Chapter 12 - Propagation

HORT 201 Exam #3

True

Grapefruit is an example of hybridization 

False

Asexual reproduction in plants requires fertilization

True

Grape breeding has led to the development of drought-tolerant varieties

True

In classical breeding, hybridization combines traits from two parent plants

True

Asexual reproduction is commonly used in commercial agriculture to maintain desirable traits.

True

GMOs are created by directly modifying plant DNA

False

Plant propagation only occurs through sexual reproduction.

True

Suckering is a form of asexual reproduction where new shoots grow from the root system

True

Nucellar embryony is typical of citrus trees.

True

Asexual reproduction is common in both flowering and non-flowering plants

True

Plant breeding enhances resistance to diseases, pests, and environmental stresses.

True

Cutting is a method of asexual reproduction where a piece of the plant is used to grow a new plant

True

Plant propagation can be defined as the process of reproducing plants.

False

GMOs take longer to develop compared to classical breeding methods.

True

Asexual reproduction ensures faster propagation than sexual reproduction

False

Chimeras always occur naturally and cannot be created artificially

True

Plant breeding plays a crucial role in developing high-yield, climate-resilient crops.

True

Variegated plants are often chimeras

True

Sexual propagation is essential for breeding new plant cultivars

True

Hybridization is a method used in classical breeding

True

Mutation breeding involves using radiation or chemicals to create genetic changes

True

The main risk of asexual reproduction is the inability to adapt to environmental changes

True

A chimera is a plant composed of two or more genetically distinct types of tissue

True

Classical breeding involves selecting and crossing plants with desirable traits

True

Layering is when a stem is bent and covered with soil to encourage root formation.

False

Plants that reproduce asexually can adapt faster to environmental changes than sexually reproducing plants

True

Tomatoes have been bred to improve disease resistance

True

Division is a method where a plant is split into smaller sections, each capable of growing independently

False

Plants propagated asexually tend to be more resistant to diseases due to genetic uniformity.

True

Grafting is a technique that involves combining two different plant species to create a new individual plant.

True

Tissue culture requires a great deal of attention to sterilization protocols

False

Chimeras can only exist in ornamental plants and have no agricultural importance

False

Sexual propagation by seed results in genetically identical offspring

True

A major disadvantage of asexual reproduction is the lack of genetic diversity

False

Tissue culture allows for the mass production of genetically diverse plants

True

Lettuce breeding can focus on improving heat tolerance

True

Asexual reproduction produces genetically identical offspring

True

Citrus rootstocks have been bred for disease resistance

True

Sexual propagation by seed ensures genetic diversity and adaptability in plants, but also to inconsistent traits.

True

A major advantage of sexual propagation is the cost-effectiveness for large-scale production