Plant nutrition Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

Leaf adaptations for photosynthesis

A

1) broad & flat ; larger SA to absorb more sunlight & CO2
2) palisade mesophyll cells contain many chloroplasts ; chlorophyll ; efficient to absorb light
3) spongy mesophyll cells surrounded by many air spaces ; rapid diffusion of gases
4) very thin ; light & CO2 can penetrate easier to reach all mesophyll cells
5) numerous stomata allowing exchange of gases
6) network of veins containing xylem to bring water to the mesophyll cells & phloem to carry away food produce

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Fate of glucose formed during photosynthesis

A
  • used during respiration to produce energy
  • converted into sucrose ; transported along phloem to growing regions & storage organs
  • converted into starch ; stored in plant
  • converted into cellulose ; new cell walls
  • converted into fats & oils ; constituents of cell membrane & storage substance inside seeds
  • combine with nitrate ions ; converted into amino acids ; used to make proteins
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Importance of photosynthesis

A
  • all forms of life depend on the chemical energy found in food produced
  • animals, consumers depend directly / indirectly on plants, producers for their food supply
  • oxygen produced used for respiration in most organisms
  • important role in carbon cycle ; regulating CO2 concentration in atmosphere
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Limiting factors of photosynthesis

A
  • light intensity
  • temperature
  • CO2 concentration
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Importance of nitrogen containing ions

A

combine with carbohydrates to form :
- chlorophyll
- amino acids
- proteins
- nucleic acids
-> allows healthy growth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Deficiency of lack of nitrogen containing ions

A

poor, stunted growth ;
chlorosis ( small yellow leaves )

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Importance of magnesium ions

A

required to make chlorophyll ; part of structure of chlorophyll molecules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Deficiency of lack of magnesium ions

A

small yellow leaves & overall growth reduction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly