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Natuurwetenskappe

Graad 5

Lewe en lewenswyse

Module 13

Voëls

Aktiwiteit:

Om kennis te neem van hoe enkele voëlsoorte verskillend aangepas is

[lu 2.2]

Wat maak die voëls eiesoortig?

  • Dit is die enigste dier met vere as huidbedekking. Die vere hou die voël warm en droog. Dit help ook die voël om te vlieg.
  • Die voorste ledemate van voëls (hulle “arms”) het verander om vlerke te vorm.
  • Voëls het lugsakke in hul bene wat hulle lig maak sodat hulle kan vlieg.
  • Voëls se borsbeen vorm ‘n kiel waaraan hul sterk vliegspiere vasgeheg is.
  • Voëls het deursigtige vliese oor hul oë sodat hulle hul oë tydens vlieg kan oophou.
  • Hul oë is besonder goed ontwikkel. Dink maar aan arende en valke.
  • Voëls kan nie ruik nie en is dus vir voeding geheel en al van hul smaaksintuie afhanklik.

INTERESSANTE FEITE I.V.M. VOËLS

  • Die volstruis is die grootste voëlsoort en lê die grootste eier.Volstruise word geteël vir hul eiers, vel, vere en vleis.Die volstruis skop sy vyand en kan ook seer pik.
  • Die Bloukransvoël: Nasionale voël van Suid-Afrika.
  • Die Kolgans: Die ou Egiptenare het hierdie voël as heilig beskou.

DIE POTE VAN VOËLS

In pare: Bestudeer die verskillende soorte pote en sê by watter voël hiernaas die pote pas. Motiveer waarom julle so besluit het deur na hul voedingswyse en leefwyse te verwys.

A BC

Jy kan gerus by die huis kyk na die snawels van voëls en hoe hulle by hul voedingswyse aangepas is.

Opdrag: groepwerk

Nie alle voëls bou neste nie.

  1. Noem een soort voël wat nie ‘n nes bou nie.
  1. Maak ‘n eenvoudige skets van die voël. Skets ook waar die eiers gelê word.
  2. Die meeste voëls bou neste. Waarom?
  1. Kies een soort voël wat jy in jou omgewing waarneem.
  1. Identifiseer die soort voël.
  1. Maak ‘n skets van die nes en voël.
  2. Gewaar jy die mannetjie en wyfie? Verskil hulle in voorkoms? Hoe? Hoekom?
  1. Hoe is voëls oor die algemeen aangepas om kos te kan soek en die kos te kan bekom?

Assessering

 

LU 2

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

Dit is duidelik wanneer die leerder:

2.1   betekenisvolle inligting onthou;

2.2   inligting kategoriseer;

2.3       inligting interpreteer.

 

Memorandum

A - muisvoëls, pote slegs om aan takke te kan klou.

B - arend of valk (alle roofvoëls), sterk kloue om prooi te kan vang.

C - eend, soos alle voëls wat in water swem: swemvlak wat die oppervlak vergroot.

Opdrag:

Groepwerk: Nie alle voëls bou neste nie

1. Nonnetjie uil; rooivalkie (ou neste); belangrikste: kiewiet

  1. Om eiers in te lê aan die begin van die lente. Dit word selde gebruik om in te slaap.

In pare

  • Bokkies, muise, rotte, molle, paddas, voëls, ens.
  • Molslang – vreet muise, molle wat ‘n las in die landerye is.
  • Hulle vreet rietrotte wat die suikerriet vreet.
  • Die eiervreter.
  • Ja – die koraalslang doen dit veral.
  • Eie navorsing.
  • Oë, reuk (tonge).

Aktiwiteit 3.6Om meer kennis op te doen oor die padda as voorbeeld van amfibieëLU 1.1

LU 1.2

Aktiwiteit 3.7Om eie kennis van visse uit te breiLU 1.2

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 5. OpenStax CNX. Sep 23, 2009 Download for free at http://cnx.org/content/col10980/1.2
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