This question was fairly well debated with pupils making connections with what you have learnt, research and supported points made with examples from life around you.
The discussion on the pollination process was rich and I liked the comment by Sean Pek (6C) that flowers do know how to attract pollinators.
'I wish to explain how plants can 'lure' animals to pollinate them to the same plant, like being close to other plant so that the pollinator do not have to travel far to get more nectar, making the pollen land on the plant.'
I also think that Samuel Tay and Sean Pek below made some good points:
'Wind dispersed pollen must land on the same species of flowers to ... (fertilise the flower). Insect pollinated plants needs the help of insects to transfer the pollen grains from the anther to the stigma. For some species, if they do not land on the same type of plants, the pollen tube will not (grow). Some, however can cross breed.' Posted by Samuel Tay
'It is rare to crossbreed flowers of different genus ... if they have the chromosomes that are interchangeable, it may mix and the microgametophytes will mix with the ovum to form a seed. Finally, it seriously depends on its genus. If they are the same , most likely, there will be a baby (or egg).' Posted by Sean Pek
When we look around us, we do not see a large variety of cross-bred flowers for example. So maybe we should ask a different question: Do ovules accept all types of pollen?
Finally we thank all the curious pupils who gave us a good list of cross-bred animals - longest list went to Marcus Chionh (6G) - so my question is, "What do they have in common?'
I liked the heated argument by Ellia (6C) and comapny about cross-pollination and self-pollination. Maybe we can discuss during the next holidays!
How To Soar in PSLE - BTPS Way!!
Interact with complex questions / graphs / pictures to pick up valuable clues (don't highlight - just use your pen to underline words or scribble notes)
Start with Booklet A and do it meticulously with full focus - explore all 4 distractors before making final choice.
MANAGE your TIME - to score well, you need to try to finish ALL questions.
Specific answers = answers that are relevant to question.
When confused, choose any of the following strategies:
1. Ask, "What Science idea is being used in question?"
2. Pose other questions to clarify your thoughts
3. COMPARE to another set-up
4. COMPARE to a reverse situation
5. Connect to your knowledge in life (yes, you do have lots of prior / other knowledge)
6. Break down your answer in steps before crafting final answer.
Common problems with wrong answers:
*Answers are generic/vague and do not connect to that specific question
*Answers are not scientific and do not explain using Science ideas
*Answers do not make use of data provided when asked
*Answers did not make comparisons - use words like more/most etc..when asked
BTPS supports all P6 in achieving their PSLE GOALS!!
Start with Booklet A and do it meticulously with full focus - explore all 4 distractors before making final choice.
MANAGE your TIME - to score well, you need to try to finish ALL questions.
Specific answers = answers that are relevant to question.
When confused, choose any of the following strategies:
1. Ask, "What Science idea is being used in question?"
2. Pose other questions to clarify your thoughts
3. COMPARE to another set-up
4. COMPARE to a reverse situation
5. Connect to your knowledge in life (yes, you do have lots of prior / other knowledge)
6. Break down your answer in steps before crafting final answer.
Common problems with wrong answers:
*Answers are generic/vague and do not connect to that specific question
*Answers are not scientific and do not explain using Science ideas
*Answers do not make use of data provided when asked
*Answers did not make comparisons - use words like more/most etc..when asked
BTPS supports all P6 in achieving their PSLE GOALS!!
Subscribe to:
Post Comments (Atom)
Science Around Me (SAM)
SAM is a Science journal that allows pupils to express themselves in their favourite ways about Science.
SAM is another great opportunity for pupils to THINK and TALK Science in a medium that is customised to their learning styles.
SAM allows teachers to informally assess understanding of the child and clarify misconceptions in their learning.
SAM is another great opportunity for pupils to THINK and TALK Science in a medium that is customised to their learning styles.
SAM allows teachers to informally assess understanding of the child and clarify misconceptions in their learning.
Factors Affecting the Environment by Gog Ru Yan - 6G
When Ice Changes into Water by Goh Chee Yan - 5G
Do you wonder whether the mass of ice changes when it melts into water. Try this out:
1. Put a few ice cubes into a plastic bag
2. Tie the mouth of the bag tightly
3. Weigh the bag of ice cubes (if there is condensation outside the bag, wipe it dry before weighing)
4. Place the bag in the sun
5. When ice has melted, wipe the outside of the bag dry (refer to step 3)
6. Weigh the bag
You will discover that the mass of the bag remains the same!
There is no change in mass when ice melts!!
1. Put a few ice cubes into a plastic bag
2. Tie the mouth of the bag tightly
3. Weigh the bag of ice cubes (if there is condensation outside the bag, wipe it dry before weighing)
4. Place the bag in the sun
5. When ice has melted, wipe the outside of the bag dry (refer to step 3)
6. Weigh the bag
You will discover that the mass of the bag remains the same!
There is no change in mass when ice melts!!
Simple Steps to fight Dengue by Elizabeth Wu 4C
No comments:
Post a Comment