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Natural sciences

Ecosystems and the environmental balance

Educator section

Memorandum

Assignment 2:

1. petiole

2. leaf-base

3. leaf margin

4. lamina (leaf-blade)

5. veining

Assignment 3:

1. net-like veins

2. net-like veins

3. parallel veins

4. net-like veins

5. net-like veins

6. net-like veins

7. parallel veins

Leaner section

Content

Activity: to classify plants according to their characteristics [lo 2.2]

There are many thousands of species of plants and animals on the earth and they all differ from one another. When plants and animals with the same characteristics are grouped together (classified), it is easier to study them.

Why is it important to also carry out the classification of plants and animals as part of ecological studies?

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

_____________________________________________________________________

The following table indicates how plants can be classified according to their external characteristics.

(i) Classification of plants on the basis of their leaves

Plants can be classified according to their leaves.

Net-like veins

The flat section of the leaf is called the leaf-blade (lamina). It is attached to the stem by means of a leaf-stalk (petiole). The petiole runs into the vein to form the main vein. The main vein branches and re-branches into lateral veins, forming a network of veins in the lamina. This is known as net-like (reticulated) veins.

Assignment 2:

1. __________________________________________________________________

_____________________________________________________________________

2. __________________________________________________________________

_____________________________________________________________________

3. __________________________________________________________________

_____________________________________________________________________

4. __________________________________________________________________

_____________________________________________________________________

5. __________________________________________________________________

_____________________________________________________________________

Assignment 3:

Study the sketch below and classify the leaves of the following plants as having net-like or parallel veins.

PEER ASSESSMENT:

PLANT NET-LIKE OR PARALLEL VEINS
rhubarb __________________________________________
brussels sprouts __________________________________________
onion __________________________________________
spinach __________________________________________
cabbage __________________________________________
lettuce __________________________________________
grass

Assessment

Learning Outcome 2: The learner will know and be able to interpret and apply scientific, technological and environmental knowledge.

Assessment Standard 2.2: We know this when the learner categorises information.

Questions & Answers

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
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
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
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
Daniel
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Natural sciences grade 6. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11079/1.1
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