot leaf and monocot leaf

 

Dicot leaf	Monocot leaf
1.      Cuticle thick at upper epidermis and thin at lower epidermis	Uniform cuticle on both the surface
2.      Stomata are more on lower surface	Equal number of stomata on either side
3.      Mesophyll is differentiated into palisade parenchyma and spongy parenchyma	Mesophyll is not differentiated into palisade and spongy parenchyma
4.      Bulliform cells are absent in the epidermis	Bulliform cells are present in upper epidermis

Read More

Comparison between dicot stem and monocot stem

Dicot stem	Monocot stem
1.      Ground tissue is differentiated into cortex, endodermis, pericycle, stele and pith	Undifferentiated ground tissue
2.      Vascular bundles are limited in number and are arranged in a broken ring	Vascular bundles are numerous in number and are scattered in the ground tissue
3.      Vascular bundles are open	Vascular bundles are closed
4.      Collenchymatous hypodermis	Sclerenchymatous hypodermis
5.      Sclerenchymatous bundle cap is present	Bundle cap is absent
6.      Bundle sheath is absent	Sclerenchymatous bundle sheath  is present
7.      Protoxylem lacuna is absent	Protoxylem lacuna is present
8.      Secondary growth is present	Secondary growth is absent

Read More

Comparison between dicot root and monocot root

Dicot root	Monocot root
1.      Limited number (2 to 6) of Xylem and phloem groups	Numerous xylem and phloem groups (above 6)
2.      Diarch to hexarch	Polyarch
3.      Xylem cells are polygonal in shape	Xylem cells are rounded in shape
4.      Pith is absent or reduced	Pith is large
5.      Secondary growth is present	Secondary growth is absent

Read More

Comparison between plant cell and animal cell

Plant cell	Animal cell
1.        Usually larger in size	Comparatively smaller in size
2.        It is enclosed by a rigid cell wall in addition to plasma membrane	No cell wall
3.        It cannot change its shape	It can often change in shape
4.        Plastids are present. Plant cells exposed to sunlight contain chloroplast	Plastids are usually absent
5.        A mature plant cell contains a large central vacuole	An animal cell often possesses many small vacuole
6.        Nucleus lies on one side in the peripheral cytoplasm	Nucleus usually lies in the centre
7.        Centrioles are usually absent except in motile cells of lower plants	Centrioles are practically present in all animal cells
8.        Lysosomes are rare	Lysosomes are always present
9.        Glyoxysomes may be present	Absent
10.      Tight junctions and desmosomes are lacking	They are present
11.      Reserve food is generally in the form of starch	Reserve food is usually glycogen
12.      It can synthesize all the amino acids, coenzymes and vitamins required by them	It cannot synthesize all the amino acids, coenzymes and vitamins required by them
13.      Spindle formed during cell division is anastral i.e. without asters at esthe poles	Spindle formed during cell division is amphiastral i.e. has an aster at each pole
14.      Cytokinesis occurs by cell plate method	Cytokinesis occurs by constriction or furrowing
15.      Plant cell does not burst if placed in hypotonic solution due to the presence of the cell wall	Animal cells lacking contractile vacuoles usually burst, if placed in hypotonic solution

Read More