leaf

Question 1

leaf (fylom) functions

Answer 1

phtosynthetic assimilation
water management (transpiration, guttation
interchange of gases
storage
vegetative reproduction

Question 2

morphology (9)

Answer 2

diverse - size, shape, arrangement on stem, venation, presence, absence and length of petiole, shape of margins, division of a blade

Question 3

Leaf structure

Answer 3

1. tip/apex
2. blade/laamina
3. margin
4. midrib/primary vein
5. lateral veins
6. petiole

Question 4

categories - leaf on a shoot

Answer 4

1. cotyledons - mono/di
2. assimilatory leaves
3. stipules - small leaf-like structures
4. petals - modified leaves, protect reproductive organs

Question 5

types of leaf venation

Answer 5

1. pinnate
2. palmate
3. parallel

Question 6

Division of leaves based on lamina

Answer 6

1. simple leaves - 1 simple lamina
2. compound leaves - many seperate parts/leaflets

Question 7

Arrangement of leaves on stem

Answer 7

1. alternate
2. opposite
3. whorled

Question 8

defoliation

Answer 8

separation of leaves from a branch/stem, falling or shedding of the leaves, every year after the vegetation period, gymnosperms only each 3rd-9th year

Question 9

Leaf structure

Answer 9

Influenced by conditions - amont and intensity of light, climate and habitat.

Epidermis, vascular tissue, ground tissue

Question 10

monofacial - bifacial

Answer 10

monofacial - monocotyledons = garlic, lily of the valley
bifacial - different sides = dicotyledons - lime tree, dandelion

Question 11

Epidermis - bifacial

Answer 11

lower/upper
both can be covered by cuticle
stomata in lower ep.

Question 12

Epidermis - monofacial

Answer 12

covered by cuticle
stomata on both sides

Question 13

Mesophyll

Answer 13

kind of parenchymatic tissue, contains collateral vascular bundles

Question 14

Mesophyll bifacial

Answer 14

divides into palisade m. (contains many chloroplasts) and spongy mesop. (contains less chloroplasts and has many intercellular spaces)