Untitled Quiz

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What is the primary function of fibroblast cells in connective tissue?

Break down bone for remodeling
Synthesize fibers of connective tissue (correct)
Generate and transmit electrical impulses
Store triglycerides for insulation

Which type of connective tissue surrounds blood vessels and provides stability?

Bone tissue
Areolar (loose) connective tissue (correct)
Fibrous (dense) connective tissue
Adipose tissue

Which cell type is responsible for breaking down bone during remodeling?

Osteoclasts (correct)
Osteocytes
Osteoblasts
Fibroblasts

What characterizes smooth muscle tissue?

Involuntary and unstriated (A) Signup and view all the answers

Which type of cartilage is found in human ears and intervertebral discs?

Elastic cartilage (B) Signup and view all the answers

What is the main component of blood that functions as a fluid matrix?

Plasma (D) Signup and view all the answers

Which type of muscle tissue is characterized by intercalated discs?

Cardiac muscle (C) Signup and view all the answers

What structure in bone is responsible for maintaining bone health?

Osteocytes (D) Signup and view all the answers

Which structure in birds stores food temporarily and initiates the digestion process?

Crop (B) Signup and view all the answers

What is a unique feature of mammals compared to other vertebrates?

Single jaw bone: dentary (B) Signup and view all the answers

What function does the gizzard serve in birds?

Grinds food and aids digestion (B) Signup and view all the answers

Which of the following characteristics is NOT associated with reptiles?

Four-chambered heart (B) Signup and view all the answers

What is the primary function of the lungs in vertebrates?

Exchange oxygen and carbon dioxide (D) Signup and view all the answers

Which of the following statements about feathers is true?

They are modified scales that assist in insulation. (C) Signup and view all the answers

How does the metabolic rate of birds compare to that of other vertebrates?

Higher due to being endothermic. (B) Signup and view all the answers

Which of the following is NOT a characteristic of mammalian evolution?

Presence of feathers (D) Signup and view all the answers

What is the role of the cloaca in vertebrates?

Waste elimination (A) Signup and view all the answers

Which vertebrate group lays eggs that are laid on land?

Reptiles (B) Signup and view all the answers

What is the primary outcome of gastrulation in embryonic development?

Formation of germ layers (A) Signup and view all the answers

What are the key features of the cleavage stage in embryonic development?

Mitosis with no cell growth (D) Signup and view all the answers

Which structure is formed during the blastula stage?

Blastocoel (D) Signup and view all the answers

What are choanocytes primarily responsible for in Porifera?

Capture and ingest food (C) Signup and view all the answers

What defines acoelomates among bilaterally symmetrical animals?

Absence of a body cavity (D) Signup and view all the answers

Which organ is primarily responsible for feeding in mollusks?

Radula (C) Signup and view all the answers

What type of symmetry do Cnidarians exhibit?

Radial symmetry (A) Signup and view all the answers

Which of the following is a characteristic feature of gastropods?

A foot and mantle for locomotion (C) Signup and view all the answers

What function does the osculum serve in sponges?

Expels water from the sponge (D) Signup and view all the answers

What is the main function of the clitellum in earthworms?

Regulates reproduction and organogenesis (A) Signup and view all the answers

What is the significance of gemmules in freshwater sponges?

They aid in reproduction under stress (A) Signup and view all the answers

Which structure in crayfish provides protection for vital organs?

Carapace (B) Signup and view all the answers

Which anatomical structure in clams is responsible for expelling waste?

Anus (C) Signup and view all the answers

What is the defining feature of bivalves?

Two-part shell (D) Signup and view all the answers

What type of circulatory system is found in cephalopods like octopuses and squids?

Closed circulatory system (B) Signup and view all the answers

What is a key trait of the planarian's anatomy?

Centralized nervous system (C) Signup and view all the answers

How do insects primarily breathe?

Via spiracles and tracheae (C) Signup and view all the answers

Which of the following is a defining characteristic of annelids?

Segmentation (C) Signup and view all the answers

What type of movement is primarily associated with nematodes?

Whip-like motion (B) Signup and view all the answers

The purpose of the gizzard in earthworms is to:

Grind food into smaller pieces (D) Signup and view all the answers

Which feature is NOT typical of echinoderms?

Presence of notochord (B) Signup and view all the answers

What is a key characteristic that distinguishes jawed fishes from jawless fishes?

Hinged jaws for grasping food (A) Signup and view all the answers

What class of amphibians includes salamanders?

Urodela (B) Signup and view all the answers

What adaptation allows amphibians to be the first land vertebrates?

Lungs for breathing air (C) Signup and view all the answers

What is the role of Malpighian tubules in insects?

Excrete waste and assist in osmoregulation (A) Signup and view all the answers

The swim bladder in ray-finned fish is primarily used for:

Maintaining buoyancy (D) Signup and view all the answers

Cleavage (embryology)

Mitotic cell divisions in an embryo without cell growth.

Blastula

Hollow ball of cells formed during early embryonic development; cells migrate to form a hollow ball with an internal cavity called blastocoel.

Gastrula

Embryonic stage after blastula; characterized by invagination forming the blastopore and archenteron.