80 Questions
What defines vertebrates?
Presence of a backbone
Which phylum includes animals capable of ejecting long, highly-branched extensions from their head?
Phylum Nemertea
What characteristic is unique to Phylum Tardigrada?
Microscopic size
Which phylum is known for having a stalk-like anchor and a ring of cilia around their "mouths"?
Phylum Brachiopoda
What is the defining feature of marine invertebrates?
Lack of a backbone
What is the unique digestive feature shared by most cnidarians?
Digestive chambers
How do sponges reproduce through regeneration?
By releasing part of themselves to create a new animal
Which type of worms have a segmented body with organ structures in each segment?
Segmented worms
What distinguishes bivalves among mollusks?
Having two hinged shells
Which class of echinoderms includes sea cucumbers?
Holothuroidea
What is the primary use of animal body plans?
To classify and differentiate animals in evolutionary and developmental biology
Which type of symmetry is found in mammals, including humans?
Bilateral symmetry
What is the term for the absence of any specific type of symmetry in animals?
Asymmetry
What is a coelom in the context of animal body plans?
A true body cavity
What are animals with true tissues called?
Eumetazoans
Which group of invertebrates is characterized by a segmented body and an exoskeleton made of chitin?
Arthropods
What is the process called when male and female gametes combine to form a zygote?
Fertilization
What is the function of the biological clock in mammals?
Calibrating daily 24-hour cycles
What is the main function of an exoskeleton in arthropods?
Support and protection
Which of the following is NOT a body axis established after fertilization in multicellular animals?
Superior-inferior axis
Which layer is the outermost layer of cells in the early embryo?
Ectoderm
What is the primary function of the testicles in the male reproductive system?
Producing sperm
Which structure in the female reproductive system is responsible for gamete production?
Ovaries
What is the function of the cremasteric reflex in the male reproductive system?
Regulating body temperature
Which circuit in the circulatory system transports deoxygenated blood from the heart to the lungs?
Pulmonary circuit
What are some common health conditions that can impact the circulatory system?
Atherosclerosis, High Blood Pressure, Arrhythmias, Angina, Blood Clots
What is the main function of the heart in the circulatory system?
To pump deoxygenated blood to the lungs and oxygenated blood out to the body
What is coronary heart disease?
A condition where plaque builds up in the arteries of the heart
What is the role of the lymphatic system in relation to the circulatory system?
It acts as a drainage system for the interstitial fluid
What happens when the left side of the heart does not pump blood out of the heart efficiently?
Blood will back up in the lungs, making it difficult for the person to breathe
What is the primary function of red blood cells?
To carry oxygen from the lungs throughout the body
What is the role of the lymph nodes in the lymphatic system?
To filter out harmful microbes such as bacteria and viruses
What is the blood type that can donate blood to anyone?
Type O
What is the term used to describe a lower than normal number of red blood cells?
Anemia
What is the role of the lymphatic capillaries in the lymphatic system?
To gather fluid in the tissue spaces and deliver it to the lymphatic vessels
What is the phenomenon called when red blood cells clump together during a blood transfusion?
Agglutination
What is the role of lacteals in the lymphatic system?
To transport lymph from the small intestines
What is the term for the fluid trapped in the tissues of the body when it is not returned to the blood?
Edema
What is the role of the ABO blood group system?
To classify blood based on the presence or absence of A and B antigens on red blood cells
What is the role of the spleen in the lymphatic system?
To destroy mature red blood cells
What is the main component of the exoskeleton of arthropods that provides flexibility and sturdiness?
Chitin
In sexual reproduction, what is the female gamete called?
Egg
Which phylum includes animals such as crabs, lobsters, and shrimps?
Arthropods
Where is the biological clock found in mammals?
Brain (Hypothalamus)
For effective communication, which type of signal would be less useful at night?
Visual signal
Which type of body symmetry is found in mammals, including humans?
Bilateral symmetry
What is the term for animals with true tissues in the context of animal body plans?
Eumetazoans
What is the primary function of a coelom in the context of animal body plans?
To provide a true body cavity
Which of the following is NOT a location used to describe the position of structures in animals?
Lateral
What is the term for the absence of any specific type of symmetry in animals?
Asymmetry
What is the unique digestive feature shared by most cnidarians?
Digestive chambers
Which class of echinoderms includes sea cucumbers?
Holothuroidea
Which type of worms have a segmented body with organ structures in each segment?
Segmented worms
Which of the following is NOT a class of mollusks?
Arthropoda
What is the main function of the heart in the circulatory system?
To pump blood
Which organ in the female reproductive system receives the ovulated egg upon ovulation?
Fallopian tubes
Which primary germ layer in the early embryo is innermost?
Endoderm
What is the main function of the cremasteric reflex in the male reproductive system?
Regulate temperature by contracting the testicles
Which circuit in the circulatory system transports oxygenated blood from the heart to different parts of the body?
Systemic circuit
Which organ in the female reproductive system regulates sperm entry into the uterus?
Cervix
Which phylum is known for having animals with specialized stinging cells?
Phylum Coelenterata
Which phylum includes animals with a soft visceral mass often surrounded by a hard protective shell?
Phylum Mollusca
Which phylum is characterized by animals that have a hard exoskeleton, segmented body, and jointed appendages?
Phylum Arthropoda
Which phylum includes animals that are sessile (immobile) filter feeders?
Phylum Porifera
Which phylum includes animals that have a unique shape, with a small, pointy head and big rear?
Phylum Sipunculoidea
What is the primary function of the lymphatic system in relation to the circulatory system?
Acting as a drainage system for interstitial fluid
What happens when the left side of the heart does not pump blood out of the heart efficiently?
Blood will back up in the lungs, making it difficult for the person to breathe
What is the role of the lymphatic capillaries in the lymphatic system?
Producing lymph from interstitial fluid
What is coronary heart disease?
The buildup of plaque in the coronary arteries
What is the primary function of red blood cells in the body?
Transporting oxygen to body tissues
What is the primary function of hemoglobin in red blood cells?
To bind to oxygen
Which blood type can receive a blood transfusion from any other type?
Type AB
What is the term for the clumping together of red blood cells during a blood transfusion?
Agglutination
Which organ of the lymphatic system filters out harmful microbes such as bacteria and viruses?
Lymph nodes
What is the term used to describe the fluid trapped in the tissues of the body when it is not returned to the blood?
Edema
Which of the following is NOT a function of the lymphatic system?
Transporting deoxygenated blood
Which of the following is NOT a type of red blood cell antigen?
O antigen
What is the main function of the heart in the circulatory system?
To pump blood throughout the body
Which of the following is the outermost layer of cells in the early embryo?
Ectoderm
Which of the following is NOT a body axis established after fertilization in multicellular animals?
Superior-Inferior
Test your knowledge on animal body plans and symmetry, including features that differentiate animal body plans and the concept of body symmetry. Explore how animals are organized and classified in evolutionary and developmental biology.
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