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Sample Questions For Mt 2

35 Questions
Sample Questions For Mt 2
Questions and Answers
  • 1. 
    Sponges are most accurately described as      
    • A. 

      Marine predators

    • B. 

      Marine filter feeders

    • C. 

      Freshwater scavengers

    • D. 

      Aquatic filter feeders

    • E. 

      Aquatic predators

  • 2. 
    • A. 

      One of these

    • B. 

      Two of these

    • C. 

      Three of these

    • D. 

      Four of these

    • E. 

      Five of these

  • 3. 
    The heartworms that can accumulate within the hearts of dogs and other mammals have a psuedocoelom, an alimentary canal, and an outer covering that is occasionally shed. To which phylum does the heartworm belong?      
    • A. 

      Platyhelminthes

    • B. 

      Arthropoda

    • C. 

      Nematoda

    • D. 

      Acoela

    • E. 

      Annelida

  • 4. 
    Among the invertebrate phyla, phylum Arthopoda is unique in possessing members that have      
    • A. 

      A cuticle

    • B. 

      A ventral nerve cord

    • C. 

      Open circulation

    • D. 

      Wings

    • E. 

      Segmented bodies

  • 5. 
    The sharp, inch-long thorns of the crown-of-thorns sea star are its spines. These spines, unlike those of most other sea stars, contain a potent toxin. If it were discovered that crown-of-thorns sea stars do not make this toxin themselves, then the most likely alternative would be that this toxin is    
    • A. 

      Derived from the nematocysts of its prey.

    • B. 

      Absorbed from the surrounding seawater

    • C. 

      An endotoxin of cellulose-digesting bacteria that inhabit the sea star's digestive glands

    • D. 

      Injected into individual thorns by mutualistic corals which live on the aboral surfaces of these sea stars

  • 6. 
    The water vascular system of echinoderms    
    • A. 

      Functions as a circulatory system that distributes nutrients to body cells

    • B. 

      Functions in locomotion and feeding

    • C. 

      Is bilateral in organization, even though the adult animal is not bilaterally symmetrical

    • D. 

      Moves water through the animal's body during suspension feeding

    • E. 

      Is analogous to the gastrovascular cavity of flatworms

  • 7. 
    Both animals and fungi are heterotrophic. What distinguishes animal heterotrophy from fungal heterotrophy is that only animals derive their nutrition by    
    • A. 

      Preying on animals

    • B. 

      Ingesting it

    • C. 

      Consuming living, rather than dead, prey

    • D. 

      Using enzymes to digest their food

  • 8. 
    Which of the following is (are) unique to animals?    
    • A. 

      Cells that have mitochondria

    • B. 

      He structural carbohydrate, chitin

    • C. 

      Nervous conduction and muscular movement

    • D. 

      Heterotrophy

    • E. 

      Two of these responses are correct

  • 9. 
    What is the probable sequence in which the following clades of animals originated, from earliest to most recent? 1. tetrapods 2. vertebrates 3. deuterostomes 4. amniotes 5. bilaterians    
    • A. 

      5 → 3 → 2 → 4 → 1

    • B. 

      5 → 3 → 2 → 1 → 4

    • C. 

      5 → 3 → 4 → 2 → 1

    • D. 

      3 → 5 → 4 → 2 → 1

    • E. 

      3 → 5 → 2 → 1 → 4

  • 10. 
    If a multicellular animal lacks true tissues, then it can properly be included among the    
    • A. 

      Eumetazoa

    • B. 

      Parazoa

    • C. 

      Choanoflagellates

    • D. 

      Lophotrochozoa

    • E. 

      Bilateria

  • 11. 
    The most recently discovered phylum in the animal kingdom (1995) is the phylum Cycliophora. It includes three species of tiny organisms that live in large numbers on the outsides of the mouthparts and appendages of lobsters. The feeding stage permanently attaches to the lobster via an adhesive disk, and collects scraps of food from its host's feeding by capturing the scraps in a current created by a ring of cilia. The body is sac-like and has a U-shaped intestine that brings the anus close to the mouth. Cycliophorans are eucoelomate, do not molt (though their host does), and their mouth develops from the blastopore. Basing your inferences on information in the previous paragraph, to which clade(s) should cycliophorans belong? 1. Eumetazoa 2. Deuterostomia 3. Bilateria 4. Ecdysozoa 5. Lophotrochozoa    
    • A. 

