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Natural science

Grade 4

Life and way of living

Module 9

Compare the growth of plants in various circumstances

Activity:

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

Assessment

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

Memorandum

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

Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
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
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
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Loga
how did you get the value of 2000N.What calculations are needed to arrive at it
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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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