Free Plant Nutrition and Transport MCQs with Answers
162 Plant Nutrition and Transport MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Plants require macronutrients and micronutrients for growth, and mineral deficiencies produce recognizable symptoms. Transport involves water and minerals through xylem by transpiration pull, cohesion and adhesion, while phloem translocates sugars from sources to sinks. Root pressure and transpiration are distinct mechanisms.
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162 questions · page 8 of 9
- A. Cristae to stroma
- B. Stroma to grana
- C. Grana to cristae
- D. Grana to stroma
Explanation: Photosynthesis occurs in 2 steps:1. Light-dependent reactions2. Light-independent reactionsLight-dependent reactions occur on the…
Correct answer: Grana to stroma- A. 4-ATP
- B. 36-ATP
- C. 32-ATP
- D. NO-ATP
Explanation: Photorespiration (also known as the C2 cycle) is a metabolic process in plants where the enzyme rubisco combines O2 with RuBP in the…
Correct answer: NO-ATP- A. PGA
- B. PGAL
- C. RUBP
- D. RUBISCO
Explanation: In the third and final stage of the Calvin cycle i.e. regeneration of RuBP, 1 glyceraldehyde 3-phosphate molecule is used to create…
Correct answer: RUBP- A. Thin & elastic
- B. Thick & elastic
- C. Thin & non elastic
- D. Thick & non elastic
Explanation: Guard cells are pairs of specialized epidermal cells that work to control excessive water loss, closing on hot, dry, or windy days and…
Correct answer: Thin & elastic- A. Phosphorus
- B. Zinc
- C. Iron
- D. Iodine
Explanation: Calcium, sodium, magnesium, phosphorus and potassium are sometimes included as macronutrients because they are required in relatively…
Correct answer: Phosphorus- A. Iron
- B. Copper
- C. Zinc
- D. Magnesium
Explanation: Magnesium (Mg2+) is an essential macronutrient of living cells and is the second most prevalent free divalent cation in plants.
Correct answer: Magnesium- A. Macronutrients
- B. Micronutrients
- C. Trace elements
- D. Minor elements
Explanation: Hydrogen, magnesium, nitrogen, and phosphorus all are macronutrients. Macronutrients are the nutrients we need in larger quantities that…
Correct answer: Macronutrients- A. Kidney shape
- B. Oval
- C. Rounded
- D. Dumbbell shaped
Explanation: The correct answer is dumbbell-shaped. Monocots have stomatal guard cells that are dumbbell-shaped, allowing for better regulation of gas…
Correct answer: Dumbbell shaped- A. Glycolate --> Glycine, Glycine --> Serine + CO2, RuBP + O2 --> Glycolate
- B. RuBP + O2 --> Glycolate, Glycine --> Serine + CO2, Glycolate --> Glycine
- C. RuBP + O2 --> Glycolate, Glycolate --> Glycine, Glycine --> Serine + CO2
- D. Glycine --> Serine + CO2, RuBP + O2 --> Glycolate, Glycolate --> Glycine
Explanation: Photorespiration is a process in plants where RuBP (Ribulose Bisphosphate) reacts with oxygen, rather than carbon dioxide, leading to a…
Correct answer: RuBP + O2 --> Glycolate, Glycolate --> Glycine, Glycine --> Serine + CO2- A. Blue, green, brown, or red
- B. Orange, yellow, blue, or brown
- C. Yellow, orange, red, or brown
- D. Blue, red, orange, or brown
Explanation: Carotenoids are accessory pigments found in plants that include colors such as yellow, orange, red, and brown.
Correct answer: Yellow, orange, red, or brown- A. Transportation
- B. Transduction
- C. Translocation
- D. Transformation
Explanation: The correct answer is translocation. This process specifically refers to the movement of organic solutes such as sugars and amino acids…
Correct answer: Translocation- A. Zinc (Zn)
- B. Iron (Fe)
- C. Cobalt (Co)
- D. Manganese (Mn)
Explanation: Zinc (Zn) deficiency is directly linked to delayed wound healing because zinc is integral to the processes of collagen synthesis and cell…
Correct answer: Zinc (Zn)- A. Iron
- B. Chlorine
- C. Copper
- D. Potassium
Explanation: The correct answer is potassium. Potassium is classified as a macromineral, not a micronutrient.
Correct answer: Potassium- A. Xylem
- B. Phloem
- C. Cortex
- D. Epidermis
Explanation: The cambium is a layer of actively dividing cells in plants that contributes to secondary growth by producing new cells.
Correct answer: Phloem- A. 500 mg
- B. 400 mg
- C. 800 mg
- D. 1800 mg
Explanation: Phosphorus is crucial for numerous bodily functions, including the formation of bones and teeth, and it plays a role in how the body uses…
Correct answer: 800 mg156. Macronutrients are:
- A. K-Mg-N-P
- B. Cu-Mg-Mn-S
- C. Mn-S-P-Cu
- D. Mg-Mn-Ca-P
Explanation: The macronutrients are K-Mg-N-P (Students should learn this as it is a fact)
Correct answer: K-Mg-N-P- A. Cu ions
- B. Ca ions
- C. Mg ions
- D. K ions
Explanation: The correct answer is Cu ions. Macronutrients are elements required in large quantities for plant growth.
Correct answer: Cu ions- A. Plastocyonin
- B. Cytochromes
- C. Plastoquinones
- D. All of the above
Explanation: Plastoquinones are molecules that serve as electron carriers in the process of photosynthesis.
Correct answer: All of the above- A. Chlorophyll a
- B. Chlorophyll r
- C. Chlorophyll b
- D. Chlorophyll d
Explanation: Chlorophyll a is a pigment found in the chloroplasts of plant cells. It absorbs light energy from the sun, particularly in the blue and…
Correct answer: Chlorophyll a- A. Industrial fixation
- B. Biological fixation
- C. Atmospheric fixation
- D. All of the above
Explanation: In industrial fixation, nitrogen gas (N2) is converted into a usable form, such as ammonia (NH3), through a process called the Haber-Bosch…
Correct answer: Industrial fixation