Plant tissues , organs and systems

Question 1

What is the upper epidermis

Answer 1

Cube shaped that join together to make a lining

Also transparent and one cell thick to allow light for the palisade cells ( photosynthesis )

Question 2

Guard cells

Answer 2

Can change turgid to flaccid and close stomata to conserve water and to allow gases to enter and to leave

Question 3

Palisade mesophyll

Answer 3

Oblong and packed together

Contain lots of chloroplasts, This means they can capture more sunlight so more photosynthesis ( More food )

Question 4

spongy mesophyll cells

Answer 4

shaped so they are not packed together which allows carbon dioxide to diffuse through the leaf into the palisade cells

Question 5

Xylem ?

Answer 5

Oblong shape

Joined together to make a longer tube

Runs up the plant for the roots to the tree branching out to the leaves.

Carries water and minerals and other substances needed for photosynthesis

Question 6

Define transpiration

Answer 6

How water moves through the tree from root to leaf

Question 7

Phloem ?

Answer 7

Oblong shape

Joined together to make a longer tube

Tube carries Food to others parts of the plant ( Translocation)