leaf Flashcards
1
Q
why is leaf flattened
A
to offer a large surface for the absorption of sunlight
2
Q
why is a leaf thin?
A
for sunlight to penetrate
3
Q
Epidermal cells
A
Are transparent so that light can penetrate to the deeper layers with large numbers of chloroplasts
4
Q
Vascular bundles
A
Form a network through the leaf: water from roots van reach all the photosynthesising tissues, and the product of photosynthesis can be taken away
5
Q
Stomata
A
Makes gaseous exchange possible
6
Q
Palisade parenchyma
A
Contains large numbers of chloroplasts and is situated on the adaxial side of the leaf for maximum light absorption
7
Q
Why are palisade parenchyma cells elongated
A
To facilitate the deeper penetration of sunlight
8
Q
Why are palisade parenchyma cells densely packed
A
To facilitate the diffusion of substances
