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QuizMoz offers one of the Internet's largest collection of quizzes for you to tease your brain and pit your wits against the experienced QuizMoz quiz masters. Go ahead and find out what you know about yourself and the world around you. Best of luck!!  GED Practice Test - Science - Botany Facts  Average Score for this quiz: 38%  No of times this quiz has been taken: 80  No of people passing this quiz: 37  No of people failing this quiz: 43  Maximum score for this quiz: 95% Coverage : The GEd Practice Test - Science - Botany has been designed to test the concepts of the test taker in one of the main branches of science, namely Botany. This test covers the various topics under plant science, like biology of cells, diversity of life, population biology etc.  GED Practice Test - Science - Botany Discussion Forum 1.  Auxins are plant hormones which promote stem growth, fruit growth and tropisms in plants. Which one of the following is the most common auxin? a. Ethylene b. Cytokinin c. Indole acetic acid d. Gibberlins Please provide appropriate updations Ques Auxins are plant hormones which promote stem growth, fruit growth and tropisms in plants. Which one of the following is the most common auxin? a. b. c. d. Please describe the changes made by you   This Question is based on the following passage:   Mitochondria are membrane-bound organelles, and like the nucleus have a double membrane. The outer membrane is fairly smooth. But the inner membrane is highly convoluted, forming folds called cristae. The cristae greatly increase the inner membrane's surface area. It is on these cristae that food (sugar) is combined with oxygen to produce ATP - the primary energy source for the cell. Mitochondria's main role is the production of ATP (adenosine tri-phosphate) which is the principal energy storage molecule of the cell (it is also a component for the synthesis of nucleic acids (RNA and DNA) and it can act as a neurotransmitter) ATP is produced in the electron transport chain which uses products of the Krebs cycle which is itself linked to the metabolism of sugars, fats and amino acids. Mitochondria contain their own DNA which codes for some but not all the proteins found in mitochondria. It is believed that originally mitochondria were independent organisms that early on in evolutionary history have entered a symbiotic relationship with unicellular organisms. Mitochondria are inherited only through the mother line (the sperm does not contribute mitochondria to the egg) 2.  What is the main role of  mitochondria? a. Synthesis of nucleic acid b. Acts as a neurotransmitter c. Production of  ATP d. None of the above Please provide appropriate updations Ques What is the main role ofmitochondria? a. b. c. d. Please describe the changes made by you   This Question is based on the following passage:   Ecosystems vary in size. They can be as small as a puddle or as large as the Earth itself. Any group of living and nonliving things interacting with each other can be considered as an ecosystem. In an ecosystem, the food relation in its simplest form, representing a producer, primary consumer, a secondary consumer and decomposer, is called a food chain. Within each ecosystem, there are habitats which may also vary in size. A habitat is the place where a population lives. A population is a group of living organisms of the same kind living in the same place at the same time. All of the populations interact and form a community. The community of living things interacts with the non-living world around it to form the ecosystem. The habitat must supply the needs of organisms, such as food, water, temperature, oxygen, and minerals. If the population's needs are not met, it will move to a better habitat. Two different populations can not occupy the same niche at the same time, however. So the processes of competition, predation, cooperation, and symbiosis occur. 3.  What is each step in a food chain called? a. Trophic Stage b. Trophic Grade c. Trophic level d. Stair Please provide appropriate updations Ques What is each step in a food chain called? a. b. c. d. Please describe the changes made by you   This Question is based on the following passage:   Ecosystems vary in size. They can be as small as a puddle or as large as the Earth itself. Any group of living and nonliving things interacting with each other can be considered as an ecosystem. In an ecosystem, the food relation in its simplest form, representing a producer, primary consumer, a secondary consumer and decomposer, is called a food chain. Within each ecosystem, there are habitats which may also vary in size. A habitat is the place where a population lives. A population is a group of living organisms of the same kind living in the same place at the same time. All of the populations interact and form a community. The community of living things interacts with the non-living world around it to form the ecosystem. The habitat must supply the needs of organisms, such as food, water, temperature, oxygen, and minerals. If the population's needs are not met, it will move to a better habitat. Two different populations can not occupy the same niche at the same time, however. So the processes of competition, predation, cooperation, and symbiosis occur. 