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PLANT KINGDOM
The Main Characteristics of Plants
1. Contain chlorophyll and carry out
   photosynthesis
2. Possess a cellulose cell wall
3. Are multicellular
Four groups in the plant kingdom


 1. BRYOPHYTES (mosses)
 2. PTERIDOPHYTES (ferns)
 3. CONIFERS (gymnosperms)
 4. ANGIOSPERMS
     (flowering plants)
BRYOPHYTES

  Mosses
PTERIDOPHYTES
(ferns)
CONIFERS (gymnosperms)
ANGIOSPERMS
(flowering plants)
Characteristics
      of
 BRYOPHYTES


   Mosses
Size of
 bryophytes
  is limited
 as they do not have
  vascular issue
  (phloem and xylem)

                           40 cm
 the tallest species is
  about 40 cm high
Bryophytes have:
 very simple structure (thallus), having no
  proper roots, leaves or stems


 hair-like structures
  (rhizoids) on the
  lower surface to
  absorb moisture
                                        Thallus
                                       Rhizoids
Bryophytes are found in damp &
           shady places
 Waxy cuticle is absent or if present, is
  inefficient
Bryophytes are mainly found in
           damp places
 as male sex cells need water to swim in
Bryophytes reproduce asexually
 by spores found in capsules
Characteristics of PTERIDOPHYTES




Ferns
Pteridophytes (ferns) have:
 Roots    because they have vascular
 Stems              tissue
 Leaves




                  [rhizome]
Ferns have
 leaf-like:


fronds
Ferns have better anchorage
          than mosses
Fern




                   Tiny rhizoids in moss.
Ferns can attain
   considerable
  sizes (20 m):
 as they have
  vascular tissue

 i.e. ferns have:
    support
    long-distance
      transport
Ferns can live in drier environments
       than mosses because:
 a waxy layer waterproofs the plant’s
  surfaces to reduce water loss




   Note shiny
 surface due to
  a waxy layer.
Ferns can live in drier environments
        than mosses BUT:
 grow best in damp, shady places
Ferns reproduce asexually by :
 spores found on fronds

A cluster of sporangia
    full of spores.
Ferns reproduce also sexually
 Ferns need water for reproduction like
  mosses




 Male sex cell of a fern. Flagella help it to
  swim towards the female sex organ.
Question: SEP, 2011
Give a biological explanation for each of the
following statements.
Ferns are much better adapted to life on land
than algae. (5)
Algae are not adapted to live on land for two
main reasons.
Algae have no protection against drying up and
lack supporting tissue.
Ferns have an efficient waxy cuticle and
vascular tissue to help in support and long-
distance transport of materials.




         Algae in aquarium.
Question: MAY, 2004
Bryophytes and ferns are two major groups of
the Plant kingdom. Complete the table below
by marking with a  if the characteristic given
applies for the particular group. Certain
characteristics may apply to both groups. (9)
Characteristic                        Bryophytes   Ferns
Live only in damp shady places.
Do not have proper roots but have
rhizoids.
Have a proper vascular system.
Can reproduce by means of spores.
Can grow to considerable sizes.
Liverworts are a member of this
group.
The leaves have a waxy layer to cut
down water loss.
Characteristic                           Bryophytes   Ferns
Live only in damp shady places.              
Do not have proper roots but have
rhizoids.
Have a proper vascular system.
Can reproduce by means of spores.
Can grow to considerable sizes.
Liverworts are a member of this group.
The leaves have a waxy layer to cut
down water loss.
Characteristic                        Bryophytes   Ferns
Live only in damp shady places.           
Do not have proper roots but have         
rhizoids.
Have a proper vascular system.
Can reproduce by means of spores.
Can grow to considerable sizes.
Liverworts are a member of this
group.
The leaves have a waxy layer to cut
down water loss.
Characteristic                        Bryophytes   Ferns
Live only in damp shady places.           
Do not have proper roots but have
rhizoids.
                                          

Have a proper vascular system.                       
Can reproduce by means of spores.
Can grow to considerable sizes.
Liverworts are a member of this
group.
The leaves have a waxy layer to cut
down water loss.
Characteristic                        Bryophytes   Ferns
Live only in damp shady places.           
Do not have proper roots but have
rhizoids.
                                          

Have a proper vascular system.                       
Can reproduce by means of spores.                   
Can grow to considerable sizes.
Liverworts are a member of this
group.
The leaves have a waxy layer to cut
down water loss.
Characteristic                        Bryophytes   Ferns
Live only in damp shady places.           
Do not have proper roots but have
rhizoids.
                                          

Have a proper vascular system.                       
Can reproduce by means of spores.                   
Can grow to considerable sizes.                     
Liverworts are a member of this
group.
The leaves have a waxy layer to cut
down water loss.
Characteristic                        Bryophytes   Ferns
Live only in damp shady places.           
Do not have proper roots but have
rhizoids.
                                          

