BIOLOGY, Photosynthesis, Transpiration, Structure of plants

Question 1

What is the word equation for photosynthesis?

Answer 1

Carbon Dioxide + Water = Glucose + Oxygen
light

Question 2

What is the symbol equation for photosynthesis?

Answer 2

602 + 6H20 = C6H12O6 + 6O2

Question 3

What is xylem?

Answer 3

The tissue inside a plant that transports water and mineral ions.

Question 4

What are some factors that can affect the rate of photosynthesis?

Answer 4

Light intensity
Temperature
CO2 concentration
Wavelength (color) of the light.

Question 5

When the temperature rises, why does the rate of photosynthesis on a plant decrease from around 40 degrees?

Answer 5

The enzymes needed for photosynthesis become denatured.

Question 6

What is the equation for the inverse square law?

Answer 6

1/ distance squared

Question 7

What is the equation for the rate of photosynthesis?

Answer 7

Volume of oxygen produced (cm cubed)/Time (s)

Question 8

What is osmosis?

Answer 8

The movement of water particles from a high concentration to a low concentration through a partially permeable membrane.

Question 9

What is diffusion?

Answer 9

The movement of particles from a region of high concentration to a low concentration.

Question 10

What are some of the roles of guards cells?

Answer 10

Controls the opening and closing of the stomata,
Changes shape to open and close the pore,
They swell and curve when the plant absorbs water and they shrink and straighten when they lose water,

Question 11

What is phloem?

Answer 11

Phloem is the living tissue in vascular plants that transports the soluble organic compounds made during photosynthesis such as photosynthates and sugar sucrose, to the rest of the plant.

Question 12

What is translocation?

Answer 12

Translocation is the movement of sugar (such as sucrose), produced during photosynthesis, to other areas of the plant.

Question 13

What is the transpiration stream?

Answer 13

The uninterrupted stream of water and solutes which is taken up by the roots and transported via the xylem to the leaves where it evaporates into the air.

Question 14

What is active transport?

Answer 14

The process of transferring substances into, out of, and between cells, using energy against their concentration gradient.

Question 15

What is transpiration?

Answer 15

When plants continually lose water, especially at the leaves.

Question 16

What are some factors that affect the rate of transpiration?

Answer 16

Light
Humidity
Temperature
Air movement

Question 17

What is an adaption of root hair cells?

Answer 17

They have tiny hairs that poke into the soil, this increases the surface area for the root hair cell so it can absorb more water and minerals.

Question 18

How are palisade cells well adapted for photosynthesis?

Answer 18

They have lots of chloroplasts and they are positioned towards the top of the leaf to receive the maximum amount of sunlight.

Question 19

What do xylem cells do and where are they placed?

Answer 19

They run inside stems of the plant from their roots to their leaves.
They have thick cell walls to provide support for the plant.
They are made of dead cells.
No pores in their end walls and xylem cells contain lignin.
Do not contain cytoplasm and these cells are tubular.
Involved in transpiration and are transported unidirectionally.

Question 20

What do Phloem cells do and where are they placed?

Answer 20

Made from living cells.
Next to the phloem cells are companion cells which have lots of mitochondria, respiration occurs to release energy from glucose to transport substances.
Contains cytoplasm and doesn’t contain lignin.
These cells have pores in their end walls and they are tubular.
Involved in translocation and transports sugars bidirectionally.

Question 21

How do plants use glucose made?

Answer 21

To make fat/oil.
To make amino acids/proteins/enzymes.
To make cellulose/cell walls.
For active transports.
To make starch.
To supply the plant with energy.