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Natural science

Grade 4

Life and way of living

Module 9

Compare the growth of plants in various circumstances


To compare the growth of plants in various circumstances [lo 1.1, 1.2, 1.3]

The habitat of a plant is determined by the soil type and the climatic region where it grows best. Some plants prefer dry soil in a hot area and therefore do not need much water for growth. Other plants, again, like wet soil in cold regions because they need much water to survive.

Let us grow a plant: bring a variety of seeds to school. Plant them in well-drained soil in plant trays (six-pack).

  • Work in groups of six learners. Each learner should bring a plant tray and a few seeds. Try maize, bean and sunflower seeds – they grow quickly.
  • Use six plant trays for 12 seeds, planting two seeds in each bowl.
  • Place five of the plant trays in a sunny spot and water them regularly.
  • Place the sixth tray in a dark corner and do not water it.
  • Use the remaining seeds to create a collage.

Once the plant has grown well, you can remove it from the soil to compare it with your partner’s plant. The best plants can be dried between sheets of paper from old telephone directories. When they are ready, you may paste a plant on a sheet of paper and write captions (neatly) to identify the different parts, e.g.: roots, stem, leaves, flower.

Next we will compare our plants with those that have not had water and sunlight. Draw these in the spaces below and write your conclusion in the space that is provided.

Plant with sunlight and wate Plant without sunlight and water


LEARNING OUTCOME 1: SCIENTIFIC INVESTIGATIONSThe learner will be able to act confidently on curiosity about natural phenomena, and to investigate relationships and solve problems in scientific, technological and environmental contexts.

Assessment Standards: We know this when the learner

1.1 plans investigations;

  • takes the lead in investigating and collecting data;
  • evaluates data and provides feedback on observations


Habitats of plants:

Water: Some plants grow under water and others grow on the water

Deserts: Some plants can grow in deserts where it is hot and dry, and where the is very little water, e.g. cacti and mesems (mesembrythemums)

Mountains: Plants that grow on mountains must be able to withstand bitterly cold and strong winds: lichens, bitter-bush, disa, protea and sugarbush

Forests: Such plants grow in shade: Orchids, ferns and mosses

Veld: Fynbos and some proteas, restios

Botanical gardens: indigenous plants, usually

Semi-desert: The plants grow in dry areas, where there is little rain: karoo bushes, cacti

Any other appropriate answer

Questions & Answers

what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
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Source:  OpenStax, Natural sciences grade 4. OpenStax CNX. Sep 18, 2009 Download for free at http://cnx.org/content/col11096/1.1
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