Regents Living Environment Test Preparation Practice

    Regents Test, Full Exam Practice Online: living environment June 2016

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30

    Base your answers to questions 31 and 32 on the diagram below and on your knowledge of biology. The diagram represents part of a food web.

    ecology, energy flow and food web fig: lenv62016-examw_g8.png

    31
    32
    33

    Base your answers to questions 34 through 36 on the graph below and on your knowledge of biology. The graph shows the masses of different types of plants found in an area of the Adirondack Mountains after a forest fire occurred.

    ecology, succession, change of ecosystems over time fig: lenv62016-examw_g9.png

    34
    35
    36

    Base your answers to questions 37 and 38 on the diagram below and on your knowledge of biology. The dia- gram represents a portion of a starch molecule.

    organization and patterns in Life, organic and inorganic compounds, genetics and biotechnology, protein synthesis, structure and functions fig: lenv62016-examw_g11.png

    37
    38

    Base your answer to question 39 on the information below and on your knowledge of biology.

    human influences on the environment, human efforts on reverse of the damage to ecosystems fig: lenv62016-examw_g10.png

    A genetically modified pig, nicknamed the “enviropig,” has the ability to produce a bacterial enzyme in its saliva that helps reduce the amount of phosphorus in its wastes. Phosphorus pollution is a serious environmental concern. Enviropigs are expensive, but the cost is balanced against the benefit to the environment. There is also a concern that the US Department of Agriculture still has not cleared enviropig meat for human consumption.

    39

    Base your answers to questions 40 and 41 on the information below and on your knowledge of biology.

    Researchers have produced rice plants that can withstand being completely submerged for up to two weeks. This is good news for farmers in the flood regions of Southeast Asia. The farmers in this region rely heavily on this crop. The diagram below illustrates the process used to genetically modify plants, such as rice.

    genetics and biotechnology, technology of genetic engineering fig: lenv62016-examw_g12.png

    40
    41
    42
    43

    Base your answers to questions 44 through 47 on the information and data table below and on your knowledge of biology.

    For most animals, the sex of the offspring is determined by sex chromosomes. In some species of reptiles, such as the painted turtle, there are no sex chromosomes. It has been discovered that the sex of the offspring is determined by the temperature of the nest in which the egg develops.

    scientific inquiry, data organization, plot and interpretation fig: lenv62016-examw_g16.png

    Directions: Using the information in the data table, construct a line graph on the grid below, following the directions below.

    44
    45
    46
    47

    Base your answers to questions 48 through 50 on the information and graphs below and on your knowledge of biology. The graphs represent the results of two investigations using leaf disks from spinach plants.

    Small disks were cut from spinach leaves that had been treated to remove any air from inside the leaf. The disks were placed in a solution that allowed them to carry out photosynthesis. At first, all the disks sank to the bottom of the container. These disks were then used for two different investigations.

    Investigation 1

    The disks were divided into five groups. Each group was exposed to light of a different intensity, measured in watts per meter squared (W/m2). Some of the disks began to float. The results of the first investigation are shown in the graph below.

    scientific inquiry, data organization, plot and interpretation, scientific inquiry, data organization, plot and interpretation fig: lenv62016-examw_g20.png

    48
    49
    50

    Base your answer to question 51 on the information and photograph below and on your knowledge of biology. The photograph shows an oriental hornet.

    Oriental hornets are unique insects. A yellow pigment in the body of the insect converts solar energy to electrical energy. Plants also convert energy from the Sun.

    organization and patterns in Life, cell energetics, origin of energy and photosynthesis fig: lenv62016-examw_g21.png

    51

    Base your answer to question 52 on the information below and on your knowledge of biology.

    The SUNY Solar Car Model Racing Team’s Sunhawk: Car of the Future?

    The Sunhawk, a car built by students at SUNY New Paltz, prompted Forbes Magazine to ask “Is The $250,000 Sunhawk the Solar Car of the Future?” These cars show the most advanced solar technology and vehicle construction.

    52

    Base your answer to question 53 on the information below and on your knowledge of biology.

