Please comment on the following (this was your Home Learning assignment which is due today):
Choose one of the 8 (eight) characteristics of life. In your opinion, explain how the tadpole expresses that characteristic.
Using 1 (one) complete sentence or more, state:
1) the characteristic you chose,
2) Why you selected this characteristic, and
3) How the tadpole expresses that characteristic.
Example:
The characteristic I chose was metamorphosis because I have been watching and drawing the tadpole during the past three classes. I have observed that it grows and develops, changing its body shape and size.
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16 comments:
I selectd the metamorphosis characteristic because tadpoles grow and develope throughout their lives.
The one that i selected is Metamorphasis because all living things especially humans go through this process.Tadpoles express this characteristic of metamorphasis because they start like little eggs and grow up to be a tadpole, and then theybecome adult frogs. In conclusion,they express metamorphasis because they grow and change through the diffrent stages they pass through life.
i tInK DAt mEtAmOpRpHiS ChArAcTErIsTiC BcUz dEy gRoW Nd deVeLoPe!!!!
the one thing that i pick was metamorphosis because the way tadpoles grow and develope in life till they become adult frogs.
i selectd the metamorphosis because,i like wacthing things grow and develope throughout their lives. for example. my mango tree. in my back yard.
see u soon.
The one i select is methamorphosis because i have seen the tadpoles grow and develope trougt their lives.I have been watching them change in clase.
The characteristic I chose was metamorphosis because tadpoles grow and develop. They start off extremely tiny then, over time, start growing legs and other features until they are frogs.
Good morning class! I am delighted to see you all in class and working hard.
After everyone posts today, if you have extra time, feel free give me some feedback of how class is going today.
Teaching Assistants (Wallicia and Rene) make sure that you are setting a good example by being on task. Help any of the students that need help. Thanks!
Just a few comments on what I have read from you today:
6160113 - right on, they do grow. can you elaborate and add one or more examples of specifically HOW they are growing?
5883419 - i appreciate how you are able to comment on the metamorphosis of the tadpole and also relate the concept of metamorphosis to humans and all living things. seeing how metamorphosis is a part of the life cycle of all living things is critical.
9921571 - liking your style of writing. can you give me a specific way that they are growing or developing that you have observed?
5615656 - same as above, tell me one way you have seen them grow thus far
what i have selected was the metamorphosis characteristics because tapoles grow and develope throught their lives just like humans develope and many other organisims
the 1 i selected is metamorphasis. i chose this becasue i have seen the tadpoles grow and devolop so far.i have seen them to begin to start growing tails and stuff like that.
i have choose evolution because,it is very interesting.i like to see evolution when tadpoles turn in to frogs.
The tadpoles are metaphorphosising into forgs by growing legs.
I DIDNT KNO WAT 2 CHOOZE SO I CHOZE METAMORPHISIS CUZ EVERYONE ELSE CHOZE IT THA TADPOLES BEGIN GROWNING AND START LOSING DERE TAIL ND START GROWING LEGS ND SUM OTHER MIERDA PINCHES TADPOLES VALEN VERGA
More feedback for you:
I am so pleased with the students in this class!
007225 - you clearly expressed the concept of metamorphosis by stepping out of the biology classroom and applying this concept to something that you know from home. right on! as you observe the life cycle of the mango tree, have you seen any patterns of development that happen to the tree during the same months of each year? for a period of time, I kept a tree journal, writing the date and my observations for specific trees. i noticed several developmental patterns that were related to the time of the year. some people are expert in this. maybe you? they can see a tree, for example, a mango tree, and see what the leaves and the buds, flowers or fruits look like, and know, without a calendar, what month it is. cool, eh? will you give me an example of how you see metamorphosis happening with the tadpoles you have observed?
7489314 - specifically, what changes have you observed? even if other people have stated the same thing you are thinking, I would like to hear you state it in your own words.
0245641 - exactly, you clearly identified the trait and specifically explained how the tadpole expresses it.
sergio tuda - excellent (i don't see your ID and this is why you see your name here) You have commented how humans, tadpoles and many other organisms change through their life. How exactly, have you noticed the tadpoles change as you have watched them?
5584091 - cool! who would have even thought that a frog would start off having a tail!! to me, if i had not seen it with my own eyes, it would be hard to believe. like someone telling me humans start off with a tail, or chickens start off with a tail. i would not have assumed that adult animals with no tails at one point had them... but frogs do!
0010321 - evolution and metamorphosis are two closely related terms. in fact, they may appear to be synonyms defining the same concept. i am going to try to explain to you the difference. please tell me what you understand the next time you log on and read this. the concept that you described in your post is actually called metamorphosis.
METAMORPHOSIS
metamorphosis refers to the growth and changes that take place during the life time of an organism. in the case of the frog, a frog starts out as an egg, then grows out of the egg and when it can freely swim in the water we call it a tadpole. it has a tail and can swim around. eventually, it will change more, eating a lot and getting bigger, then growing feet. later in it's life it will be able to both walk around on the land and swim in the water. all these changes of growth are called metamorphosis.
