Free CPP Plant Propagation & Growth Management Questions and Answers

Question 1

Which propagation method involves placing a plant stem in soil while still attached to the parent plant?

Accepted Answer

Layering

Answer

Layering is a propagation method where a plant stem is encouraged to root while still attached to the parent plant. A section of the stem is typically buried in soil, and once roots develop, the new plant is then detached. This method provides the new plant with continuous support and nutrients from the parent until it can sustain itself independently.

Question 2

Which plant hormone is most associated with cell elongation and shoot growth?

Accepted Answer

Gibberellins

Answer

Gibberellins are a group of plant hormones primarily associated with promoting cell elongation and overall shoot growth. They play a crucial role in stimulating stem and internode lengthening, breaking seed dormancy, and influencing flowering and fruit development. Their action leads to taller, more elongated plant structures.

Question 3

Which propagation method is best for maintaining genetic uniformity?

Accepted Answer

Cuttings

Answer

Cuttings are the best propagation method for maintaining genetic uniformity because they produce clones of the parent plant. A cutting is a vegetative piece (stem, leaf, or root) taken from a single parent plant, and the new plant that develops from it is genetically identical. This ensures that all desirable traits of the parent are preserved.

Question 4

What is the function of cytokinin in plants?

Accepted Answer

Promote cell division

Answer

Cytokinins are a class of plant hormones that primarily promote cell division (cytokinesis) in plant roots and shoots. They play a vital role in regulating cell growth and differentiation, often working in conjunction with auxins to control plant development. Cytokinins also help delay the aging of leaves and promote bud development.

Question 5

What is the main advantage of seed propagation?

Accepted Answer

Genetic diversity

Answer

The main advantage of seed propagation is the genetic diversity it introduces. Since seeds result from sexual reproduction, combining genetic material from two parent plants, the offspring exhibit variations. This diversity can lead to new varieties with improved traits, increased adaptability to changing environments, and enhanced disease resistance.

CPP - Certified Plant Professional Practice Test

CPP - Certified Plant Professional Practice Test

Free CPP Plant Propagation & Growth Management Questions and Answers