Why are some mitochondria different shapes (e.g circular)

Can you show the question: the basic point is that mitochondria themselves are different sizes and or shapes that is because they grow largely independently. Linked to that they divide independently so depending on what stage of mitochondrial development they exhibit they will look different. Finally when you produce a cross section for microscopy you might cut in a particular plane which makes it look like the mitochondria has a circular shape

http://pmt.physicsandmathstutor.com/download/Biology/A-level/Past-Papers/OCR-Old/Unit-1/January%202009%20QP%20-%20Unit%201%20OCR%20Biology%20A-level.pdf

Q 1ii
What does it mean to cut in a particular plane?

Think of a cucumber. You can cut it in different “planes” e.g. longways or sideways

If you cut it long ways it looks pretty flat. If you cut it sideways it looks circular. Hence in microscopy when we cut the cell we can eexperience something similar ... the mitochondrial might look differently depending on where we cut the cell

http://pmt.physicsandmathstutor.com/download/Biology/A-level/Past-Papers/OCR-Old/Unit-1/January%202009%20QP%20-%20Unit%201%20OCR%20Biology%20A-level.pdf

Q 1ii
What does it mean to cut in a particular plane?

The way you look at it, either on the top or the side.

Think of it like a cylinder, cut it in one plane and it looks like a circle. Cut it in another and it looks like a rectangle (kinda).

Thanks a lot!!
Can I ask two more Q's?
From the same paper.. Question 2 the cell N why is it half open? Just got confused :/
And the last question of the paper 6d
This is what it says in the markscheme:
(sugars) cannot pass the cut / AW ; decrease water potential ; water moves into cells ; (damage triggers) increased cell division ; to produce cells to store sugars ; cut causes, gall / infection ;

For question two the cell has burst open (haemolysis) too much water has entered

What is wrong with the answer to question 6d/what don’t you understand ...

Ask whatever you like 😌

Thanks a lot!!
Can I ask two more Q's?
From the same paper.. Question 2 the cell N why is it half open? Just got confused :/
And the last question of the paper 6d
This is what it says in the markscheme:
(sugars) cannot pass the cut / AW ; decrease water potential ; water moves into cells ; (damage triggers) increased cell division ; to produce cells to store sugars ; cut causes, gall / infection ;

I don't understand what the markscheme's answer
About the water potential and cell division... And sugars not passing the cut?

SHeeeeeepyyyyyyyyyyy

BaaaaAAAaaaAAAAaaaaa

If you need anything else, feel free to tag me

It says in the question the phloem is removed so the sugars moving down from leaves to sink get stuck. That leads to a reduction in water potential so water moves in and causes swelling. The stress of the situation also triggers cell division to try to repair the site and that can lead to a gall.

Thanks a lot!!
Can I ask more questions if I need help? Biology can be so confusing at times!
http://pmt.physicsandmathstutor.com/download/Biology/A-level/Past-Papers/OCR-Old/Unit-1/January%202011%20QP%20-%20Unit%201%20OCR%20Biology%20A-level.pdf

Can you please help me with question 4b and 4ciii in this paper? These two questions confused me a lot!
I know for 4b, vascular tissue consists of the xylem and phloem, if I'm not mistaken?

For question two the cell has burst open (haemolysis) too much water has entered

What is wrong with the answer to question 6d/what don’t you understand ...

Ask whatever you like 😌

This is what it said in the mark scheme and I don't get it!

(mitochondria) vary in shape ; longer than wide ; cut in different planes / angles / AW ; just divided / growing ; artefact / deformed during preparation of section ;

Can someone explain it to me?

Thanks a lot in advance