      1 only

    • B. 

      1 and 3

    • C. 

      1, 3, and 5

    • D. 

      2, 3, and 4

    • E. 

      2, 3, and 5

  • 12. 
    Among the characteristics unique to animals is    
    • A. 

      Gastrulation

    • B. 

      Multicellularity

    • C. 

      Sexual reproduction

    • D. 

      Flagellated sperm

    • E. 

      Heterotrophic nutrition

  • 13. 
    When pathogenic fungi are found growing on the roots of grape vines, grape farmers sometimes respond by covering the ground around their vines with plastic sheeting and pumping a gaseous fungicide into the soil. The most important concern of grape farmers who engage in this practice should be that the    
    • A. 

      Fungicide might also kill the native yeasts residing on the surfaces of the grapes

    • B. 

      Lichens growing on the vines' branches are not harmed

    • C. 

      Fungicide might also kill mycorrhizae

    • D. 

      Sheeting is transparent so that photosynthesis can continue

  • 14. 
    Mycorrhizae are to the roots of vascular plants as endophytes are to vascular plants'    
    • A. 

      Leaf mesophyll

    • B. 

      Stem apical meristems

    • C. 

      Root apical meristems

    • D. 

      Xylem

    • E. 

      Waxy cuticle

  • 15. 
    Choose the option that best describes the relationship between the cell wall thickness of parenchyma cells versus sclerenchyma cells.    
    • A. 

      The cell walls of parenchyma cells are thinner than those of sclerenchyma cells

    • B. 

      The cell walls of parenchyma cells are thicker than those of schlerenchyma cells

    • C. 

      The cell walls of both types of cells are roughly equal

    • D. 

      The thickness of the cell walls for both types of cells is too variable for a comparison to be made

  • 16. 
    ________ is to xylem as ________ is to phloem.    
    • A. 

      Sclerenchyma cell; collenchyma cell

    • B. 

      Apical meristem; vascular cambium

    • C. 

      Vessel element; sieve-tube member

    • D. 

      Cortex; pith

    • E. 

      Vascular cambium; cork cambium

  • 17. 
    Which of the following root tissues gives rise to lateral roots?    
    • A. 

      Endodermis

    • B. 

      Phloem

    • C. 

      Cortex

    • D. 

      Epidermis

    • E. 

      Pericycle

  • 18. 
    All of the following cell types are correctly matched with their functions except A) mesophyll–photosynthesis. B) guard cell–regulation of transpiration. C) sieve-tube member–translocation. D) vessel element–water transport. E) companion cell–formation of secondary xylem and phloem.     
    • A. 

      Mesophyll–photosynthesis

    • B. 

      Guard cell–regulation of transpiration

    • C. 

      Sieve-tube member–translocation

    • D. 

      Vessel element–water transport

    • E. 

      Companion cell–formation of secondary xylem and phloem

  • 19. 
    Which of the following cells or tissues arise from lateral meristem activity?    
    • A. 

      Secondary xylem

    • B. 

      Leaves

    • C. 

      Trichomes

    • D. 

      Tubers

    • E. 

      Cortex

  • 20. 
    The innermost layer of the root cortex is the     
    • A. 

      Core

    • B. 

      Pericycle

    • C. 

      Endodermis

    • D. 

      Pith

    • E. 

      Vascular cambium

  • 21. 
    A plant developed a mineral deficiency after being treated with a fungicide. What is the most probable cause of the deficiency?    
    • A. 

      Mineral receptor proteins in the plant membrane were not functioning

    • B. 

      Mycorrhizal fungi were killed

    • C. 

      Active transport of minerals was inhibited

    • D. 

      The genes for the synthesis of transport proteins were destroyed

    • E. 

      Proton pumps reversed the membrane potential

  • 22. 
    The value for Ψ in root tissue was found to be -0.15 MPa. If you take the root tissue and place it in a 0.1 M solution of sucrose (Ψ = -0.23 MPa), the net water flow would    
    • A. 

      Be from the tissue into the sucrose solution

    • B. 

      Be from the sucrose solution into the tissue

    • C. 

