What living things need to survive Transitional Reasoning Download PDF

Questions

1. 1.

   A biology student investigates the respiratory requirements of aquatic insects by placing equal groups of adult diving beetles into two identical tanks filled with aerated freshwater, live prey, and aquatic plants at 22 °C. In Tank 1, beetles can swim freely to the surface to capture atmospheric air under their wing covers, whereas in Tank 2, a submerged fine mesh prevents beetles from reaching the surface while allowing water and dissolved oxygen to circulate freely. Within two hours, all beetles in Tank 2 become motionless and drown, while those in Tank 1 remain active and thrive. Which conclusion about what living things need to survive is best supported by these observations?

   • A) Organisms can readily adapt their respiratory mechanisms to absorb dissolved oxygen when their usual air supply is blocked.
   • B) Water-dwelling animals primarily require large open spaces rather than specific gaseous environments to remain viable.
   • C) Organisms require essential gases to survive, but they must access them in the specific state their physical structures are adapted to capture.
   • D) Complete submersion in liquid water is universally toxic to insect tissues regardless of atmospheric oxygen availability.
2. 2.

   A biology student investigates the energy requirements of living things by culturing equal colonies of active yeast cells in two identical, aerated flasks maintained at 22 °C with identical supplies of water and mineral nutrients. Flask X receives a steady, continuous replenishment of glucose solution throughout the three-week investigation, while Flask Y receives only a single, initial ration of glucose that is fully metabolized within the first three days. After three weeks, the yeast in Flask X continue to grow and reproduce, whereas all yeast cells in Flask Y have depleted their cellular reserves, ceased metabolic activity, and died. Which conclusion about what living things need to survive is best supported by these observations?

   • A) Living organisms can substitute ambient temperature for dietary calories once initial food reserves are depleted.
   • B) Organisms require an external energy source only during initial development and can subsequently sustain life by recycling waste products.
   • C) Living things require a continuous intake of energy from their environment because energy is constantly expended and cannot be recycled.
   • D) Organisms can survive indefinitely without nutrients as long as oxygen and liquid water remain constantly available.
3. 3.

   A student investigates the atmospheric gas requirements of two different bacterial species by culturing equal samples of Species X and Species Y on identical nutrient agar plates under the same temperature and moisture conditions. Plate Set 1 is exposed to standard atmospheric air containing oxygen, whereas Plate Set 2 is placed in an airtight anaerobic chamber where all oxygen has been chemically eliminated. After 48 hours, Species X displays dense bacterial colonies on Plate Set 1 but shows no growth on Plate Set 2, whereas Species Y thrives on Plate Set 2 but fails to survive on Plate Set 1. Which conclusion about what living things need to survive is best supported by these observations?

   • A) All living organisms require a continuous supply of atmospheric oxygen to sustain cellular metabolism and grow.
   • B) Microorganisms do not depend on specific gas compositions because they can instantly alter their survival needs.
   • C) While living things require suitable environmental conditions, specific gas needs differ, and oxygen is not universally required by all organisms.
   • D) Oxygen is universally harmful to single-celled organisms because it prevents them from absorbing essential nutrients.
4. 4.

   A student investigates the environmental requirements of freshwater pond organisms by placing equal populations of Paramecium into three identical culture vessels maintained at 22 °C, with equal dissolved oxygen and food supplies. Vessel 1 contains natural pond water with low dissolved salts (0.02%), Vessel 2 contains slightly brackish water (0.8% salt), and Vessel 3 contains ocean-strength saltwater (3.5% salt). Within two hours, the paramecia in Vessel 1 remain active and swimming, those in Vessel 2 show sluggish movement and shriveling, and all individuals in Vessel 3 suffer severe cellular shrinkage and perish. Which conclusion about the survival needs of living things is best supported by these observations?