    Ten years ago, scientists discovered a well-preserved set of dinosaur remains in China. This dinosaur, which walked on Earth about 125 million years ago, had feathers and was about the same size as a turkey — but don’t be fooled. This dino’s bite was a lot worse than a turkey’s gobble. After a close (and careful!) examination of the dino’s teeth, scientists recently concluded that this dinosaur was probably poisonous. The study was led by David Burnham, who works and teaches at the University of Kansas in Lawrence.

    Source: www.sciencenewsforkids.org

    53

    Base your answers to questions 54 and 55 on the photograph and information below and on your knowledge of biology.

    evolution, naturel selection fig: lenv62016-examw_g23.png

    A Great Larvae Meal

    New Caledonian crows consume a wide range of foods. These crows require tools to extract the larvae of wood boring beetles from their burrows. A bird pokes a larva with a stick until the larva is disturbed enough to bite the stick and hang on to it. The bird is then able to pull the larva out of its burrow. These larvae, with their unusual diet, have a distinct chemical that can be found in the feathers and blood of crows—allowing scientists to determine the percentage of the crows’ diet that is made up of beetle larvae. Scientists found that the beetle larvae are so energy-rich that just a few could satisfy the daily energy requirement for a crow. The crows with the greatest skill in using a twig as a tool benefit most in terms of nutrition.

    54
    55

    Base your answer to question 56-57 on the information below and on your knowledge of biology.

    African violet plants are grown for their delicate, colorful flowers and furry, soft leaves. People often want to touch the leaves and brush the hairy leaves with their fingers. Growers and plant owners were concerned that this could negatively affect the plant. Of particular concern was the presence of body lotion or other skin products on the hands of persons touching the leaves.

    A student thought this might be the basis of a science project. He selected two African violet plants. Ten leaves on each of the two plants were brushed with a gloved hand for 30 seconds, once a day, for a period of five days. The difference was that leaves of the second plant were brushed with a gloved hand that had hand lotion applied to the glove.

    56-57

    Base your answers to questions 58 and 59 on the information and chart below and on your knowledge of biology.

    Scientists studied the distribution of a species of pocket mouse that lived in the sandy desert regions of the southwestern United States. They are eaten by a variety of predators. Pocket mice are active at night, and feed on seeds and grasses. A single female mouse can reproduce several times each year, producing a litter of 3 to 13 offspring each time. Each new litter is considered a generation.

    A volcanic eruption that resulted in lava flows changed the color of the area that the mice inhabit from light brown to black. Data from the scientist’s research of the population are shown in the chart below.

    evolution, altered genes and new inheritable characteristics, evolution, altered genes and new inheritable characteristics fig: lenv62016-examw_g24.png

    58
    59

    Base your answers to questions 60 and 61 on the information below and on your knowledge of biology.

    In 2003, as a result of the Human Genome Project, the complete sequence of all the bases in human DNA was released to the public. Although knowing the entire sequence of bases has proven valuable, scientists are currently working to map genes. Mapping genes involves determining the exact location of each gene. Since much of human DNA does not code for a protein, it is challenging to figure out which segments are actual genes. Often, scientists look at the percent composition of bases in a segment of DNA. If the segment of DNA has a large percentage of C and G bases (together over 50%), it is likely that it is a gene and codes for a protein.

    60
    61

    Base your answers to questions 62 through 64 on the illustration and information below and on your knowledge of biology. The illustration is of a Tasmanian devil.

    homeostasis and immunity, immune response, homeostasis and immunity, immune response fig: lenv62016-examw_g25.png

    The Tasmanian devil is the largest surviving carnivorous marsupial in Australia. It is in danger of extinction due to an unusual type of cancer called Devil Facial Tumor Disease (DFTD). It can be passed from one individual to another through wounds that occur when they fight over food. Tumor cells in the mouth of an infected animal break off and enter the wound on an uninfected animal. The tumor cells multiply in the body of the newly infected devil, forming new tumors that eventually kill the animal.

    Recent research has shown that the immune system of a Tasmanian devil accepts tumor cells from another devil as if they were cells from its own body. The tumor cells are ignored by the immune system. No immune response develops against them, and the cancerous cells multiply. Scientists predict that DFTD could wipe out all the remaining Tasmanian devils in 25 years, unless a treatment is developed.

