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  4. Om die tuinslak te ondersoek en

1.11 Om die tuinslak te ondersoek en die aanpassing van enkele

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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

differentiate between demand and supply giving examples
Lambiv Reply
differentiated between demand and supply using examples
Lambiv
what is labour ?
Lambiv
how will I do?
Venny Reply
how is the graph works?I don't fully understand
Rezat Reply
information
Eliyee
devaluation
Eliyee
t
WARKISA
hi guys good evening to all
Lambiv
multiple choice question
Aster Reply
appreciation
Eliyee
explain perfect market
Lindiwe Reply
In economics, a perfect market refers to a theoretical construct where all participants have perfect information, goods are homogenous, there are no barriers to entry or exit, and prices are determined solely by supply and demand. It's an idealized model used for analysis,
Ezea
What is ceteris paribus?
Shukri Reply
other things being equal
AI-Robot
When MP₁ becomes negative, TP start to decline. Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 • Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of lab
Kelo
Extuples Suppose that the short-run production function of certain cut-flower firm is given by: Q=4KL-0.6K2 - 0.112 • Where is quantity of cut flower produced, I is labour input and K is fixed capital input (K-5). Determine the average product of labour (APL) and marginal product of labour (MPL)
Kelo
yes,thank you
Shukri
Can I ask you other question?
Shukri
what is monopoly mean?
Habtamu Reply
What is different between quantity demand and demand?
Shukri Reply
Quantity demanded refers to the specific amount of a good or service that consumers are willing and able to purchase at a give price and within a specific time period. Demand, on the other hand, is a broader concept that encompasses the entire relationship between price and quantity demanded
Ezea
ok
Shukri
how do you save a country economic situation when it's falling apart
Lilia Reply
what is the difference between economic growth and development
Fiker Reply
Economic growth as an increase in the production and consumption of goods and services within an economy.but Economic development as a broader concept that encompasses not only economic growth but also social & human well being.
Shukri
production function means
Jabir
What do you think is more important to focus on when considering inequality ?
Abdisa Reply
any question about economics?
Awais Reply
sir...I just want to ask one question... Define the term contract curve? if you are free please help me to find this answer 🙏
Asui
it is a curve that we get after connecting the pareto optimal combinations of two consumers after their mutually beneficial trade offs
Awais
thank you so much 👍 sir
Asui
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities, where neither p
Cornelius
In economics, the contract curve refers to the set of points in an Edgeworth box diagram where both parties involved in a trade cannot be made better off without making one of them worse off. It represents the Pareto efficient allocations of goods between two individuals or entities,
Cornelius
Suppose a consumer consuming two commodities X and Y has The following utility function u=X0.4 Y0.6. If the price of the X and Y are 2 and 3 respectively and income Constraint is birr 50. A,Calculate quantities of x and y which maximize utility. B,Calculate value of Lagrange multiplier. C,Calculate quantities of X and Y consumed with a given price. D,alculate optimum level of output .
Feyisa Reply
Answer
Feyisa
c
Jabir
the market for lemon has 10 potential consumers, each having an individual demand curve p=101-10Qi, where p is price in dollar's per cup and Qi is the number of cups demanded per week by the i th consumer.Find the market demand curve using algebra. Draw an individual demand curve and the market dema
Gsbwnw Reply
suppose the production function is given by ( L, K)=L¼K¾.assuming capital is fixed find APL and MPL. consider the following short run production function:Q=6L²-0.4L³ a) find the value of L that maximizes output b)find the value of L that maximizes marginal product
Abdureman
types of unemployment
Yomi Reply
What is the difference between perfect competition and monopolistic competition?
Mohammed
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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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