Animal Systems

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?

• The nervous system senses the biting flies and sends a signal to the muscular system to move.

• The circulatory system senses the biting flies and sends a signal to the nervous system to move.

• The muscular system senses the biting flies and sends a signal to the integumentary system to move.

• The integumentary system senses the biting flies and sends a signal to the circulatory system to move.

Answer explanation

The nervous and muscular systems in horses help the animal repel biting flies by ear twitching, head tossing, leg stomping, and tail swishing. This response is a result of the nervous system sensing the biting flies and sending a signal to the muscular system of the animal.

Tags

NGSS.MS-LS1-3

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

• Heart rate increases -> Blood vessels constrict -> Blood pressure increases

• Blood vessel is damaged -> Platelets begin to clump -> Blood vessel ruptures

• Blood sugar levels rise -> Pancreas secretes insulin -> Blood sugar continues to rise

• Body temperature increases -> Glands release sweat -> Body temperature decreases

Answer explanation

Sweat glands are part of the excretory system that is located within the integumentary system. When body temperature increases, the glands release sweat, and body temperature decreases.

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?

• Endocrine

• Integumentary

• Immune

• Circulatory

Answer explanation

The circulatory system transports blood to and from the heart and the rest of the body. Nutrients and gases, such as oxygen, are dissolved in the blood. The circulatory system must interact with the respiratory and digestive systems to transport the nutrients and gases in the blood throughout the body.

Tags

NGSS.MS-LS1-3

Which sequence represents the levels of organization found in a multicellular organism, from smallest to largest?

• Cell, Tissue, Organ, Organ System

• Organ System, Organ, Tissue, Cell

• Tissue, Organ, Organ System, Cell

• Cell, Organ System, Organ, Tissue

Answer explanation

The order of cell, tissue, organ, and organ system represents the smallest to largest levels of cellular organization.

Tags

NGSS.MS-LS1-3

Which part of the digestive system is primarily responsible for nutrient absorption?

• Stomach

• Small intestine

• Large intestine

• Esophagus

What type of circulatory system do arthropods have?

• open

• closed

Which body system helps remove waste?

• Excretory System

• Circulatory System

• Endocrine System

• Nervous System

What is the primary function of the body system shown?

• The protection of vital organs from injury

• The chemical breakdown of food into smaller pieces

• The transport of nutrients, water, and oxygen to body cells

• The production of hormones that regulate growth and metabolism

The organism's ability to maintain equilibrium in their body.

• Homeostasis

• Heterotroph

• Prokaryotic

• Autotrophic

Tags

NGSS.HS-LS1-3

A tiger cub has a pattern of stripes on its fur that is similar to that of its parents. Where are the instructions stored that provide information for a tiger's fur pattern?

• in cytoplasm inside cells

• on genes within chromosomes

• on the cell membrane

• in the mitochondria

Tags

NGSS.MS-LS3-1