Biology practicals 34

[samantha liyanage]

how was it for you guys ?

 

[Omar Haider]

It was alright. The questions in Question 2 were phrased a little differently, and the drawings were a little different than usual. How was yours?

 

[Dharitha_98]

how was it for you guys ?

I think it was pretty good. Not very unusual. Although the writing part was sort of silly, which makes me think they were really tricky.

 

[samantha liyanage]

it was a sort of tricky paper.
But it was a good paper

 

[Dharitha_98]

I accidentally took 4 readings which included '20 minutes' as well, instead of just '0 minutes' in the beginning. Guess that was one of the only major mistakes I made.

 

[Dharitha_98]

Oh, and the graph was awesome. I'm so glad we didn't have to plot one using our own results. Tehe.

 

[Dharitha_98]

How sunken stomata reduces the rate of transpiration in xerophytes: they cause water vapour to accumulate in the pits, therefore reducing the diffusion of water molecules outside by osmosis (because of the water potentials) so less water is lost.

You're welcome.

 

[Snowysangel]

What were the iodine readings?

 

[Snowysangel]

I think I forgot to label the guard cells :/

 

[Snowysangel]

How many marks was that drawing out of?

 

[happyperson]

How many marks was that drawing out of?

The one for alveolus was of 4 marks and the one in b ii was of 5 marks.

 

[happyperson]

Guys, what were the volume readings and trend? Were these like 1.5, 1.7, 1.8 and 1.9 (i don't remember exactly) but the readings were increasing?
In the feature Z i marked the cuticle, the cuticle was thick and epidermal cells were quite below, so i wrote the thick cuticle prevents water loss as it is impermeable to water. Is it fine?
What was the systematic error?

 

[Snowysangel]

Guys, what were the volume readings and trend? Were these like 1.5, 1.7, 1.8 and 1.9 (i don't remember exactly) but the readings were increasing?
In the feature Z i marked the cuticle, the cuticle was thick and epidermal cells were quite below, so i wrote the thick cuticle prevents water loss as it is impermeable to water. Is it fine?
What was the systematic error?

Ya they were increasing. I got .5 , .7, 1.0 and 1.7...but I feigned a second set of readings to get them. Will they accept those readings :/

 

[Snowysangel]

The one for alveolus was of 4 marks and the one in b ii was of 5 marks.

Did the 5 marks include the labeling if guard cells?

 

[happyperson]

Ya they were increasing. I got .5 , .7, 1.0 and 1.7...but I feigned a second set of readings to get them. Will they accept those readings :/

Yes i think they will.

 

[happyperson]

Did the 5 marks include the labeling if guard cells?

Yes it did include the labeling, i guess 1 mark.

 

[Snowysangel]

Yes i think they will.

But that would mean that I asked for another beaker of distilled water I couldn't understand when you're supposed to repeat readings so I decided to over effecirnt this time

 

[Snowysangel]

The systematic error was in the syringe

 

[happyperson]

But that would mean that I asked for another beaker of distilled water I couldn't understand when you're supposed to repeat readings so I decided to over effecirnt this time

It's a better option to repeat, as they themselves write that in ms.

 

[happyperson]

The systematic error was in the syringe

I thought that but how?