Chapter 9-10

Question 1

Adaptive feature of xylem and its function:

1. Transport :

*the presence of _________, will decrease the _____________ when transporting mineral and water.

2. Support:

*_________ cell wall will provide ____________ to support plant to keep erect

Answer 1

1. Transport :
   *the presence of hollow tube, will decrease the resistance when transporting mineral and water.
2. Support:
   *lignified cell wall will provide rigidity to support plant to keep erect

Question 2

What is the uppermost cell of a leaf

Answer 2

Upper epidermal cell (x waxy cuticle)

Question 3

What is the uppermost tissue of a leaf ?

Answer 3

Upper epidermis (x upper epidermis tissue)

Question 4

What are the functions of upper epidermal cell ?
* it’s a ________ layer that enables _________ to penetrate
* ensure maximum amount of _______ can be retained in lower layer of ____________ to carry out _____________ .

Answer 4

• it’s a transparent layer that enables sunlight to penetrate
• ensure maximum amount of water can be retained in lower layer of palisade mesophyll cells to carry out photosynthesis.

Question 5

How can palisade mesophyll cell can be adapted to maximise absorption of light

• it is located at the __________ and closely packed with _____________ for

Answer 5

• it is located at the upper layer of the leaf and closely packed with chlorophyll and chloroplast for maximising light absorption rate

Question 6

How can palisade mesophyll cell be adapted to efficient uptake of carbon dioxide ?

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Question 7

What is the chemical composition of chlorophyll ?

Answer 7

Magnesium and nitrogen

Question 8

What is the function of