Ag Bio Spring Final 25

Question 1

Why would a livestock producer use estrus synchronization?

Accepted Answer

To increase breeding efficiency and synchronize birthing

Question 2

What is heterosis?

Accepted Answer

Hybrid vigor

Question 3

How is a hybrid plant typically produced?

Accepted Answer

By crossbreeding two different plant varieties

Question 4

What is a purebred strain?

Accepted Answer

A strain that consistently reproduces the same traits

Question 5

What does the Organic Food Production Act of 1990 ensure?

Accepted Answer

National standards for organic labeling

Question 6

Which of the following lists the four compartments of the ruminant stomach in the correct order?

Accepted Answer

Reticulum, rumen, omasum, abomasum

Question 7

In oogenesis, how many egg cells are typically produced from one round of meiosis?

Accepted Answer

1

Question 8

Which plant characteristic is directly affected by photosynthesis efficiency?

Accepted Answer

Growth and production

Question 9

Microevolution refers to:

Accepted Answer

Small genetic changes within a population over a short time

Question 10

Which structure in RNA carries genetic messages?

Accepted Answer

mRNA

Question 11

What are three primary purposes of roots in a plant?

Accepted Answer

Water absorption, storage of food, and anchoring the plant

Question 12

What is the best definition of natural selection?

Accepted Answer

The survival and reproduction of organisms best suited to their environment

Question 13

Which of the following are examples of advancements in agriculture due to selective breeding?

Accepted Answer

Hybrid corn and disease-resistant wheat

Question 14

Who developed hybrid corn in the U.S.?

Accepted Answer

George Shull

Question 15

How can artificial insemination benefit a livestock operation?

Accepted Answer

It enables the use of superior genetics without needing to own the male

Question 16

A trait that improves an organism’s ability to survive and reproduce is called a(n):

Accepted Answer

Adaptation

Question 17

What is the gene pool of a population?

Accepted Answer

The total set of genes shared by all individuals in a population

Question 18

What is the function of the Cowper’s gland in the male reproductive system?

Accepted Answer

Secretes fluid to clean the urethra

Question 19

How many chromosome pairs do horses have?

Accepted Answer

32

Question 20

Which of the following is not one of the processes involved in reproduction?

Accepted Answer

Photosynthesis

Question 21

What is the primary function of DNA?

Accepted Answer

To store genetic instructions

Question 22

What does the Law of Dominance state?

Accepted Answer

Dominant factors override recessive ones

Question 23

Genetic drift is best described as:

Accepted Answer

The random change in gene frequencies, especially in small populations

Question 24

What does it mean when an animal "breeds true"?

Accepted Answer

Produces offspring with identical traits when mated with a similar animal

Question 25

Which hormone stimulates the ovary to begin follicle development?

Accepted Answer

FSH (Follicle Stimulating Hormone)

Question 26

What percent of an organism’s DNA comes from each parent?

Accepted Answer

50%

Ag Bio Spring Final 25

Questions 26

Ag Bio Spring Final 25

Questions 26