4.  What are the main components of an ecosystem? a. Water and temperature b. Oxygen and minerals c. Water and minerals d. Living and non living Please provide appropriate updations Ques What are the main components of an ecosystem? a. b. c. d. Please describe the changes made by you   This Question is based on the following passage:   Ecosystems vary in size. They can be as small as a puddle or as large as the Earth itself. Any group of living and nonliving things interacting with each other can be considered as an ecosystem. In an ecosystem, the food relation in its simplest form, representing a producer, primary consumer, a secondary consumer and decomposer, is called a food chain. Within each ecosystem, there are habitats which may also vary in size. A habitat is the place where a population lives. A population is a group of living organisms of the same kind living in the same place at the same time. All of the populations interact and form a community. The community of living things interacts with the non-living world around it to form the ecosystem. The habitat must supply the needs of organisms, such as food, water, temperature, oxygen, and minerals. If the population's needs are not met, it will move to a better habitat. Two different populations can not occupy the same niche at the same time, however. So the processes of competition, predation, cooperation, and symbiosis occur. 5.  Two different populations can not occupy the same niche at the same time. What processes occur when two populations occupy the same niche? a. Competition b. Predation c. Co-operation d. Symbiosis Please provide appropriate updations Ques Two different populations can not occupy the same niche at the same time. What processes occur when two populations occupy the same niche? a. b. c. d. Please describe the changes made by you   This Question is based on the following passage:   Ecosystems vary in size. They can be as small as a puddle or as large as the Earth itself. Any group of living and nonliving things interacting with each other can be considered as an ecosystem. In an ecosystem, the food relation in its simplest form, representing a producer, primary consumer, a secondary consumer and decomposer, is called a food chain. Within each ecosystem, there are habitats which may also vary in size. A habitat is the place where a population lives. A population is a group of living organisms of the same kind living in the same place at the same time. All of the populations interact and form a community. The community of living things interacts with the non-living world around it to form the ecosystem. The habitat must supply the needs of organisms, such as food, water, temperature, oxygen, and minerals. If the population's needs are not met, it will move to a better habitat. Two different populations can not occupy the same niche at the same time, however. So the processes of competition, predation, cooperation, and symbiosis occur. 6.  Who are the main producers in an ecosystem? a. Green Plants b. Animals c. Scavengers d. Fungi and Bacteria Please provide appropriate updations Ques Who are the main producers in an ecosystem? a. b. c. d. Please describe the changes made by you   This Question is based on the following passage:   Hormones in animals coordinate body functions by being produced in one place and acting in another. This would be true for animal hormones but plant hormones are often produced in the structure or tissue in which they act. Plants do not have a circulatory system and "action at a distance" may not be a feature of plant hormones. Plant hormones seem to coordinate growth and development in different parts of the plant, and help the plant respond to environmental signals. They are molecules that are not directly involved in metabolic or developmental processes but they act at low concentrations to modify those processes. There are five generally recognized classes of plant hormone. They are auxins, cytokinins, ethylene, abscisic acid and gibberlins. Some of the classes are represented by only one compound, others by several different compounds. They are all organic compounds, they may resemble molecules which turn up elsewhere in plant structure or function, but they are not directly involved as nutrients or metabolites. 7.  Plants do not have which of the following? a. Hormones b. Auxins c. Circulatory system d. Nutrients Please provide appropriate updations Ques Plants do not have which of the following? a. b. c. d. Please describe the changes made by you This question is based upon the figure shown below 8.  