<< Chapter < Page Chapter >> Page >

Natural sciences

Life and way of living

Educator section

Memorandum

  • Locust:
  • No, yes, 6

1. Large: 2

Small: 3

2. Three

3. Four

4. No. Forewings hard and leathery, rear wings soft/delicate and can be opened out to form a large surface area

5. Like plastic, hard

6. Feelers

7. No. There are spiracles on each segment of the abdomen.

8. Yes. Mouth parts are located at the bottom of the head. Cutting edges and feelers.

9. 6 legs.

10. No. The rear legs are stronger.

11. No. The females and males differ. The female locust has an ovipositor and the male has a copulatory organ.

12. Protection: hard external skeleton, but it can use the feelers for feeling. Does not lose moisture, can cope without water. Can move around easily: walks, sometimes flies of jumps. Can look for food because of its locomotive ability, can see, has good mouth parts.

13. The learner should draw from life. If possible, a real creature must be observed.

14. Life cycle: adult, eggs, larva, pupa

Assignment 3:

  • Dependence on water: able to survive dry conditions, able to live in environments where there is no vigorous competition from other animals. Exoskeleton prevents loss of moisture, eats plants that contain sufficient water.
  • Obtaining food: locusts are able to move fast and far to look for food. Eggs can survive dry conditions and hatch when the soil is becomes moist (rain) and plants are green.
  • Insects that display complete metamorphosis: survive in the form of a pupa, eggs hatch when food is available.
  • Respiration: tubes in the body transport the gases. They remain moist (do not dry out as easily as the earthworm).
  • Senses and communication: smells and feels with help of antennae; has a tympanic membrane (eardrum) on the first segment of the abdomen, creates sound by rubbing the rear legs against the rough wings (locust; other insects differ, but the main thing is that they are able to communicate).

Leaner section

Content

Activity 8: to investigate and describe the grasshopper’s ability to survive [lo 1.1, lo 1.2, lo 2.3, lo 2.4]

The grasshopper

The grasshopper belongs to the largest group in the animal kingdom, namely the insects.

What do you already know about this group?

  • Spinal column: yes or no?_____________________________________________
  • Legs: articulated or not?______________________________________________
  • Number of legs:_____________________________________________________

Investigation : Catch a few different types of insects and bring them to class. Form groups of two or three and study the insect in the group of which the body parts can be distinguished easily. A grasshopper or a cricket works well. Answer the following questions (try your best to give a good answer so that you can get a good mark):

1. An insect has large as well as small eyes.

  • Large: ___________________________________
  • Small: ___________________________________

2. In how many main parts would you divide the body? _______________________

3. How many wings does the insect have? If the wings are folded against the

body, lift them up and look carefully. ______________________________________

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
hi
Loga
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Good
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Natural sciences grade 7. OpenStax CNX. Sep 16, 2009 Download for free at http://cnx.org/content/col11077/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Natural sciences grade 7' conversation and receive update notifications?

Ask