FREE BIOLOGY AND STUDY GAMES ABOUT KINGDOM

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FREE BIOLOGY AND STUDY GAMES ABOUT KINGDOM

ANIMALIA EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -45 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Why are the Arthropoda regarded as the most successful animal phylum?

Answer:

very diverse + have adapted to live in many differnt enviroments in land/water/air. have an exoskeleton, jointed apendages + highly developed sensory organs

Question 2: What is the oldest living lineage of vertebrates?

Answer:

Jawless fish. They have a cartilaginous skeleton + most are fish parasites, feeding with their suction cup mouth.

Question 3: Platyhelminthes (main characteristics) + examples

Answer:

Bilateral symmetry, acelomate, flattened body, organ systems, gastrovacular cavity, free living or parasites

examples: flatworms :3 planaria :3 tapeworms

Question 4: What adaptions do amniotes show to life on land?

Answer:

Amniotic egg to prevent egg from dehydration and protection. Lung breathing + water resistant skin (scales/fur/feathers)

Question 5: Ray-finned vs lobefin fish

Answer:

Ray finned fish have rays of thin bones in their fins. Lobefin fish have a central bone for more movement/support

Question 6: What features limit amphibians to aquatic habitats?

Answer:

Amphibian's skin must stay smooth + moist for gas exchange. Thier reproductive cycle is also tied to water becuase their eggs need moisture to survive. (do not have ambiotic eggs)

Question 7: Actinopterygii (main characteristics) + examples

Answer:

ray finned fish! bony skeleton, opercalum (protective flap over gills), swim bladder, aquatic, flat scales

ex. clownfish, sea horse, moray eel

Question 8: Nematoda (main characteristics) + examples

Answer:

Cylindrical body, pseudocoelomate, bilateral symmetry, complete digestive system, free living or parasites, exoskeleton that sheds

examples: roundworms

Question 9: Diploblastic

Answer:

Only 2 germ layers (endo and ectoderm)

ex. cnidaria

Question 10: Mollusca (main characteristics) + examples

Answer:

soft bodies (has a foot, visceral mass, mantle and generally a shell), coelomates, organ systems, bilateral symmerty, complete digestive, open circulatory system (except cephalopods)

examples: snail, sea slug, octopus, scallop

Question 11: Osteichthyes

Answer:

Bony fish, includes Actinopterygii + lobefin fish

Question 12: Amphibians (main characteristics) + examples

Answer:

Metamorphosis (aquatic tadpole, semi-terrestrial adult), smooth + moist skin for has exchange, 3 chambered heart, ectotherms

Question 13: 3 lineages of mammals

Answer:

Monotremes: egg laying, no nipples, cloaca (ex. platypus)

Marsupials: pouch for young to nurse while it completes embryonic development (ex. kangaroo)

Eutherians: placental, embryos complete development within the uterus

Question 14: Vertebrates (list all)

Answer:

Petromyzonontida, Chondrichthyans, Osteichthyes, Amphibians, Non-avain reptiles, birds + mammals

Question 15: Mammals (main characteristics)

Answer:

mammary (milk) glands, hairy skin, differntiated teeth, largeest brains, 4 chambered heart, endotherms

Question 16: Tetrapod traits (4)

Answer:

• limbs with digits, neck, lung breathing, double circulation

Question 17: Non-avain reptiles (main characteristics)

Answer:

exclusive lung breathing, scaly keratinized skin, amniotic egg w/ leathery shell, 3 chambered heart (croc.4) ectotherms

Question 18: Petromyzonontida (main characteristics) + examples

Answer:

jawless fish! skull but no jaw, cartilaginous skeleton, aquatic, small brain, most are fish parasites

ex. lamprey Question 19: What type of symmetry do echinoderms exhibit? Why are they in the clade bilateria?

Answer:

Radial symmetry as adults + bilateral as larvae. They are in the clade bilateria becuase they have bilateral symmestry as they develop, pointing towards bilateral ancestors

Question 20: Acoelomates (definition)

Answer:

no body cavity (ex. platyhelminthes)

Question 21: What are the 2 variations of body plans in cnidaria?

Answer:

Medusa: mobile (blows water out of center cavity) bell shaped

Polyp: sessile, tube/cylinder shaped with mouth + tentacles

Question 22: Radial vs. Bilateral symmetry

Answer:

Radial: typically sessile organisms, divided on multiple (4, 5, 6, 8, 10 etc.) planes of symmetry Bilateral: allows better movement, cephalization, divided on 2 planes of symmetry

Question 23: Coelomate (definition)

Answer:

fluid-filled body cavity completly lined by mesoderm tissue. (allows for more complex organ systems, better circulation + support)