SAAT Biology Section 4 (Vertebrates) - تحصيلي

What passes through a chordate’s pharyngeal slits?

Water

Lampreys hold onto their prey with their

Suckers

How many groups of jawed fish still exist?

Two

What is the term for the fan-shamped array of bones in fish such as goldfish and tuna?

Ray-fin

The coelacanth is a type of

Lobe-finned fish

Which animals were the first to develop four limbs?

Amphibians

Lobe-finned fish that may be the closest living relatives to terrestrial vertebrates are

Lungfish

What is labelled B in the illustration of the sea squirt?

Notochord

The first recognizable vertebrates were?

Recognized fish

Sharks have skeletons made of

Cartilage

A fish’s swim bladder helps it

Stay to float

Which of the following is a membranous organ that develops in female mammals during pregnancy?

Placenta

A caecilian uses a hydrostatic skeleton to stiffin its body to

Move through soil

A physical feature unique to mammals is the

Middle ear with three bones

The function of mammalin mammary glands is to

Produce milk

The term for animals that have a mix of reptilian and mammalian features is

Monotreme

Marsupials differ from other mammals in that they

Bear sniff-immature young

Live young born after completeing fetal development are the offspring of what kind of mammal?

Eutherian

All vertebrates are classified in the phylum

Chordata

The earliest vertebrates were

Fish

A major difference between a hagfish and more evolved vertebrates is that it

Does not have vertebrae

What four features do all chordates share at some point during development?

Notochord, hollow nerve cord, pharyngeal slits, and a tail

Which term refers to an internal skeleton built of bone or cartilage?

Endoskeleton

The gills of a fish serve what essential function?

Take in oxygen from water

What structure did jaws evolve from?

Gill arches

The two remaining groups of jawed fish that still exist are the Osteichthyes and the

Chondrichthyes

How did the development of jaws affect vertebrates?

Gave them a huge advantage as predators

A sensory system used by fish to detect the movements of other fish in the water is called the

Lateral line

A tetrapod is a vertebrate that has

Four limbs

Where do caecilians live?

Underground

Which animals make up the largest group of living amphibians?

Frogs

All amphibians need a source of water to

Reproduce

What process must tadpoles undergo to grow into terrestrial adults?

Metamorphosis

The scales that cover sharks are called

Placoid

What type of circulatory system in fish?

One closed circuit

The fertilization in sharks is

Internal

Which fish is a bony fish?

Tuna

Which of the following has a three chambered heart?

Frogs have this heart

The scales that cover tuna fish

Discoid

Limbless amphibians are called

Cecilia

Which choice represents amphibians?

Ectotherms

Ali dissected an animal and found that it had an air bladder

Hamour

Which of the following is not associated with tadpoles?

Lungs

What distinguishes salamanders from lizards?

Salamander’s skin is moist

Where is the urea formed?

Liver

What do lion and crocodiles have in common?

Four chambered hearts

What is common between mammals and reptiles?

Amnion

What is the name of the structure shown in the picture?

Jacobsons organ

Fertilization in reptiles

Internal fertilization

In what era did the dinosaurs become extinct?

Jurassic

One characteristic of birds is that they

Have hind air sacs

A bird’s temperature is about

41 degrees Celsius

How many chambers does a bird’s heart have?

Four chambers

Food storage organ in birds is called

Crop

A muscular sac containing small stones for grinding food in birds

Intestine

The structure labeled C in the figure is called

Prosterior air sacs

When comparing the cecum of mammals, we find that

Herbivores have larger cecum that carnivores

The number of chambers in the stomach of ruminants

Four chambers in the stomach

Which of the following belongs to monotremes?

Shiny anteater

Whch of the following also belongs to monotremes?

Koalas

Placental mammals are distributed in

18 groups

Ali dissected an animal and found that it had a urinary bladder, which animal could it be?

Whale

Ahmed dissected an animal and found that it had a diaphragm muscle

A wolf

Which of the following animals is a marsupial?

Kangaroo

What is common between mammals and reptiles?

Amniotic sac