EVOLUTION
Evolution is the name that scientists have given to the idea that over 1000's of years a particular species might change as a group. evolution is generally not noticeable in one organism during its own lifetime. let me attempt to use a frog to explain. let's say that there is a population of frogs living in a marshy area, like the mangroves or the everglades. these frogs like to live in the water and the tall grass. they eat the flies and mosquitoes that live in that area. let's imagine that there are no tall trees in this area. can you see a picture of this? let's say the year is 2007, September to be exact.
Now, let's imagine that we return to this same spot about 2000 years later, and it's the year 4012. we are still able to find these same frogs living in the marshy areas. but the place looks a little different. there are not as many mangroves as before. in one area the mangrove trees have been taken over by tall, tall, tall trees. it looks like a tropical forest. the mangroves are on the edges of the forest. inside the forest, we don't see any of the frogs living. we only see them in the marsh, where there is water.
Then, at night, we camp out in the forest and we hear lots of frog noises but we can't see any of them on the forest floor. where is the noise coming from? YUP!! look up! if you can believe it, there are lots of TREE FROGS happily chirping high, high up in the top canopy of the leafs of the trees. so, we get some climbing ropes and climb the trees to get a look. we are astonished to see that the frogs look almost identical to the frogs that live in the marsh!!! But, one thing is drastically different. The tree frogs have a different type of webbed feet. Their feet make it so they can easily climb and move around within the tree canopy.
We decide to take a few tree frogs and do an experiment with them. We take them down to the marsh to see if they can swim. In fact, they can! But not very well. Nothing like the champion frog swimmers that live in the marsh. We then take some of the marsh frogs, climb back up the tree, and see how good they are at hopping on tree limbs 200 feet above the ground. They are pretty clumsy. A few even hop off the limb and fall.... down... down.... and luckily get caught in the safety net we set up just in case they did fall off. Their expert webbed swimming feet make hopping on high branches a difficult feat.
So, now we come to the question: How did these tree frogs get here? Where did they come from? When did they come? Why are they different from the marsh dwelling frogs ONLY in the appearance and function of their feet?
What scientists have come up with to explain possible answers to this questions is called EVOLUTION.
Evolution is defined as the gradual change in a species over time. It is not the change in a single individual over time. This would be called metamorphosis.
In this hypothetical situation of tree frogs and marsh frogs - which I am hypothetically suggesting - we would want to look at all the frog fossils between the years 2007 and 4012. We would look and see if there was any gradual change in the bone structure of the feet that suggests that their were genetic (DNA) mutations that caused the feet to change over time, or rather, adapt to the environment.
What scientists would want to study is if the tree frogs were at one point the same marsh frogs. By 4012, they have clearly evolved into two separate species. They are not suited to live in each other's habitats.
TO SUMMARIZE:
This gradual change in species over a LONG period of time (1000's, thousands, of years) is called EVOLUTION.
The changes that happen in the life cycle of a particular individual (between conception and death) is called METAMORPHOSIS.
Student:
Please post some feedback (optional). In the name field, write your student ID and the Period of Bio, so I can easily identify you.
For example: In the Identity field-
NAME: 1234567 Period 3
or
NAME: 0987654 Period 8
Thanks. This is an optional post. There is no extra credit that you will receive. You are not required to read or comment on this particular post.
If you do: I would like to hear one or more of the following of your opinions.
1) In your own words, how would you explain Metamorphosis?
2) In your own words, how would you describe Evolution?
3) In your opinion, what do metamorphosis and evolution have in common with each other?
4) In your opinion, in what ways do metamorphosis and evolution differ?
5) If a classmate asks you to explain both evolution and metamorphosis, how would you explain it?
6) How clear did I (Ms. P) explain the concept of evolution and metamorphosis?
7) How has your knowledge of these two characteristics of live changed after reading this post?
8) In your opinion, do you prefer to learn about something online, like this - or do you prefer to listen to a teacher talk in a classroom and teach a concept? Explain your preference.
9) What other concepts do you go to the internet to learn about? Would you say these concepts are related to your social teenager life or they are academically related to schoolwork.
10) Any other comments that are in your head, being relevant and appropriate, feel free to add.
DON'T FORGET TO TELL ME THE PERIOD YOU ATTEND BIOLOGY!!!!!!!!!!
Thanks! You students are stellar and rock!!!!!
STUDENTS!!!!!!!!!!
I am SOOOOOOOO Sorry!!
By accident I locked you out so that you could not post. I feel terrible at my mistake. I know that several of you may have been frustrated and stressed. I understand.
Next, class, if you were locked out because you got the moderator comment that said I had to approve it first, please use class time to repost.
I am truly sorry if you spent a lot of time writing your comments and then had to loose it all. I am new to blogging and I messed up. I did not discover my mistake until 1 pm, YIKES!!!! I locked out 1/2 of 5th period too.
I will make sure that does not happen again.
You will not loose any credit by posting today's blog late because it was my fault.
graded up to now
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