Functions of cell wall marked as 5 is: a. Protection and reproduction b. Mechanical support c. Protection and mechanical support d. Maintenance of balance of intracellular osmotic pressure Please provide appropriate updations Ques Functions of cell wall marked as 5 is: a. b. c. d. Please describe the changes made by you   This Question is based on the following passage:   The three major functions that are basic to plant growth and development are: Photosynthesis – the process of capturing light energy and converting it to sugar energy, in the presence of chlorophyll using CO2 and H2O,Respiration – the process of metabolizing (burning) sugars to yield energy for growth, reproduction and other life processes, and Transpiration – the loss of water vapor through the stomata of leaves. Photosynthesis and respiration are complementary processes in the living world. Photosynthesis uses the energy of sunlight to produce sugars and other organic molecules. These molecules in turn serve as food for other organisms. Many of these organisms carry out respiration, a process that uses O2 to form CO2 from the same carbon atoms that had been taken up as CO2 and converted into sugars by photosynthesis. In the process, the organisms that respire obtain the chemical bond energy that they need to survive. 9.  Where does the energy needed for respiration come from? a. Photosynthesis b. Sunlight c. Absorbed nutrients d. From chemical bond energy Please provide appropriate updations Ques Where does the energy needed for respiration come from? a. b. c. d. Please describe the changes made by you 10.  Where does the Krebs cycle take place? a. Centriole b. Vacuoles c. Nucleus d. Mitochondria Please provide appropriate updations Ques Where does the Krebs cycle take place? a. b. c. d. Please describe the changes made by you 11.  What precedes the Krebs cycle in a mitochondria? a. Autolysis b. Glycolysis c. Pinocytosis d. Protein synthesis Please provide appropriate updations Ques What precedes the Krebs cycle in a mitochondria? a. b. c. d. Please describe the changes made by you 12.  What is the end product of Krebs cycle? a. 6-carbon glucose breaks into two 3-carbon pyruvic acid units b. 2-carbon acetyl CoA joins with a 4-carbon compound to form a 6- carbon compound c. Net gain of 2 ATP d. Hydrogens join with NAD to form NADH2 Please provide appropriate updations Ques What is the end product of Krebs cycle? a. b. c. d. Please describe the changes made by you   This Question is based on the following passage:    Proteins make up about 15% of the mass of the average person. Protein molecules are essential to us in variety of different ways. Much of the fabric of our body is constructed from protein molecules. Muscle, cartilage, ligaments, skin and hair - these are all mainly protein materials. The protein in the food we eat is our main source of the chemical building blocks we need to build our own protein molecules. The primary structure of a segment of a polypeptide chain or of a protein is the amino-acid sequence of the polypeptide chain(s), without regard to spatial arrangement (apart from configuration at the alpha-carbon atom). The sequence and properties of side chains determine all that is unique about a particular protein, including its biological function and its specific three-dimensional structure. 13.  Protein keratin is found in which part of the body? a. Muscle b. Cartilage c. Skin d. Hair Please provide appropriate updations Ques Protein keratin is found in which part of the body? a. b. c. d. Please describe the changes made by you   This Question is based on the following passage:    Proteins make up about 15% of the mass of the average person. Protein molecules are essential to us in variety of different ways. Much of the fabric of our body is constructed from protein molecules. Muscle, cartilage, ligaments, skin and hair - these are all mainly protein materials. The protein in the food we eat is our main source of the chemical building blocks we need to build our own protein molecules. The primary structure of a segment of a polypeptide chain or of a protein is the amino-acid sequence of the polypeptide chain(s), without regard to spatial arrangement (apart from configuration at the alpha-carbon atom). The sequence and properties of side chains determine all that is unique about a particular protein, including its biological function and its specific three-dimensional structure. 14.  