   • A) Unicellular organisms can fulfill all survival needs regardless of water composition as long as sufficient food and oxygen are present.
   • B) Aquatic organisms require progressively higher external salt concentrations to maintain their internal energy production.
   • C) Organisms survive only when their external environment is entirely devoid of dissolved minerals and salts.
   • D) Living things require an aquatic environment with a compatible solute concentration to maintain proper internal water balance and cell structure.
5. 5.

   An environmental biologist tests the survival requirements of freshwater green algae by placing equal samples into three culture flasks that all provide adequate sunlight, dissolved carbon dioxide, water, and mineral nutrients at 20 °C. Flask 1 is maintained at a neutral pH of 7.0, Flask 2 is adjusted to a strongly acidic pH of 2.5, and Flask 3 is adjusted to an intensely alkaline pH of 11.5. After five days, the algae in Flask 1 exhibit healthy cell division and growth, whereas the cells in Flasks 2 and 3 show structural breakdown and fail to survive. Which conclusion about the survival needs of living things is best supported by these results?

   • A) Photosynthetic organisms can synthesize organic compounds only when exposed to extreme acid concentrations that accelerate nutrient intake.
   • B) Living things require chemical buffers in their surroundings to substitute for their fundamental need for dissolved gases and space.
   • C) Autotrophic organisms survive and reproduce most effectively when their environment alternates between highly acidic and alkaline extremes.
   • D) Organisms require an external chemical environment with a suitable pH level to maintain their vital life processes.
6. 6.

   A biology student investigates the nutritional needs of freshwater fish by placing equal groups into two identical, well-aerated aquariums with clean water and constant temperature. The fish in Aquarium 1 are fed daily with flakes containing proteins, carbohydrates, and fats, while the fish in Aquarium 2 are fed an equal mass of flavored, non-digestible cellulose pellets that contain no usable nutrients or calories. Although the fish in Aquarium 2 actively eat the pellets every day and keep their digestive tracts full, they steadily lose body mass, weaken, and fail to survive after four weeks, while the fish in Aquarium 1 thrive. Which conclusion about the survival requirements of living things is best supported by these observations?

   • A) Living things require only physical bulk in their digestive systems to satisfy hunger and prevent starvation.
   • B) Organisms require food that supplies usable chemical energy and nutrients, rather than mere physical fullness of the digestive tract.
   • C) Animals can convert any ingested solid substance into metabolic energy if adequate dissolved oxygen and water are present.
   • D) Heterotrophic organisms obtain their primary life-sustaining energy directly from water and dissolved gases rather than from food.
7. 7.

   A student investigates how different organisms meet their essential survival needs by placing a potted clover plant in Enclosure 1 and a caterpillar in Enclosure 2. Both transparent enclosures are kept in the same warm room under natural sunlight and are supplied with fresh air and water, but neither enclosure receives any external food. Over three weeks, the clover plant thrives and grows new shoots, whereas the caterpillar ceases moving, loses body mass, and perishes. Which conclusion regarding the survival needs of living things is best supported by these observations?

   • A) Animals require significantly higher ambient temperatures and physical space than plants to carry out life processes.
   • B) Sunlight and atmospheric gases provide sufficient energy for any living organism to survive without external nutrients.
   • C) Plants do not require energy to sustain life, whereas animals depend directly on sunlight to fuel cellular functions.
   • D) All living things require food to survive, but animals must consume organic matter because they cannot make their own food from sunlight, air, and water.
8. 8.

   A student investigates the respiratory requirements of aquatic organisms by placing two equal groups of freshwater ghost shrimp into identical tanks maintained at 22 °C, each supplied with the same volume of water and daily food rations. Tank 1 is connected to an aerator that continuously bubbles atmospheric air into the water, whereas Tank 2 contains water that was boiled and cooled in a sealed container to eliminate all dissolved gases before introducing the shrimp. Within two hours, the shrimp in Tank 1 remain active and healthy, whereas the shrimp in Tank 2 become motionless and show clear signs of respiratory distress. Which conclusion about the survival needs of living things is best supported by these observations?