Have a proper vascular system.                       
Can reproduce by means of spores.                   
Can grow to considerable sizes.                     
Liverworts are a member of this
                                          
group. [Not in syllabus]
The leaves have a waxy layer to cut
down water loss.
Characteristic                        Bryophytes   Ferns
Live only in damp shady places.           
Do not have proper roots but have
rhizoids.
                                          

Have a proper vascular system.                       
Can reproduce by means of spores.                   
Can grow to considerable sizes.                     
Liverworts are a member of this
                                          
group. [Not in syllabus]
The leaves have a waxy layer to cut                 
down water loss.
Question: MAY, 2010
1. Explain why bryophytes tend to be small
   plants while ferns are larger plants. (2)
   Bryophytes are small as they lack vascular
   tissue. This means that they cannot
   transport materials over long distances.
   Bryophytes cannot support themselves due
   to lack of xylem.
   Better anchorage in ferns by roots rather
   than rhizoids in bryophytes.
Question: MAY, 2010
2. Ferns colonise drier areas than bryophytes.
   Explain. (2)
   As ferns have an efficient waxy cuticle. The
   waxy cuticle is either absent or inefficient in
   bryophytes.
Characteristics of CONIFERS
 This group is also called gymnosperms
Conifers are large plants with:
         needle-like leaves
Most conifers are evergreen
Seeds of conifers are:
 produced in cones
 said to be naked, i.e. are not enclosed by a
  fruit
                               A naked seed
ANGIOSPERMS (flowering plants)
Angiosperms
 produce flowers and then seeds
 seeds are enclosed in a fruit
Angiosperms Range from:
herbs              massive trees
Two groups of flowering plants
               exist:
 Monocotyledonous
  e.g. grass, wheat, oat,
  palm tree

 Dicotyledonous
  e.g. poppy, peach tree,
  oak
Differences between:
  monocots & dicots
monocots             dicots
Long & slender leaf   Broad leaf
Parallel veins        Branching veins
monocots          dicots
Fibrous root   Main or Tap
   system      root system
monocots           dicots
                      Flower parts in
Flower parts in 3’s      4’s or 5’s
monocots                    dicots
One cotyledon in            Two cotyledons
 seed [maize]                in seed [pea]




                   Embryo
                    plant
Question: SEP, 1997

Fill in the table below using a tick () to mean
that the feature is present and a cross () to
show that the feature is absent. (6)
Monocot   Dicot
                                         plant    plant
Floral parts are arranged in threes
or in multiples of three.
Floral parts arranged in fours or
fives or multiples of these.
Leaves are the main photosynthetic
organs.
Have a tap root system.
Parallel veins found on leaves.
Plants lack vascular bundles in their
stems or roots.
Monocot   Dicot
                                         plant    plant
Floral parts are arranged in threes
or in multiples of three.                          
Floral parts arranged in fours or
fives or multiples of these.                      
Leaves are the main photosynthetic
organs.                                           
Have a tap root system.                           
Parallel veins found on leaves.                   
Plants lack vascular bundles in their
stems or roots.                                    
Plant classification

