1.5 DOMAIN EUKARYA: KINGDOM FUNGI...ii.Pinophyta/ Coniferophyta (Pinus sp.) iii.Ginkgophyta (Ginkgo...
Transcript of 1.5 DOMAIN EUKARYA: KINGDOM FUNGI...ii.Pinophyta/ Coniferophyta (Pinus sp.) iii.Ginkgophyta (Ginkgo...
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1.5 DOMAIN EUKARYA:
KINGDOM FUNGI
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LEARNING OUTCOMES
a) State the unique characteristics of Fungi
b) State the classification of Fungi phyla based on the spore-bearing structure:
• Zygomycota (Rhizopus sp.),
• Ascomycota (Penicillium sp.),
• Basidiomycota (Agaricus sp.)
c) State the importance of Fungi:
i. Decomposer
ii. Symbionts
iii. Pathogens
iv. Commercial importance in food production (fermented food)
v. Pharmaceutical (penicillin)
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a) The unique characteristics of
Fungi
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3
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1Eukaryotic Do not contain
chlorophyll
absorptive
heterotrophs
Release digestive
enzymes
Store food
energy as
glycogen
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7
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910
6Heterotrophic
ParasiticSaprophytic
Mutualist
decomposers
& recyclers
Most are
multicellular
Cell walls are
made of chitin
Reproduce
both asexually
& sexually
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b) The classification of Fungi phyla
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• Phylum Zygomycota (Rhizopus sp.)
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• Phylum Ascomycota (Penicillium sp.)
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• Phylum Basidiomycota(Agaricus sp.)
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(i) Decomposer
(ii) Symbionts
(iv) Commercial importance in food production
Fermented food(iii) Pathogens
(v) Pharmaceutical (Penicillin)C) The importance of Fungi
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1.6. Domain Eukarya:
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• (a) Describe alternation of generation as the
unique characteristics of Plantae.
• (b) State the classification of Plantae into four
groups :-
i. Bryophytes iii. Gymnosperms
ii.Pteridophytes iv. Angiosperms
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a) The alternation of generation as the unique
characteristics of Plantae
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b) The classification of Plantae into four groups
Non-vascular
Vascular
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(a)Describe the unique characteristics of bryophytes.
(b)State the classification of Bryophytes into 3 divisions/
phyla :-
i. Phylum Hepatophyta (Marchantia sp.)
ii. Phylum Bryophyta (Polytrichum sp.)
iii.Phylum Anthocerophyta (Anthoceros sp.)
(c) State the terrestrial adaptation for bryophytes
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Simplest
group of land
plants Live in damp, shady
places
Restricted in size
No true roots, stems and leaves
Alternation of generations
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b) Division Hepatophyta(Marchantia sp.)
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Division Hepatophyta(Marchantia sp.)
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Division Bryophyta(Polytrichum sp.)
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Division Anthocerophyta(Anthoceros sp.)
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A sterile jacket developed around
antheridia and archaegonia which
prevent them from drying out
Delicate sex cells must be protected by gametangium
Presence of stomata facilitate the
movement of gasses such as CO2
and O2 in and out through the cuticle
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(a) Describe the unique characteristics of
pteridophytes
(b) State the classification of pteridophytes into two divisions/
phyla :-
i. Phylum Lycopodiophyta/ Lycophyta (Lycopodium
sp., Selaginella sp.)
ii. Phylum Pteridophyta (Dryopteris sp.)
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Has true
roots, stems
and leaves
Non-flowering
plants
seedless
Vascular
plant
Photosynthetic
Alternation of generations
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(a) Describe the unique characteristics of
gymnosperms.
(b) State the classification of gymnosperms into four
divisions :-
i. Cycadophyta (Cycas sp.)
ii.Pinophyta/ Coniferophyta (Pinus sp.)
iii.Ginkgophyta (Ginkgo sp.)
iv.Gnetophyta (Gnetum sp.)
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Reproductive
organs are
usually bear
in cones.
Heterosporous
Ovules (modified megasporangium)
Non-flowering
plants
Naked seed
Alternation of generations
Have vascular tissues
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Female
Male
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Female
Male
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Female strobilus
Male strobilus
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(a) Describe the unique characteristics of
Angiosperms (Division/ Phylum Anthophyta)
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flowering
plants
Seed plant
Alternation of generations
Complete vascular tissues
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1.6.6 EVOLUTIONARY RELATIONSHIPS AMONG GROUPS IN THE PLANT KINGDOM
BRYOPHYTES PTERIDOPHYTES GYMNOSPERMS ANGIOSPERMS
Size Very small Medium Large Large
Dominance of gametophytes and
sporophytes
Gametophyte Sporophyte Sporophyte Sporophyte
Dependence of gametophytes and
sporophytes
Sporophyte depends on the gametophyte for the
rest of its life
Sporophyte depends on the gametophyte only
at the early development
Sporophyte is totally independent
Sporophyte is totally independent
Water dependence in fertilization
Needed Needed Not needed Not needed
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1.6.6 EVOLUTIONARY RELATIONSHIPS AMONG GROUPS IN THE PLANT KINGDOM
BRYOPHYTES PTERIDOPHYTES GYMNOSPERMS ANGIOSPERMS
Presence of vascular tissues
Absent Simple vascular tissues Present
Xylem – tracheids only
Phloem – Sieve tubes with no companion cells
Present
Xylem – tracheids and vessels
Phloem- Sieve tubes and companion cells
Embryo protection
Not protected Not protected Protected by the seed Protected by the seed