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Natuurwetenskappe

Lewe en lewenswyse

Opvoeders afdeling

Memorandum

  • Die tuinslak
  • Seekat en mossel
  • Spiervoet
  • twee paar voelers en twee oë
  • Die slak beweeg met golfbewegings in die spiervoet.
  • Die mond is T-vormig, aan die onderkant van die kop.

Opdragte:

1. Die plante na-aan die grondoppervlak sou waarskynlik welig groei. Die diere wat van slakke leef, soos honderdpote, voëls en muise, sou moontlik ander weivelde soek.

2.

Erdwurm Ronde langwerpige liggaam maak dit moontlik om gate in grond te grawe, plantreste in te dra en saam met grond te eet Leef in vogtige grond om vel vogtig te hou Stelsel van buisies waarmee die hoeveelheid water wat opgeneem en afgegee word, beheer word
Sprinkaan Kan beweeg om voedsel te soek. Bytende monddele om plantmateriaal fyn te sny Buisies vertak in liggaam, voorsien 'n vogtige gaswis-selingsoppervlak Uitwendige skelet verhoed waterverlies, kry vog saam met plantmateriaal in
Spinnekop ens. Leerders maak bloot 'n opsomming van inligting in teks.
Krap
Slak

3. Navorsingsopdrag: assesseer in terme van die raamwerk wat in die module verskaf word.

Leerder afdeling

Inhoud

Aktiwiteit: om die tuinslak te ondersoek en die aanpassing van enkele invertebrate ten opsigte van oorlewing te vergelyk [lu 1.1, lu 1.2, lu 1.3, lu 2.3, lu 2.4]

Die tuinslak

Die slak behoort tot die groep weekdiere of Mollusca . Kan jy nog onthou watter ander diere aan hierdie groep behoort?

Die _____________________________ en ________________________________

Jy sal dit nie moeilik vind om ‘n tuinslak in die hande te kry nie. Kyk na sy uitwendige bou en probeer om die volgende vrae te beantwoord:

Die grootste deel van die liggaam bestaan uit ‘n ______________________________ -voet.

Aan die kop is twee ___________________________________ en twee ____________________________________________________________________

Sit die slak op ‘n glasplaat neer en wanneer hy begin beweeg, kyk van onder af deur die glas en beskryf wat jy sien (hoe hy beweeg).

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

Kan jy sy mond sien? Beskryf. ___________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_______________________________________________________________________________________________________________________________________________________________________________________________________________

Lig die slak op en probeer om langs die liggaam in die skulp in te kyk. Kan jy ‘n opening sien? Dit is die asemhalingsopening.

Questions & Answers

what is phylogeny
Odigie Reply
evolutionary history and relationship of an organism or group of organisms
AI-Robot
ok
Deng
what is biology
Hajah Reply
the study of living organisms and their interactions with one another and their environments
AI-Robot
what is biology
Victoria Reply
HOW CAN MAN ORGAN FUNCTION
Alfred Reply
the diagram of the digestive system
Assiatu Reply
allimentary cannel
Ogenrwot
How does twins formed
William Reply
They formed in two ways first when one sperm and one egg are splited by mitosis or two sperm and two eggs join together
Oluwatobi
what is genetics
Josephine Reply
Genetics is the study of heredity
Misack
how does twins formed?
Misack
What is manual
Hassan Reply
discuss biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles
Joseph Reply
what is biology
Yousuf Reply
the study of living organisms and their interactions with one another and their environment.
Wine
discuss the biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles in an essay form
Joseph Reply
what is the blood cells
Shaker Reply
list any five characteristics of the blood cells
Shaker
lack electricity and its more savely than electronic microscope because its naturally by using of light
Abdullahi Reply
advantage of electronic microscope is easily and clearly while disadvantage is dangerous because its electronic. advantage of light microscope is savely and naturally by sun while disadvantage is not easily,means its not sharp and not clear
Abdullahi
cell theory state that every organisms composed of one or more cell,cell is the basic unit of life
Abdullahi
is like gone fail us
DENG
cells is the basic structure and functions of all living things
Ramadan
What is classification
ISCONT Reply
is organisms that are similar into groups called tara
Yamosa
in what situation (s) would be the use of a scanning electron microscope be ideal and why?
Kenna Reply
A scanning electron microscope (SEM) is ideal for situations requiring high-resolution imaging of surfaces. It is commonly used in materials science, biology, and geology to examine the topography and composition of samples at a nanoscale level. SEM is particularly useful for studying fine details,
Hilary
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Source:  OpenStax, Natuurwetenskappe graad 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11078/1.1
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