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How can aquatic arthropods have larger bodies than their terrestrial counterparts?
A. |
Terrestrial arthropods lack a circulatory system. |
|
B. |
The circulatory system of aquatic arthropods is more efficient. |
|
C. |
Gas exchange across the body surface occurs more readily in aquatic environments. |
|
D. |
Buoyancy of the water can support heavier exoskeletons. |
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- In which part of the mammalian respiratory system does gas exchange occur? A. bronchioles B. diaphragm C. alveoli D. tracheaWorms use a hydrostatic skeleton to generate movement. How do they do this? a. Their bones are filled with water, which provides the weight of the skeleton. b. The change in body structure is caused by contraction of muscles compressing the watery body fluid. c. The muscles contain water vacuoles, which, when filled, provide a rigid internal structure. d. The term hydrostatic simply refers to moist environment. They generate movement just as arthropods do.Which type, or form, of animal could function without a circulatory system? A. a small, thin sedentary aquatic animal B. an active terrestrial animal C. a large, mobile aquatic animal D. a large, slow terrestrial animal E. a large, mobile terrestrial animal
- What is true about Myoglobin? A. is the oxygen-carrying molecule in most invertebrates who do not have respiratory systems. B. primary purpose is to bind to carbon monoxide to prevent us from being poisoned. C. uses copper rather than iron. D. is similar to hemoglobin but has one heme and found mostly in muscle tissue. Which animal has two atria and one ventricle with no septum? A. fish B. frog C. rat D. lizardHow does an aquatic animal offset the decrease in oxygen levels in warmer water? A. by increasing the flow of oxygen over the gills by ventilation B. by using oxygenated blood within capillaries called lamellae C. by breathing air off the top of the water D. by entering a state of torpor to save energy and reduce metabolic rateFlatworms can reach a maximum size of around 40cm. Whilst this is big for a worm, there are certainly larger animals on earth. What might it be that restricts the flatworms body size? A. They have an exoskeleton that restricts their growth. B. They do not have a circulatory system. C. They are exothermic animals that have limited energy for growth. D. They are acoelomates and so the growth of their internal organs is restricted by growth of the outer body wall.
- In flatworms, flame cells are involved in what metabolic process?a. reproduction c. locomotionb. digestion d. osmoregulationMatch the respiratory organs of FROGS to their functions. 1. Nasal Cavity A. The short tubes of a frog’s breathing system that leads from the larynx to the lungs; passageway of air into the lungs. 2. Glottis B. Amplify the advertisement call of the male and attract females. 3. Pharynx C. Where gases are exchanged between the air and the bloodstream. 4. Trachea D. Passageway of air from the external environment. 5. Larynx E. Allows air to enter glottis then into the larynx. 6. Vocal Sacs F. Controls airflow in and out of the respiratory passages. 7. Bronchi G. Connects the pharynx with lungs. 8. Lungs H. Contains vocal cords; used to conduct air to the lungs and as a voice box so the frog can communicate. 9. Alveolar Ducts I. Exchange point where CO2 leaves and O2 enters the blood. 10. Alveoli J. Tiny tubes that connect the respiratory bronchioles to alveolar sacs. K. Divides the left and right lung.What happens to a fish’s movement speed in colder water?A. The fish swims more slowly.B. The fish swims at the same speed by making each muscle contract more strongly.C. The fish swims at the same speed by recruiting more muscle fibers.D. The fish swims faster.
- Look at the picture. What internal structure does this animal use to bring in oxygen and release carbon dioxide? A. brain В. gills C. heart D. lungsYou are confronted with two worms that, on first glance, appear to be very similar. Upon closer examination, however, you note one difference that allows you to identify one specimen as an earthworm and the other as a roundworm. That key characteristic is: A. The presence of a gastrovascular cavity B. The presence of a body cavity C. The presence of a muscle layer around the digestive tract D. The absence of a specialized gas exchange surface E. None of the characteristics listed above would allow an earthworm to be distinguished from a roundwormWhich statement best describes how an earthworm moves? a Contracting setae while relaxing longitudinal and circular muscles b Contracting longitudinal muscles in anterior sections forces fluid across the septum and into segments in the posterior sections c Contracting longitudinal muscles which puts pressure on the hydrostatic skeleton and causes it constrict and elongate d Simultaneous contraction of longitudinal and circular muscles within a segment e Alternating contraction of longitudinal muscle in a posterior segment with contraction of circular muscles in the neighboring anterior segment