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3. Who lives there? (contd.)
3. Who lives there? (contd.)
3.2 Explain how the features of some Australian plants and animals are adaptations for survival in their environment.
3.2 Explain how the features of some Australian plants and animals are adaptations for survival in their environment.
3.2A Activity
View the video Types of Adaptations [4.16 mins] https://www.youtube.com/watch?v=vnmPdHmRv9o
2. Research this site (click the right arrow at the left middle of the page to go to the next one) https://www.australiangeographic.com.au/topics/wildlife/2016/02/top-10-ingenious-aussie-animal-adaptations/ and complete "Adaptations Worksheet" bottom of Page 51 and all of Page 52 of the Booklet (images below).
3.2B Activity (Violets)
Research this site (click the right arrow at the left middle of the page to go to the next one) https://www.australiangeographic.com.au/topics/wildlife/2016/02/top-10-ingenious-aussie-animal-adaptations/
Complete "Adaptations Worksheet" bottom of Page 51 and all of Page 52 of the Booklet (images below).
3.2C Activity (Sunflowers)
3.2C Activity (Sunflowers)
Complete the Adaptations Worksheet
7.3 COL 3.2 Adaptations WS S.pdf3.2C Activity (Violets)
Complete the Adaptations Worksheet
7.3 COL 3.2 Adaptations WS V.pdf 3.3 For one named vertebrate and one named invertebrate, identify the usefulness of their structural adaptations in their environment.
3.3 For one named vertebrate and one named invertebrate, identify the usefulness of their structural adaptations in their environment.
Earthworm Adaptation
3.3A Activity
View the video: Worms are wonderful [4.33 mins] https://www.youtube.com/watch?v=l-zc_1vjLnI
3.3B Practical
Earthworm Observation https://www.biologycorner.com/worksheets/earthworm_observation_living.html
The earthworm is a living creature, part of God's creation. We treat it with respect and care for its welfare.
Earthworms belong to Kingdom _________________________Phylum ________________________.
EQUIPMENT:
§ petri dish
§ magnifying glass/hand lens
§ newspaper
§ stereo microscope
§ pair of forceps
§ gloves
§ piece of paper towel
MATERIALS: 1 earthworm
PROCEDURE:
1. Place the earthworm on a moist paper towel in a petri dish. Give your worm a name.
2. Observe the worm as it moves. The front end is the anterior end, the other end is the posterior end. What other clues on the earthworm would tell you which end was which?
3. Observe the worm's activity for a few minutes. Describe how the worm moves. What is a hydrostatic skeleton? What muscles are necessary for the earthworm to move?
4. Worms are divided into segments. See if you can count the number of segments on your worm. Compare your worm to another worm in the room.
5. Roll the worm over and observe what happens. The side that the worm prefers to have UP is the dorsal side. The side it prefers DOWN is the ventral side.
6. One the ventral (down) side of the earthworm are small bristles called SETAE. They are too tiny to see, but you can feel them by running your fingers along the ventral side of the worm. What do you think these are for?
7. Place a piece of dry paper towel on one side of the pan and a piece of moistened paper towel on the other. Stretch the worm so that it lays across both towels. Observe the earthworm's response. Which direction does it move?
8. Remove the paper towel from the dish and let the worm just move around for a while. Use a pipette to drop a water droplet on its anterior end. Record its reactions. Drop water on its posterior end and record its reactions
9. Study the earthworm's head. Does it appear to have any sense organs, such as eyes, ears, nose, or mouth? Do you think the earthworm is capable of sensing... (make your predictions below- Y or N)
Light? ____ Odour? ____ Sound? _____ Taste? _____ Touch? _____
10. How might you test the earthworm’s other senses?
Classes of mammals
3.3C Practical: Squid Dissection
3.3C Practical: Squid Dissection
https://www.youtube.com/watch?v=AaaWXlAGenc [7.23 mins]
Eyes up = dorsal, spread it out carefully
main body = mantle
count arms
note tentacles
note fin
note feet
Eyes down = ventral. spread it out carefully
find siphon (use probe carefully)
note difference in bottom side of arms
Use scissors to cut carefully (skin only, not deep) from above siphon to the feet.
Use forceps to grasp the sides of mantle and spread out
note ink sac
intestines
cecum (digestion)
gills either side
find 3 hearts (one in each gill, main in centre above ink sac)
male: large white sac at top right , soft;
female: large white sac middle centre; ovaries are above the sac, closer to the feet, coloured if filled with eggs; more solid in comparison
Move internal organs aside, pull hard on white scaly length to remove.
Carefully make a small incision in the ink sac, dip in "pen" and write.
Carefully place the dissecting equipment in the beakers.
Pack the pieces of squid into the newspaper with your gloves, wrap and place in yellow bag.
Clean the bench.
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