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Plant classification

  • 2. The Main Characteristics of Plants 1. Contain chlorophyll and carry out photosynthesis 2. Possess a cellulose cell wall 3. Are multicellular
  • 3. Four groups in the plant kingdom 1. BRYOPHYTES (mosses) 2. PTERIDOPHYTES (ferns) 3. CONIFERS (gymnosperms) 4. ANGIOSPERMS (flowering plants)
  • 8. Characteristics of BRYOPHYTES Mosses
  • 9. Size of bryophytes is limited  as they do not have vascular issue (phloem and xylem) 40 cm  the tallest species is about 40 cm high
  • 10. Bryophytes have:  very simple structure (thallus), having no proper roots, leaves or stems  hair-like structures (rhizoids) on the lower surface to absorb moisture Thallus Rhizoids
  • 11. Bryophytes are found in damp & shady places  Waxy cuticle is absent or if present, is inefficient
  • 12. Bryophytes are mainly found in damp places  as male sex cells need water to swim in
  • 13. Bryophytes reproduce asexually  by spores found in capsules
  • 15. Pteridophytes (ferns) have:  Roots because they have vascular  Stems tissue  Leaves [rhizome]
  • 17. Ferns have better anchorage than mosses Fern Tiny rhizoids in moss.
  • 18. Ferns can attain considerable sizes (20 m):  as they have vascular tissue  i.e. ferns have:  support  long-distance transport
  • 19. Ferns can live in drier environments than mosses because:  a waxy layer waterproofs the plant’s surfaces to reduce water loss Note shiny surface due to a waxy layer.
  • 20. Ferns can live in drier environments than mosses BUT:  grow best in damp, shady places
  • 21. Ferns reproduce asexually by :  spores found on fronds A cluster of sporangia full of spores.
  • 22. Ferns reproduce also sexually  Ferns need water for reproduction like mosses Male sex cell of a fern. Flagella help it to swim towards the female sex organ.
  • 23. Question: SEP, 2011 Give a biological explanation for each of the following statements. Ferns are much better adapted to life on land than algae. (5)
  • 24. Algae are not adapted to live on land for two main reasons. Algae have no protection against drying up and lack supporting tissue. Ferns have an efficient waxy cuticle and vascular tissue to help in support and long- distance transport of materials. Algae in aquarium.
  • 25. Question: MAY, 2004 Bryophytes and ferns are two major groups of the Plant kingdom. Complete the table below by marking with a  if the characteristic given applies for the particular group. Certain characteristics may apply to both groups. (9)
  • 26. Characteristic Bryophytes Ferns Live only in damp shady places. Do not have proper roots but have rhizoids. Have a proper vascular system. Can reproduce by means of spores. Can grow to considerable sizes. Liverworts are a member of this group. The leaves have a waxy layer to cut down water loss.
  • 27. Characteristic Bryophytes Ferns Live only in damp shady places.  Do not have proper roots but have rhizoids. Have a proper vascular system. Can reproduce by means of spores. Can grow to considerable sizes. Liverworts are a member of this group. The leaves have a waxy layer to cut down water loss.
  • 28. Characteristic Bryophytes Ferns Live only in damp shady places.  Do not have proper roots but have  rhizoids. Have a proper vascular system. Can reproduce by means of spores. Can grow to considerable sizes. Liverworts are a member of this group. The leaves have a waxy layer to cut down water loss.
  • 29. Characteristic Bryophytes Ferns Live only in damp shady places.  Do not have proper roots but have rhizoids.  Have a proper vascular system.  Can reproduce by means of spores. Can grow to considerable sizes. Liverworts are a member of this group. The leaves have a waxy layer to cut down water loss.
  • 30. Characteristic Bryophytes Ferns Live only in damp shady places.  Do not have proper roots but have rhizoids.  Have a proper vascular system.  Can reproduce by means of spores.   Can grow to considerable sizes. Liverworts are a member of this group. The leaves have a waxy layer to cut down water loss.
  • 31. Characteristic Bryophytes Ferns Live only in damp shady places.  Do not have proper roots but have rhizoids.  Have a proper vascular system.  Can reproduce by means of spores.   Can grow to considerable sizes.  Liverworts are a member of this group. The leaves have a waxy layer to cut down water loss.
  • 32. Characteristic Bryophytes Ferns Live only in damp shady places.  Do not have proper roots but have rhizoids.  Have a proper vascular system.  Can reproduce by means of spores.   Can grow to considerable sizes.  Liverworts are a member of this  group. [Not in syllabus] The leaves have a waxy layer to cut down water loss.
  • 33. Characteristic Bryophytes Ferns Live only in damp shady places.  Do not have proper roots but have rhizoids.  Have a proper vascular system.  Can reproduce by means of spores.   Can grow to considerable sizes.  Liverworts are a member of this  group. [Not in syllabus] The leaves have a waxy layer to cut  down water loss.
  • 34. Question: MAY, 2010 1. Explain why bryophytes tend to be small plants while ferns are larger plants. (2) Bryophytes are small as they lack vascular tissue. This means that they cannot transport materials over long distances. Bryophytes cannot support themselves due to lack of xylem. Better anchorage in ferns by roots rather than rhizoids in bryophytes.
  • 35. Question: MAY, 2010 2. Ferns colonise drier areas than bryophytes. Explain. (2) As ferns have an efficient waxy cuticle. The waxy cuticle is either absent or inefficient in bryophytes.
  • 36. Characteristics of CONIFERS  This group is also called gymnosperms
  • 37. Conifers are large plants with:  needle-like leaves
  • 38. Most conifers are evergreen
  • 39. Seeds of conifers are:  produced in cones  said to be naked, i.e. are not enclosed by a fruit A naked seed
  • 41. Angiosperms  produce flowers and then seeds  seeds are enclosed in a fruit
  • 43. Two groups of flowering plants exist:  Monocotyledonous e.g. grass, wheat, oat, palm tree  Dicotyledonous e.g. poppy, peach tree, oak
  • 44. Differences between: monocots & dicots
  • 45. monocots dicots Long & slender leaf Broad leaf Parallel veins Branching veins
  • 46. monocots dicots Fibrous root Main or Tap system root system
  • 47. monocots dicots Flower parts in Flower parts in 3’s 4’s or 5’s
  • 48. monocots dicots One cotyledon in Two cotyledons seed [maize] in seed [pea] Embryo plant
  • 49. Question: SEP, 1997 Fill in the table below using a tick () to mean that the feature is present and a cross () to show that the feature is absent. (6)
  • 50. Monocot Dicot plant plant Floral parts are arranged in threes or in multiples of three. Floral parts arranged in fours or fives or multiples of these. Leaves are the main photosynthetic organs. Have a tap root system. Parallel veins found on leaves. Plants lack vascular bundles in their stems or roots.
  • 51. Monocot Dicot plant plant Floral parts are arranged in threes or in multiples of three.   Floral parts arranged in fours or fives or multiples of these.   Leaves are the main photosynthetic organs.   Have a tap root system.   Parallel veins found on leaves.   Plants lack vascular bundles in their stems or roots.  