   • A) Aquatic animals obtain necessary respiratory gases by chemically metabolizing liquid water rather than absorbing dissolved gases.
   • B) Living organisms in aquatic habitats only require oxygen when exposed to direct sunlight for energy production.
   • C) Aquatic animals can indefinitely replace their requirement for oxygen gas as long as sufficient food and water are provided.
   • D) Aquatic animals depend on dissolved oxygen gas in their environment because they cannot extract oxygen bound chemically in water molecules.
9. 9.

   A biology student investigates the survival requirements of fungi by placing equal samples of bread mold onto nutrient-rich agar plates supplied with identical moisture and oxygen at 22 °C. Plate 1 is kept under continuous bright light, while Plate 2 is placed in an opaque, light-sealed box. After five days, the mold on both plates displays identical, vigorous growth and spore formation. Which conclusion about the survival needs of living things is best supported by these results?

   • A) All living organisms require sunlight as their direct energy source to sustain vital life processes.
   • B) Fungi synthesize their own food using atmospheric gases rather than absorbing nutrients from the agar.
   • C) Moisture and oxygen are non-essential factors that do not affect the survival of decomposers.
   • D) Sunlight is not a universal survival requirement for all living things because heterotrophs obtain energy from pre-formed nutrients.
10. 10.

    A botanist places two groups of healthy potted spinach plants into dark growth chambers maintained at 20 °C, supplying both groups with identical soil moisture and nutrients. Chamber 1 receives regular atmospheric air containing oxygen, whereas Chamber 2 receives a gas mixture of carbon dioxide and nitrogen with all oxygen removed. After several days, the plants in Chamber 1 remain alive, while the plants in Chamber 2 show severe cell damage and perish. Which conclusion regarding the survival requirements of living things is best supported by these results?

    • A) Like other aerobic organisms, plants require oxygen from their surroundings to carry out respiration and stay alive when photosynthesis cannot occur.
    • B) Plants can survive indefinitely without oxygen because their metabolic processes rely exclusively on carbon dioxide.
    • C) The survival of green plants depends only on soil moisture and mineral nutrients rather than atmospheric gases.
    • D) Plants require elevated nitrogen gas concentrations to trigger the enzymatic release of stored chemical energy.
11. 11.

    An ecologist investigates the survival requirements of desert lizards by placing two identical groups into separate outdoor enclosures exposed to the same natural sunlight, ambient air, food supply, and water dishes. Enclosure 1 contains rocky mounds and burrows that provide shaded shelters, whereas Enclosure 2 has an entirely flat, open sandy surface with no shelters. During peak midday temperatures, the lizards in Enclosure 1 retreat into burrows to avoid overheating and remain healthy, whereas the lizards in Enclosure 2 experience severe heat stress and do not survive. Which conclusion regarding the fundamental needs of living things is best supported by these observations?

    • A) Living organisms can endure extreme physical stress if adequate food and water are provided, making physical shelter non-essential.
    • B) Living organisms require a suitable habitat that provides shelter to protect them from potentially lethal environmental conditions.
    • C) Living organisms rely entirely on internal physiological adaptations rather than external structures in their habitat to cope with environmental extremes.
    • D) Living organisms only require open physical space to move freely, regardless of whether protective features are present.
12. 12.

    A biology student sets up two identical beakers containing freshwater and equal populations of water fleas (Daphnia) under identical conditions of temperature, light, and dissolved oxygen. Both groups receive the same daily food rations, but the water in Beaker 1 is passed through a filtration system that continuously removes dissolved ammonia and other excreted metabolic wastes, while Beaker 2 remains unfiltered. After two weeks, the water fleas in Beaker 1 remain active and healthy, whereas all individuals in Beaker 2 have died due to the accumulation of toxic excretory products. Which statement best explains what this investigation demonstrates about the requirements for survival?

