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Root Flashcards
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- 1Tap roots that swell with water or carbohydrates perform storage functions for survival in the dessert-Beets
-Carrots
-Parsnips
-Cassava
-Yams - 2Roots HairsSingle cell projections from the epidermis of a young root
- 3What do roots do when they dieAdd organic matter to the soil
- 4How do roots differ from stemsRoots do not have nodes from which shoots develop (exception of suckering roots in popular trees and thistles)
- 5What kind of tissue is the Root Cap made of?Parenchyma tissue- it is continually replaced as the root tip is pushed through soil
- 6Does Root look for water?No, roots are pushed down by gravity and sets it in a position of finding higher soil moisture.
- 7What does the Apical Meristem do and where is it located?It supplies root cap with more cells with more cells as they are lost, it is located above the Root cap and below the region of elongation.
- 8—a- region of maturation
b- secondary root branches
c- root hairs (absobtion of water)
d- apical meristem
e- root cap
f- region of elongation - 9—a- epidermis
b-cortex
c-pericycle
d-xylem
e-endodermis
f-vascular cambium
g-phloem
- 10Four main Root StructuresMaturation
Apical
Elongation
Root Cap - 11What does it mean when you see Root hairsThat the plant has differentiated enough to actively take in water and minerals
- 12Where do root hairs begin growthFrom the epidermal cells
- 13Where is water storedIn the cortex of parenchyma cells
- 14Where do lateral roots grow from?Exterior layer of stele called pericycle
- 15What do monocot roots not have that a dicot root has?A vascular cambium
- 16What region of root is constantly movingElongation Region
- 17Why are there no root hairs on elongation regionbecause of the movement of the part of the root
- 18How much of a large plant is underground?1/3 to 1/2
- 19What part of the root grows in diameter?Mature region
- 20What is Guttationwhen there are small droplets of water on tips of young leaves, this means that the plant has a healthy root system.
- 21What happens in the dissuasion of water intakeWater and ions move freely along cell walls and intercellular air space in cortex
- 22What is suberinA waxy like compound that tightly packs endodermis cells on the top, bottom and side walls
- 23where does a apoplectic pathway gothrough the cell wall
- 24Where does symplastic pathway go?Through the cytoplasm
- 25What are the 18 essential elements of plants?1)Boron
2)Carbon
3)Chlorine
4)Calcium
5)Cobalt
6)Copper
7)Hydrogen
8)Iron
9)Magnesium
10)Maganese
11)Molybdenum
12)Nitrogen
13)Oxygen
14)Potassium
15)Phosphorus
16)Sodium
17)Sulfur
18)Zinc - 26What are the Organic NutirentsOxygen
Hydrogen
Carbon - 27What are the Primary Macro-Nutirents?Nitrogen
Phosphorus
Potassium - 28What are the Secondary Macro NutrientsSulphur
Magnesium
Calcium - 29Which nutrient builds protein, nucleic acid and chlorophyllNitrogen
- 30How can you tell if a plant is lacking NitrogenYellowing of lower leaves
- 31What nutrient promotes root growth and hastens maturity?Phosphorus
- 32How can you tell if a plant is lacking Phosphorus?Lower leaves turning a dark green to purplish colour
- 33What does potassium do for the plant?Improves stalk strength and creates diease resistance and vigour
- 34How can you tell if a plant is lacking potassium?Mottled chlorosis of lower leaves and browning of leaf tips
- 35What nutrient enhances seed formation in Brassicacease and nodule formation in legumes?Sulphur
- 36How can you tell is a plant is lacking SulphurInterveinal chlorosis in younger leaves
- 37What does calcium do for the plant?Enhances root hair formation, growth and fruit development
Forms structural component of middle lamella - 38How can you tell if a plant is lacking calcium?Necrossi of younger leaf margins and apical meristems
- 39How can you tell if a plant is lacking Magnesium?Reddish- purple streaks form in the older leaves
- 40What does magnesium do for a plant?Involved in starch translocation, fat and oil formation and aids ribosomes in protein synthesis
- 41What does endodermis do for the root?Set of permeable membranes that selectively take minerals and water and move them to the stele
- 42What region of root would most active absorption of minerals occur?Mature region, where endodermis has fully matured
- 43Why are the secondary macronutirents called this?Because they are taken up in fairly large amounts, but not as much as primary nutrients
- 44How much water is needed in soil before roots can take in moisture30% by volume
- 45Roots grow better in cooler temperatures, around what temperature?10 degree celcius
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- Fichas sobre Root Flashcards, creado por beccataylor101 el 22/10/2014.
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- beccataylor101
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