CCA Crop Growth and Development 2

Question 1

Which plant hormone is primarily responsible for promoting stem elongation and fruit development?

Accepted Answer

Gibberellin

Answer

Gibberellins promote cell elongation, stem growth, and fruit development in many crop species.

Question 2

The process by which a plant converts light energy into chemical energy is called:

Accepted Answer

Photosynthesis

Answer

Photosynthesis uses sunlight, CO2, and water to produce glucose and oxygen in chloroplasts.

Question 3

What is the term for the minimum number of days required for a biennial crop to complete its life cycle?

Accepted Answer

Juvenility phase

Answer

The juvenility phase is the early growth period during which plants are incapable of flowering, regardless of environmental conditions.

Question 4

Which of the following best describes indeterminate crop growth habit?

Accepted Answer

Plant continues vegetative growth while flowering and fruiting simultaneously

Answer

Indeterminate plants like tomatoes and soybeans continue vegetative and reproductive growth concurrently throughout the season.

Question 5

In corn (maize), the V6 growth stage refers to:

Accepted Answer

Six visible leaf collars

Answer

Corn vegetative stages are designated by the number of visible leaf collars, so V6 means six leaf collars are visible.

(CCA) Certified Crop Advisor Practice Test