    • A) Living organisms can maintain vital functions indefinitely without food as long as toxic wastes are removed.
    • B) Living things require an environment where metabolic waste products are eliminated or kept at non-lethal levels.
    • C) Aquatic organisms do not require dissolved oxygen when metabolic waste filtration is functioning properly.
    • D) Environmental temperature is the only critical factor determining whether an organism survives toxic waste exposure.
13. 13.

    A botanist grows two groups of tomato seedlings in liquid culture solutions under identical warm temperatures, full sunlight, and fresh airflow. Group 1 receives distilled water containing dissolved mineral salts including nitrogen, phosphorus, and potassium, while Group 2 receives only pure distilled water with no added minerals. Over six weeks, the plants in Group 1 develop sturdy stems and vibrant foliage, whereas the plants in Group 2 show severe leaf yellowing, cease growing, and eventually perish. Which conclusion regarding the survival requirements of plants is best supported by these results?

    • A) Plants can sustain long-term survival relying entirely on sunlight, carbon dioxide, and pure water without taking up any other substances.
    • B) Dissolved minerals serve as the direct fuel source for cellular respiration in place of photosynthesized sugars.
    • C) Atmospheric gases alone provide every chemical element necessary for plants to construct all required cellular materials.
    • D) In addition to light and water, plants require essential mineral nutrients to synthesize vital biomolecules and sustain life.
14. 14.

    A student places two identical, healthy potted bean plants under separate sealed, transparent glass domes maintained at 22 °C and exposed to identical daily light cycles and soil watering. Dome 1 contains ambient atmospheric air, while Dome 2 contains air from which all carbon dioxide has been chemically absorbed and removed. After four weeks, the plant in Dome 1 remains healthy and shows new shoot growth, whereas the plant in Dome 2 has yellowed, stopped growing, and withered. Which statement best explains the primary reason for the death of the plant in Dome 2?

    • A) It could not absorb dissolved minerals through its roots without carbon dioxide in the air.
    • B) It was unable to carry out gas exchange because plant leaves strictly require equal amounts of oxygen and carbon dioxide.
    • C) It lost excessive moisture through its leaves because stomata permanently open in carbon-dioxide-free air.
    • D) It lacked the essential carbon dioxide needed to synthesize food molecules for metabolic energy and growth.
15. 15.

    A student sets up an investigation to study the survival needs of terrestrial land snails by placing two equal groups into separate, well-ventilated terrariums kept at the same moderate temperature and ambient lighting. Both terrariums provide an abundant supply of fresh leafy greens for food and identical physical space, but Terrarium 1 is regularly misted with water to maintain a moist environment, whereas Terrarium 2 is kept entirely dry. After several days, the snails in Terrarium 1 remain active and healthy, while all snails in Terrarium 2 become severely dehydrated and perish. Which conclusion is best supported by these experimental findings?

    • A) Animals can survive indefinitely without liquid water if they are provided with an unlimited supply of solid food.
    • B) Ambient temperature and living space are the sole determining factors that dictate the survival of terrestrial organisms.
    • C) Moisture functions only as an optional comfort factor rather than an essential physiological requirement for life.
    • D) Water is an indispensable requirement for survival that organisms cannot live without, even when food, air, and space are fully supplied.
16. 16.

    A biology student investigates the survival conditions of freshwater microorganisms by placing identical colonies of amoebas into three culture dishes, each supplied with identical amounts of nutrient broth, dissolved oxygen, and space. Dish 1 is incubated in a freezer at -10 °C, Dish 2 is kept at a moderate room temperature of 22 °C, and Dish 3 is placed in a heating chamber at 80 °C. After three days, active and reproducing cells are observed only in Dish 2, whereas all amoebas in Dish 1 and Dish 3 have died. Which conclusion about the requirements for survival is best supported by these results?

    • A) Living organisms require an appropriate temperature range to maintain vital metabolic processes and survive.
    • B) Aquatic organisms can tolerate any thermal extreme as long as adequate food and oxygen are present.
    • C) Microorganisms cease life processes solely when physical living space becomes restricted.
    • D) Lowering the ambient temperature below freezing consistently accelerates cellular growth and reproduction.
17. 17.

