Y2 Nutrition in Plants

What is a more reliable measure of plant growth?

• Fresh mass

• Dry mass

In which temperature range does photosynthesis occur at the highest rate?

• 10 to 15°C

• 18 to 27°C

• 30 to 35°C

• 40 to 45°C

Which element is a component of proteins and chlorophyll in plants?

• Calcium

• Nitrogen

• Potassium

• Phosphorus

What is the role of potassium in plants?

• Component of proteins

• Component of chlorophyll

• Component of nucleic acids

• Activation of enzymes

What is the process by which molecules are transported against a concentration gradient?

• Passive transport

• Active transport

• Diffusion

• Osmosis

What is/are the role/s of Rhizobium bacteria in plants?

• Convert atmospheric nitrogen to ammonia

• Convert proteins to amino acids

• Convert ammonia to proteins

What are the symptoms of a nutrient deficiency in plants?

• Stunted growth

• All of the above

• Yellowing between leaf veins

• Scorched leaf edges

Which of the following is a symptom of nitrogen deficiency?

• Scorched leaf edges

• Fewer seeds and fruits

• Small leaves with reddish-purple tint

• Stunted growth

Which of the following is a symptom of potassium deficiency?

• Scorched leaf edges

• Fewer seeds and fruits

• Small leaves with reddish-purple tint

• Stunted growth

Which of the following is a symptom of phosphorus deficiency?

• Scorched leaf edges

• Fewer seeds and fruits

• Purplish veins in older leaves

• Stunted growth