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Natuurwetenskappe

Graad 8

Omgewing en interaksies

Module 34

Rol van plante in 'n ekosisteem

Aktiwiteit 1:

Om die rol van plante te identifiseer

[lu 2.4]

Voltooi die kolom deur òf die beskrywing òf die funksie aan te dui. Voltooi die regter­kantste kolom deur van die sketse op die sketsblad op die regte plekke in te plak.

Skryf nou ’n paragraaf van 270 woorde oor die rol van plante in ekosisteme.

Kon jy basiese rolle onderskei?

[LU 2.4]

Sketsblad aktiwiteit 1

Sketsblad aktiwiteit 2

Aktiwiteit 2:

Om die rol van diere in ekosisteme te bespreek

[lu 2.2; 2.4; 3.2]

Voltooi die kolom deur óf die beskrywing óf die funksie aan te dui. Voltooi die regterkantste kolom deur van die sketse op die sketsbladsy op die regte plekke in te plak.

Voor- en Nadele van Diere

Is alle diere voordelig vir die omgewing?

Kan diere skadelik wees vir die omgewing?

Skryf die sinvolle aspekte wat deur klaslede genoem word neer.

Assessering van klasbespreking. Kon jy nadele lys? [LU 3.2]

Assessering

LU 2

Wetenskaplike Kennis

Die leerder ken, interpreteer en pas wetenskaplike, tegnologiese en omgewingskennis toe.

Dit is bewys as die leerder:

2.1 sinvolle inligting kan onthou;

2.2 inligting in kategorieë kan plaas;

2.3 inligting kan interpreteer;

2.4 kennis kan toepas.

LU 3

Wetenskap, die Gemeenskap en die Omgewing

Die leerder is in staat om begrip van die onderlinge verband tussen wetenskap en tegnologie, die samelewing en die omgewing te toon.

Dit is bewys as die leerder:

3.1 wetenskap as ‘n menslike aktiwiteit kan verstaan;

3.2 volhoubare gebruik van die aarde se hulpbronne verstaan.

Memorandum

Aktiwiteit: rol van plante in ’n ekosisteem

Paragraaf oor rol van plante

Oefen die leerder se vermoë om skriftelik te kommunikeer deur die inhou van voorafgaande tabel in paragraafvorm te stel en daarop uit te brei.

Aktiwiteit: rol van diere in ’n ekosisteem

KLASBESPREKING

Kan diere skadelik wees vir die omgewing?

  • Ja – veral oorbeweiding lei tot verlies van plante wat lei tot erosie. Uitheemse diere kan skadelik wees aangesien hulle natuurlike vyande nie teenwoordig is nie en hulle getalle dus in so ’n mate groei dat hulle die inheemse diere verdring en oorneem. Dit kan tot die uitroeiing van bepaalde dier- en plantsoorte lei.

Questions & Answers

how does Neisseria cause meningitis
Nyibol Reply
what is microbiologist
Muhammad Reply
what is errata
Muhammad
is the branch of biology that deals with the study of microorganisms.
Ntefuni Reply
What is microbiology
Mercy Reply
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
Ziyad Reply
How bacteria create energy to survive?
Muhamad Reply
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
Aminu Reply
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Esinniobiwa Reply
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Shu Reply
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Micheal Reply
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
what is cell
faisal Reply
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
ok
Innocent
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
Micheal Reply
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
en français
Adama
which site have a normal flora
ESTHER Reply
Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
Safaa
skin
Asiina
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
all
Tesfaye
by fussion
Asiina
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
what is inflammation
Shelly Reply
part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Micheal Reply
Binomial nomenclature
adeolu
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Source:  OpenStax, Natuurwetenskappe graad 8. OpenStax CNX. Sep 12, 2009 Download for free at http://cnx.org/content/col11049/1.1
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