    An ecologist introduces equal initial numbers of flour beetles into three ventilated incubators, each supplied with the same amount of nutrient-rich grain mixture and kept under identical conditions of moisture, oxygen, and temperature. Incubator 1 provides a usable base area of 100 square centimeters, Incubator 2 provides 400 square centimeters, and Incubator 3 provides 1,600 square centimeters. Over six months, the beetle population in Incubator 1 crashes due to intense overcrowding and lethal waste accumulation, whereas the population in Incubator 3 establishes a healthy, stable colony. Which fundamental requirement for the survival of living things is best demonstrated by this investigation?

    • A) Living things require an unlimited supply of atmospheric gases regardless of their physical surroundings.
    • B) Living things require an adequate living space that provides sufficient territory and prevents toxic waste accumulation.
    • C) Living things require direct exposure to sunlight to regulate their internal temperature during population growth.
    • D) Living things require continuously fluctuating moisture levels to trigger reproduction and maintain metabolism.
18. 18.

    A student places identical sets of healthy aquatic fern fronds into two clear glass jars filled with the same mineral-rich pond water and dissolved gases at 22 °C. Jar 1 is placed under a balanced day-night light cycle, while Jar 2 is wrapped in opaque foil to block all incoming light. After three weeks, the ferns in Jar 1 are green and multiplying, whereas those in Jar 2 have turned brown, fragmented, and died. Which conclusion about the survival needs of living things is best supported by these observations?

    • A) Photosynthetic organisms require light as an essential energy source to produce the food needed for survival.
    • B) Aquatic plants obtain all of their required energy directly from dissolved minerals rather than from light.
    • C) Living organisms can survive indefinitely without an energy source if moisture and temperature are kept stable.
    • D) Environmental gases alone provide all the organic nutrients necessary to keep living things alive.
19. 19.

    A researcher monitors two sealed glass chambers containing adequate moisture and ambient air to evaluate the survival of earthworms. Chamber X is maintained at 20 °C with moist soil rich in decaying leaf litter, whereas Chamber Y is kept under the identical moisture, air, and temperature conditions but contains only washed mineral sand devoid of organic matter. Over two weeks, the earthworms in Chamber X thrive and remain active, while those in Chamber Y rapidly lose body mass and fail to survive. Which statement best explains what this experiment demonstrates about the fundamental needs of living things?

    • A) Organisms can utilize ambient environmental heat as a substitute for chemical food energy when organic nutrients are absent.
    • B) Non-living physical substrate and shelter are more critical to animal survival than access to chemical nutrients.
    • C) Sufficient moisture and atmospheric gases alone can fulfill all energetic requirements needed to maintain vital body mass.
    • D) Heterotrophic organisms fundamentally require external organic matter to supply the chemical energy and building materials necessary for cellular maintenance and survival.
20. 20.

    A student places equal groups of active garden crickets into four separate enclosures with identical temperatures and space to investigate what organisms require to remain alive. Enclosure 1 provides dry food but lacks water; Enclosure 2 provides water but lacks food; Enclosure 3 supplies food, water, and normal atmospheric air; and Enclosure 4 provides food and water but is sealed with pure nitrogen gas instead of air. After five days, healthy crickets are observed only in Enclosure 3, while crickets in the other three enclosures perish. Based on these observations, which conclusion best describes the conditions necessary for the survival of these organisms?

    • A) Crickets can survive on nutrients alone because water can be obtained solely from atmospheric moisture.
    • B) Air is the only indispensable factor for animal survival since food and water can be bypassed in controlled enclosures.
    • C) Survival requires the simultaneous presence of multiple essential resources, including food, water, and usable atmospheric gases.
    • D) Organisms require water only when food is unavailable, allowing them to tolerate environments without atmospheric oxygen.