Chapter 3 : Nutrition in Plants

Question 1

What are plant nutrients for?

Answer 1

to grow well and produce high yields

Question 2

Name the main macronutrients…
a)
b)
c)

Answer 2

a) carbon
b) hydrogen
c) oxygen

Question 3

How are the remaining nutrients taken in by the plants?

Answer 3

in the form of mineral salts (dissolved in the soil through fertilisation)

Question 4

List all Macronutrients

Answer 4

Carl HyMaO PoNi SuP

Question 5

Functions of C,O,H. (2)

Answer 5

• important for carbon cycle & oxygen cycle

- synthesis of sugar

Question 6

Effects X C,O,H (2)

Answer 6

• photosynthesis cannot take place (less oxygen)

- stunted growth [death] {no glucose how to live…}

Question 7

Functions of Ca. (1)

Answer 7

-main component for middle lamella, cell wall & spindle fiber during cell division

Question 8

Effects X Ca (3)

Answer 8

• stunted growth
• leaves distorted & lobed
• leaf veins become yellowish

Question 9

Functions of Ma (3)

Answer 9

• main chlorophyll molecule
• activates enzymes
• carbohydrate metabolism

Question 10

Effects X Ma (3)

Answer 10

• matured leaves yellowish
• red spot on leaf
• lobed leaves

Question 11

Fuctions of Po (K) (3)

Answer 11

• protein synthesis & carbohydrate metabolism
• cofactor
• maintain plant turgidity

Question 12

Effect X Po (K) (2)

Answer 12

• leaf edges yellowish

- premature death

Question 13

Function of Ni (Nitrogen) (2)

Answer 13

• give green colour (formation of chlorophyll)

- main for proteins, nucleic acid and enzymes (in photo & respi)

Question 14

Effect X Ni (Nitrogen) (4)

Answer 14

• chlorosis
• underlying leaves fall
• protein synthesis disrupt
• stunted growth

Question 15

Function of Su (2)

Answer 15

• component for some amino acids

- component for vitamin B & some coenzymes

Question 16

Effects X Su (1)

Answer 16

-leaves/plant turns yellow

Question 17

Function of Pho (P) (2)

Answer 17

• synthesise nucleic acid, ATP, phospholipids

- coenzyme in photo & respi

Question 18

EffectsX Pho (P) (3)

Answer 18

• unhealthy root growth
• form dark green & dull leaves
• red / purple spots appearing on older leaves

Question 19

List all micronutrients…

Answer 19

ChloZi ICoMn NiBoMo

Question 20

Function of Chlo (2)

Answer 20

• osmotic pressure

- photosynthesis

Question 21

Effects X Chlo (4)

Answer 21

• plant wilts
• slower root growth
• chlorosis
• less fruit

Question 22

Function of Zi (3)

Answer 22

• leaf formation
• auxin synthesis
• cofactor for carbohydrate metabolism

Question 23

Effects X Zi (2)

Answer 23

• chlorosis spots on leaves

- stunted growth

Question 24

Function of I (Fe) (2)

Answer 24

• cofactor for chlorophyll synthesis

- growth of young plants

Question 25

Effects X I (Fe) (1)

Answer 25

-Young leaves yellowish

Question 26

Function of Co (2)

Answer 26

- nitrogen metabolism & photosynthesis | - growth, repro & flower

Question 27

Effects X Co (3)

Answer 27

- young shoot apex dead - brown spot on terminal leaves - stunted

Question 28

Functions of Mn (2)

Answer 28

- activates photosynthetic enzymes | - cell respi & nitrogen metabolism

Question 29

Effects X Mn (2)

Answer 29

- network dark green leaf veins | - light brown / grey spots between leaf veins

Question 30

Functions of Ni (1)

Answer 30

-involved in urea breakdown --> ammonia [used by plant]

Question 31

Effects X Ni (3)

Answer 31

- stunted growth - reduce crop production - burnt effect at leaf ends [urea accumulation]

Question 32

Function of Bo (2)

Answer 32

- calcium uptake in roots & sucrose translocation | - carbohydrate metabolism & pollen formation

Question 33

Effects X Bo (2)

Answer 33

- terminal buds dead & abnormal growth | - leaves thicker, rolled up & fragile

Question 34

Functions of Mo (Molybdenum) (1)

Answer 34

-nitrogen fixation & nitrate reduction during protein synthesis

Question 35

Effects X Mo ()

Answer 35

- chlorosis between matured leaf veins - leaf become pale green - reduces crop production

Question 36

Wilhelm Knop made...

Answer 36

Knop's solution

Question 37

Knop's solution contains...

Answer 37

CaPoPo MagI DI Calcium nitrate, Potassium nitrate, Potassium dihydrogen phosphate, Magnesium sulphate, Iron (II) phosphate, Distilled water

Question 38

Function of roots include...... (2)

Answer 38

- provide support & strength to anchor the plant in the soil | - absorb water & mineral salts from soil & transport them to the stem & leaves

Question 39

Imagine the Root structure.

Answer 39

Root collar, primary root, lateral root, root hair, root cap

Question 40

Function of ROOT COLLAR

Answer 40

connected to the base of plant