WorksheetsG9 Unit Test 1 Review
Total questions: 16
Worksheet time: 18mins
Meiosis produces...
gametes
fertilization
variation
none
Which is an example of artificial selection?
The farmer sows only the seeds of plants that had a high yield in the previous crop.
The farmer sows only seeds from the previous year's crop.
The farmer sows a combination of seeds from the previous year's crop and seeds from a neighboring farmer's crop.
The farmer sows a larger number of seeds than normal.
Which of the following is NOT part of Charles Darwin's theory of natural selection?
Organisms produce more offspring than can survive.
There is always variation among the offspring of an organism.
Some changes that take place in an organism during its lifetime may be passed on to its offspring.
Some variations increase the chance of an organism surviving to reproduce.
Where do seeds form?
Ovary
Anther
Stigma
Pollen tube
Where does fertilization happen in flower?
Stigma
Pollen tube
Anther
Ovary
One of the first uses of modern biotechnology was...
Cloning of mammal
Insertion of a bacterial insulin gene into human cells.
Insertion of human insulin gene to bacteria.
Insertion of a herbicide tolerance gene into human cells.
What is continuous variation? Give examples of continuous variation.
What is a discrete variation? Give examples of discrete variation.
Female reproductive organ of a flower.
Stamen
Anther
Ovary
Egg
A genetic code is made up of...
The sequence of nitrogen bases—A, C, G, T
Pairs of chromosomes
Proteins that make up a particular stretch of DNA.
The arrangement of sugar and phosphate groups along the DNA molecule.
Supplies food to the embryo in seeds.
Cotyledon
Seed coat
Radicle
Epicotyl
Cancer is...
A recessive trait
A dominant trait
A mutation
A continuous variation
Which is NOT one of the benefits of internal fertilization?
The gametes are protected from a harsh environment.
The sperm has a better chance of reaching the egg.
A larger number of gametes by both sexes are produced.
The gametes are protected from predators.
A bioindicator species is one that...
is sensitive to human impacts on the environment.
has been forced out of its normal range.
is widely hunted.
live near human settlements.
What is the formula for diversity index?
What is a mutation? Give two mutagens that people are exposed to on a regular basis.
