Lesson 4.5.1
4.5.1 Water and inorganic ions for plants Quiz: Pearson Edexcel Biology, Unit 4
20 questions
In partnership with Revision Ninja
Lesson 4.5.1, Water and inorganic ions for plants: 20 multiple choice questions for the Pearson Edexcel Biology (9BI0), Unit 4: Biodiversity and Natural Resources, written with Revision Ninja.
Host it live on the board and students join with a game code on their own devices, or revise alone with Free Play. The answers are revealed in the game.
The 20 questions
-
Which ion is a component of chlorophyll?
- Potassium
- Calcium
- Nitrate
- Magnesium
-
Which ion is used to make amino acids and nucleotides in plants?
- Sodium
- Calcium
- Chloride
- Nitrate
-
Which compound essential for plant cell wall structure is formed using calcium ions?
- Calcium silicate
- Calcium carbonate
- Calcium pectate
- Calcium phosphate
-
What primary role does water play in the chemical reactions of photosynthesis?
- Product
- Inhibitor
- Reactant
- Catalyst
-
Which mineral deficiency typically causes interveinal chlorosis in older leaves?
- Magnesium
- Sodium
- Boron
- Calcium
-
What main role does cell turgor pressure play in non-woody plant stems?
- Enabling active transport
- Increasing transpiration rate
- Preventing water loss
- Providing structural support
-
Inorganic phosphate ions are directly required by plants to synthesize which molecule?
- Sucrose
- Cellulose
- Starch
- ATP
-
Why do older plant leaves turn yellow first during nitrate deficiency?
- Nitrogen is redistributed
- Young leaves store nitrogen
- Nitrate blocks photosynthesis
- Nitrate degrades chlorophyll
-
Which mineral ion is immobile in plants, causing deficiency symptoms in new tips first?
- Magnesium
- Nitrogen
- Calcium
- Potassium
-
What is the primary role of magnesium ions in green plants?
- Chlorophyll synthesis
- ATP hydrolysis
- Cell wall formation
- Protein synthesis
-
In an investigation on nitrate deficiency in plants, what is the independent variable?
- Chlorophyll content
- Nitrate concentration
- Plant growth rate
- Leaf surface area
-
When measuring plant fibre tensile strength, which factor must be controlled?
- Time to break
- Fibre diameter
- Force at breaking
- Mass of weights
-
Nitrate is needed for amino acids. A deficiency would most reduce which process?
- Protein synthesis
- Osmosis through membranes
- Starch hydrolysis
- Transpiration rate directly
-
Which process allows root hair cells to absorb mineral ions against a concentration gradient?
- Facilitated diffusion
- Simple diffusion
- Active transport
- Osmosis
-
What is the primary function of water in the light-dependent stage of photosynthesis?
- Proton absorber
- Carbon dioxide carrier
- Electron donor
- Enzyme activator
-
Why does excessive soil calcium reduce magnesium uptake in plants?
- Calcium degrades chlorophyll
- Calcium blocks stomata
- Magnesium precipitates calcium
- Carrier protein competition
-
Which inorganic ion is required for the synthesis of both proteins and chlorophyll?
- Calcium
- Nitrate
- Phosphate
- Magnesium
-
Why does a lack of turgor pressure prevent plant growth?
- Blocks cell division
- Stops DNA replication
- Prevents active transport
- Inhibits cell expansion
-
Plant fibre A breaks at 3 N while fibre B breaks at 1.2 N. What does fibre A have?
- Lower elasticity
- Higher tensile strength
- Greater flexibility
- Higher mass
-
Why does a deficiency in both nitrate and magnesium decrease the rate of photosynthesis?
- Blocked stomatal closure
- Increased transpiration rate
- Reduced chlorophyll synthesis
- Decreased root pressure
Related quizzes
- Biodiversity, endemism and threats to variety of life Quiz · 4.1.1 · 20 questions
- Measuring biodiversity: heterozygosity and diversity index Quiz · 4.1.2 · 20 questions
- Niche and adaptation of organisms Quiz · 4.2.1 · 20 questions
- Natural selection and evolution Quiz · 4.2.2 · 20 questions
- Hardy-Weinberg and reproductive isolation Quiz · 4.2.3 · 20 questions
- Classification, the species concept and the three domains Quiz · 4.3.1 · 20 questions
- Plant cell ultrastructure compared with animal cells Quiz · 4.4.1 · 20 questions
- Starch and cellulose structure Quiz · 4.4.2 · 20 questions
- Cellulose microfibrils and xylem, phloem and sclerenchyma Quiz · 4.4.3 · 20 questions
- Drug testing history and conditions for bacterial growth Quiz · 4.6.1 · 20 questions