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Question 1

Leaves: monocot vs dicots?

Answer 1

Mono: Veins run parallel
Dicot: Veins run in a network

Question 2

Internal structure of leaves? (3)

Answer 2

Mesophyll
Stomata
Guard cells

Question 3

Different types of mesophyll - explain.

Answer 3

Spongy - cells loosely packed for maximum gas exchange

Palisade - elongated cells densely packed, with high concentration of chloroplasts for maximum sunlight captured

Question 4

Explain stomata and guard cells

Answer 4

Guard cells control opening of the stomata. This allows for gas exchange

Question 5

Leaves - state function (4)

Answer 5

Primary site for photosynthesis
Gas exchange
Protection from predators (chemicals)
Storage of glucose for nighttime respiration

Question 6

What be herbaceous stems

stems without _____

Answer 6

Stems without wood

like justin bieber

Question 7

What is in the vascular bundle of stems? also include the location of these things in the stem

Answer 7

Xylem and phloem

Xylem runs closer to centre

Question 8

Differentiate between the vascular tissue of herbaceous monocots and dicots

Answer 8

Mono: vascular tissue runs in ground tissue, no particular arrangement

Dicot: vascular tissue forms a ring

Question 9

Why do woody stems grow thicker over the years?

Answer 9

the vascular cambium continuously divides to produce new layers of xylem and phloem tissue

Question 10

What does bark include? What does the phloem do here?

Answer 10

Phloem, cork, cork cambium

Phloem transports sugars to the rest of the plant

Question 11

Differentiate xylem and phloem cells

Answer 11

X: Dead at maturity
P: Living at maturity

X: Two types: tracheid and vessel element
P: Three types: sieve tube element, sieve cells, companion cell

X: only transports water and minerals
P: water and food(carbs, amino acids)

X: one way flow
P: Two way flow