    62
    63
    64

    Base your answers to questions 65 through 67 on the information below and on your knowledge of biology. The photograph below shows a Canada lynx, a mammal native to North America.

    ecology, relationships among organisms fig: lenv62016-examw_g26.png

    Lynx are found in areas where there is deep, soft snow cover during the winter months. The body design of the Canada lynx helps keep the animal on top of the soft snow. Several unique characteristics, such as the design of its feet and its weight, enable the cat to successfully chase and catch snowshoe hares, its primary source of food. Snowshoe hares are also able to remain on top of the snow.

    Increased winter recreation has created packed snow trails in lynx habitat. This allows coyotes and cougars to compete with lynx.

    65
    66
    67

    Base your answers to questions 68 and 69 on the information below and on your knowledge of biology.

    Cowherds Discovering Ticks Are for the Birds

    South African cowherds [cowboys] are discovering that when it comes to debugging their cattle, nature knows best. Generations of cattle owners who dipped their livestock in pesticides ended up killing not only the ticks that feast on them, but also the red-billed oxpeckers [birds] that eat the ticks. Now environmentalists want to cut out the pesticides, hand the job back to the birds and in the process save them from extinction.…

    The bird is famous for its bright red bill, yellow ringed eyes and voracious appetite for ticks. An oxpecker can eat 13,000 of them [ticks] in a day, and meals are everywhere— on antelope, horses, cattle, buffalo, rhino, lion, elephant and leopard. The ticks carry a host of illnesses, including red-water disease, a common killer of cattle, but [ticks] are harmless to oxpeckers.…

    Source: Eric Naki, Associated Press writer

    68
    69

    Base your answers to questions 70 through 72 on the information below and on your knowledge of biology.

    Over the past few decades, researchers have observed declining numbers in two species of penguins native to the West Antarctic peninsula. New evidence is pointing to a decline in their food supply as the primary cause for the recent drops in their numbers. These penguins feed on krill, small animals that grow and develop under ice masses. The graphs below show data related to two factors: atmospheric carbon dioxide (CO2) levels and Antarctic ice mass. The diagram of a generalized Antarctic food web illustrates the role of the penguins.

    human influences on the environment, human influences on basic processes of natural ecosystems fig: lenv62016-examw_g28.png

    human influences on the environment, human influences on basic processes of natural ecosystems fig: lenv62016-examw_g27.png

    70
    71
    72

    Base your answers to questions 73 through 75 on the diagram below and on your knowledge of biology. The diagram represents an experimental setup.

    labs, lab, diffusion through a membrane fig: lenv62016-examw_g29.png

    73
    74
    75

    Base your answers to questions 76 and 77 on the information and diagram below and on your knowledge of biology.

    Scientists attempted to determine the evolutionary relationships between three different finch species, A, B, and C. In order to do this, they examined the physical characteristics and DNA of these species. DNA was extracted from all three species and analyzed using gel electrophoresis. The results are shown in the diagram.

    labs, lab, relationships and biodiversity fig: lenv62016-examw_g31.png

    76
    77

    Base your answers to questions 78 through 80 on the information and diagram below and on your knowledge of biology.

    Two species of finches found on a particular Galapagos island eat the seeds of a certain variety of plant. The relative strength of their beaks is shown in the graph below.

    labs, lab, the beaks of finches fig: lenv62016-examw_g32.png

    78
    79
    80

    Base your answers to questions 81 and 82 on the information and diagram below and on your knowledge of biology.

    Using a microscope and a wet-mount slide, a student observed a pond water sample containing paramecia, which are single-celled freshwater organisms. He noticed that there was a structure within each living paramecium that contracted regularly—about four times each minute. He researched the organism in his science textbook and found that the structure was a contractile vacuole and its function was to remove excess water from the paramecium.

    In the diagram below, a paramecium is represented as seen through a microscope. The function of the contractile vacuole is described.

    labs, lab, the beaks of finches fig: lenv62016-examw_g33.png

    He decided to determine if the concentration of salt in the environment of the paramecium would affect the rate at which the contractile vacuole would contract.

    81
    82

    Base your answers to questions 83 through 85 on the information below and on your knowledge of biology.

    Five individuals had their pulses taken in beats per minute (bpm) before and after exer- cise. The data are shown in the chart below.

    labs, lab, making connections fig: lenv62016-examw_g34.png

    83
    84
    85