CHT Plant Physiology & Growth

Question 1

Which plant hormone is primarily responsible for promoting cell elongation and is produced in the apical meristem?

Accepted Answer

Auxin

Answer

Cytokinin

Answer

Gibberellin

Answer

Abscisic acid

Question 2

What is transpiration in plants?

Accepted Answer

The loss of water vapor through stomata and leaf surfaces

Answer

The absorption of water through roots

Answer

The transport of sugars through phloem

Answer

The conversion of CO2 into glucose

Question 3

Which organelle is the primary site of photosynthesis in plant cells?

Accepted Answer

Chloroplast

Answer

Mitochondria

Answer

Nucleus

Answer

Vacuole

Question 4

What is the term for the seed dormancy-breaking process that requires exposure to cold, moist conditions?

Accepted Answer

Stratification

Answer

Vernalization

Answer

Scarification

Answer

Etiolation

Question 5

Which macronutrient is most critical for vegetative (leaf) growth and gives plants their green color?

Accepted Answer

Nitrogen

Answer

Phosphorus

Answer

Potassium

Answer

Calcium

Question 6

What is osmosis in the context of plant physiology?

Accepted Answer

Passive movement of water across a semipermeable membrane from low to high solute concentration

Answer

Movement of minerals through xylem against gravity

Answer

Active transport of sugars into phloem cells

Answer

Diffusion of CO2 into leaf cells through stomata

Question 7

Which process in plant respiration breaks down glucose to release energy in the absence of oxygen?

Accepted Answer

Anaerobic fermentation

Answer

Aerobic respiration

Answer

Photorespiration

Answer

Transpiration