A flower that has both male and female reproductive structures is shown.

Which statement best describes an interaction that will allow a flowering plant to reproduce by self-pollination?

Students set up a controlled experiment by growing the same type of seedlings (plants) in two different locations. After a period of time, the students observed the seedlings and recorded their observations in the table shown.

Which caused the shoots of the seedlings on the windowsill to bend toward the window?

Positive thigmotropism is a response in plants in which they can move and grow toward an object the plant comes into physical contact with, usually curling around the object.

This response of the shoot system benefits the plant by allowing the plant to -

Students studying the interaction among the reproductive parts of flowering plants make the graphic organizer shown.

Which terms best complete the numbered blanks in the flowchart?

Water, sugar, and other important nutrients need to be transported from one part of a plant to another. Which statement correctly describes the interaction of the root and shoot systems during nutrient transport?

In the late 19th century, Charles Darwin and his son performed a series of experiments on young grass seedlings to observe the plants' response to sunlight. They grouped the seedlings as shown in the list

• They removed the tips of one group of seedlings.

• They placed opaque caps over the tips of a second group of seedlings.

• They placed transparent caps over the tips of a third group of seedlings.

The results of the experiment are shown in the diagram.

Based on the diagram, which statement BEST best supports the results of the experiment?

Gibberellins are hormones produced in the root tips of plants. The plant use these hormones to stimulate the growth of shoots.

How are gibberellins able to affect other parts of the plants?

Biting flies can transmit diseases and cause loss of blood for animals in nature. Horses have developed behaviors to repel biting flies such as ear twitching, head tossing, leg stomping, and tail swishing.

Which statement best describes the interaction between body systems that allows horses to repel biting flies?

Which four body systems interact to allow a person to sneeze?

The fuzzy millipede, Polyxenus fasciculatus, is found in Texas and is preyed upon by most species of ants. To protect itself against the ants, it ejects fibers from its skin found in tufts located at the tail end of its body. The tufts have hooks at the tips and barbs along their length that lock and interlink with the ant's setae, small hairs that cover the body of the ant.

When an ant attacks, the millipede flexes its back end toward the ant and wipes the tufts against it. As the ant attempts to remove the tufts, it entangles itself more, becoming immobilized.

Which two systems most directly interact in the fuzzy millipede's defense against ants?

A feedback mechanism in the human body is shown.

Based on the diagram, which two systems interact to maintain homeostasis?

Which sequence best describes an interaction between the integumentary and excretory systems that helps maintain homeostasis?

Both the respiratory system and the digestive system involve the uptake of necessary molecules from an animal's surroundings. Alveoli are tiny sacs that aid in the exchange of carbon dioxide and oxygen in the lungs. Intestinal villi are tiny projections along the lining of the intestines used to take in nutrients from food passing through.

Which system must interact with the respiratory and digestive systems to transport gases and nutrients throughout the body?

The diagram below shows changes in blood pressure over time.

Vasodilation and vasoconstriction occur because blood---

Breaking down food for nutrients involves many body systems. A student made a partial list of the processes that occur.

Which body systems interact most directly in the three listed processes?

During the final stages of human gestation, receptors for the hormone oxytocin increase on the smooth muscle cells of the uterus. The release of oxytocin during labor stimulates the smooth muscle tissue in the wall of the uterus. The vigorous contraction of the uterine smooth muscle helps push the baby through the birth canal so that delivery can occur.

This process involves the interaction of which organ systems?

Testosterone is a hormone released from the pituitary gland in both males and females during puberty. On average, males from age 10-15 experience a rapid increase in testosterone.

For males, increasing testosterone levels leads to:

• Increased height and mass

• Deepened voice

• Increased sweat production

• Development of facial hair, pubic hair, and body hair

What body systems are triggered as a result of increased testosterone levels during male puberty?

Select TWO correct answers.

Jason goes for a run outside. After a few minutes, he notices that he is breathing heavily to meet the increased demand for oxygen. He also notices that his heart rate has increased. After he sits down to rest, he notices that his breathing has returned to normal, and his heart rate has decreased.

Identify which three body systems are interacting in this scenario and explain their roles in maintaining homeostasis.

Which statements about the transportation of these substances within the plant is true?

Which statements support the answers to part A.

Part B

Which statement BEST supports the answer to Part A?