      Be in both directions and the concentrations would remain equal

    • D. 

      Occur only as ATP was hydrolyzed in the tissue

    • E. 

      Be impossible to determine from the values given here

  • 23. 
    In plant roots, the Casparian strip is correctly described by which of the following?    
    • A. 

      It aids in the uptake of nutrients

    • B. 

      It provides energy for the active transport of minerals into the stele from the cortex

    • C. 

      It ensures that all minerals are absorbed from the soil in equal amounts

    • D. 

      It ensures that all water and dissolved substances must pass through a cell membrane before entering the stele

    • E. 

      It provides increased surface area for the absorption of mineral nutrients

  • 24. 
    What drives the flow of water through the xylem?     
    • A. 

      Passive transport by the endodermis

    • B. 

      The number of companion cells in the phloem

    • C. 

      The evaporation of water from the leaves

    • D. 

      Active transport by sieve-tube elements

    • E. 

      Active transport by tracheid and vessel elements

  • 25. 
    What is the main cause of guttation in plants?    
    • A. 

      Root pressure

    • B. 

      Transpiration

    • C. 

      Pressure flow in phloem

    • D. 

      Plant injury

    • E. 

      Condensation of atmospheric water

  • 26. 
    Which of these are amniotes?     
    • A. 

      Amphibians

    • B. 

      Fishes

    • C. 

      Egg-laying mammals

    • D. 

      Placental mammals

    • E. 

      More than one of these is correct

  • 27. 
    Which of the following are the only extant animals that descended directly from dinosaurs?    
    • A. 

      Lizards

    • B. 

      Crocodiles

    • C. 

      Snakes

    • D. 

      Birds

    • E. 

      Tuataras

  • 28. 
    Which shark structure is most analogous to a swim bladder full of gas?     
    • A. 

      Its lateral line system

    • B. 

      Its spiral valve

    • C. 

      Its liver

    • D. 

      Its dead-end nostrils

    • E. 

      Its gills

  • 29. 
    Vertebrates and tunicates share    
    • A. 

      Jaws adapted for feeding

    • B. 

      A high degree of cephalization

    • C. 

      The formation of structures from the neural crest

    • D. 

      An endoskeleton that includes a skull

    • E. 

      A notochord and a dorsal, hollow nerve cord

  • 30. 
    The body's automatic tendency to maintain a constant and optimal internal environment is termed    
    • A. 

      Balanced equilibrium

    • B. 

      Physiological chance

    • C. 

      Homeostasis

    • D. 

      Static equilibrium

    • E. 

      Estivation

  • 31. 
    The panting responses that are observed in overheated birds and mammals dissipates excess heat by    
    • A. 

      Countercurrent exchange

    • B. 

      Acclimation

    • C. 

      Vasoconstriction

    • D. 

      Hibernation

    • E. 

      Evaporation

  • 32. 
    Among these choices, the least reliable indicator of a terrestrial animal's metabolic rate is the amount of    
    • A. 

      Food eaten in one day

    • B. 

      Heat generated in one day

    • C. 

      Oxygen used in mitochondria in one day

    • D. 

      Carbon dioxide produced in one day

    • E. 

      Water consumed in one day

  • 33. 
    Examine the figure above. Near a goose's abdomen, the countercurrent arrangement of the arterial and venous blood vessels causes    
    • A. 

      He temperature difference between the contents of the two sets of vessels to be minimized

    • B. 

      The venous blood to be as cold near the abdomen as it is near the feet

    • C. 

      The blood in the feet to be as warm as the blood in the abdomen

    • D. 

      The temperature at the abdomen to be less than the temperature at the feet

    • E. 

      The loss of the maximum possible amount of heat to the environment

  • 34. 
    Which of the following animals uses the largest percentage of its energy budget for homeostatic regulation?    
    • A. 

      A hydra

    • B. 

      A marine jelly (an invertebrate)

    • C. 

      A snake in a temperate forest

    • D. 

      A desert bird

    • E. 

      A desert insect

  • 35. 
    What do all craniates have that earlier chordates did not have?    
    • A. 

      Brain

    • B. 

      Vertebrae

    • C. 

      Cartilaginous pipe surrounding notochord

    • D. 

      Partial or complete skull

    • E. 

      Bone bra

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