Which statement applies specifically to angiosperms?

A) The sporophyte is diploid.
B) The sporophyte produces two distinct types of spores.
C) The flower is a diploid structure produced by the sporophyte.
D) The microsporocyte develops into the pollen grain.
E) Two sperm are released by the male gametophyte.

If the pericycle was missing, how would this affect a plant?

A) There would be no branch roots.
B) There would be no root hairs.
C) There would be no xylem and phloem.
D) The meristem would not be present.
E) The root would not be able to store starches.

Considering the mechanisms of innate immunity, which of the following pairs is accurately matched?

A) Neutrophils - increase in number in response to bacterial infections
B) Interferons - assist antibodies in the destruction of pathogens
C) Complement - slow the spread of viral infections
D) Eosinophil - recognize abnormal cells, such as cancer cells

What is the only source of all new alleles?

A) Mutation
B) Gene flow
C) Genetic drift
D) Natural selection
E) Genetic polymorphism

The group of plants that has the most species is the ____.

A) mosses
B) ferns
C) gymnosperms
D) dicots
E) monocots

A chromosome's gene sequence that was ABCDEFG before damage and ABCFG after is an example of a(n) ____.

A) inversion
B) deletion
C) duplication
D) translocation
E) crossing over

Which of the following is not a reason that attempts to unionize the steel industry in the early 1900s failed?

A) Unions wasted resources fighting over jurisdictional issues.
B) There was little union interest in organizing steelworkers.
C) Steel companies used aggressive tactics of the open shop movement.
D) Individual unions refused to cooperate together to fight the steel companies.

The part of the circulation involved with pumping blood to and from the lungs is the

A) systemic circuit.
B) internal respiration circuit.
C) microcirculation circuit.
D) pulmonary circuit.
E) ECG circuit.

hydrophobic

A) carbohydrates
B) proteins
C) lipids
D) ​nucleic acids

Some of the changes that are attributed to aging are actually brought about by poor health habits. One of these is osteoporosis, which could be prevented by

A) adequate calcium intake and eating a high-protein diet.
B) avoiding cigarettes, an adequate calcium intake, and exercise.
C) exercise and a high-protein diet.
D) drinking adequate amounts of water, and exercising.
E) a low-fat and protein diet.