What determines the uniqueness of a protein? a. Specific three-dimensional structure b. Sequence of the polypeptide chain c. Sequence and properties of side chains d. Primary structure Please provide appropriate updations Ques What determines the uniqueness of a protein? a. b. c. d. Please describe the changes made by you This question is based upon the figure shown below   This Question is based on the following passage:    Proteins make up about 15% of the mass of the average person. Protein molecules are essential to us in variety of different ways. Much of the fabric of our body is constructed from protein molecules. Muscle, cartilage, ligaments, skin and hair - these are all mainly protein materials. The protein in the food we eat is our main source of the chemical building blocks we need to build our own protein molecules. The primary structure of a segment of a polypeptide chain or of a protein is the amino-acid sequence of the polypeptide chain(s), without regard to spatial arrangement (apart from configuration at the alpha-carbon atom). The sequence and properties of side chains determine all that is unique about a particular protein, including its biological function and its specific three-dimensional structure. 15.  What does "nm" stand for in the above diagram? a. Nano meter b. Nino meter c. Nina meter d. Ninza meter Please provide appropriate updations Ques What does "nm" stand for in the above diagram? a. b. c. d. Please describe the changes made by you   This Question is based on the following passage:    Proteins make up about 15% of the mass of the average person. Protein molecules are essential to us in variety of different ways. Much of the fabric of our body is constructed from protein molecules. Muscle, cartilage, ligaments, skin and hair - these are all mainly protein materials. The protein in the food we eat is our main source of the chemical building blocks we need to build our own protein molecules. The primary structure of a segment of a polypeptide chain or of a protein is the amino-acid sequence of the polypeptide chain(s), without regard to spatial arrangement (apart from configuration at the alpha-carbon atom). The sequence and properties of side chains determine all that is unique about a particular protein, including its biological function and its specific three-dimensional structure. 16.  Gametes are generated as a result of which kind of cell division? a. Meiosis b. Mitosis c. Photosynthesis d. Phosphorylation Please provide appropriate updations Ques Gametes are generated as a result of which kind of cell division? a. b. c. d. Please describe the changes made by you   This Question is based on the following passage:    Proteins make up about 15% of the mass of the average person. Protein molecules are essential to us in variety of different ways. Much of the fabric of our body is constructed from protein molecules. Muscle, cartilage, ligaments, skin and hair - these are all mainly protein materials. The protein in the food we eat is our main source of the chemical building blocks we need to build our own protein molecules. The primary structure of a segment of a polypeptide chain or of a protein is the amino-acid sequence of the polypeptide chain(s), without regard to spatial arrangement (apart from configuration at the alpha-carbon atom). The sequence and properties of side chains determine all that is unique about a particular protein, including its biological function and its specific three-dimensional structure. 17.  Cell which have two sets of chromosomes are called______. a. Haploid b. Diploid c. Monocot d. Dicot Please provide appropriate updations Ques Cell which have two sets of chromosomes are called______. a. b. c. d. Please describe the changes made by you   This Question is based on the following passage:    Proteins make up about 15% of the mass of the average person. Protein molecules are essential to us in variety of different ways. Much of the fabric of our body is constructed from protein molecules. Muscle, cartilage, ligaments, skin and hair - these are all mainly protein materials. The protein in the food we eat is our main source of the chemical building blocks we need to build our own protein molecules. The primary structure of a segment of a polypeptide chain or of a protein is the amino-acid sequence of the polypeptide chain(s), without regard to spatial arrangement (apart from configuration at the alpha-carbon atom). The sequence and properties of side chains determine all that is unique about a particular protein, including its biological function and its specific three-dimensional structure. 18.  Bread moulds, yeasts, mushrooms and morels, puffballs and ergot belongs to:   a. Fungi b. Animalia c. Protista d. Plantae Please provide appropriate updations Ques Bread moulds, yeasts, mushrooms and morels, puffballs and ergot belongs to: a. b. c. d. Please describe the changes made by you   This Question is based on the following passage:    Proteins make up about 15% of the mass of the average person. Protein molecules are essential to us in variety of different ways. Much of the fabric of our body is constructed from protein molecules. Muscle, cartilage, ligaments, skin and hair - these are all mainly protein materials. The protein in the food we eat is our main source of the chemical building blocks we need to build our own protein molecules. The primary structure of a segment of a polypeptide chain or of a protein is the amino-acid sequence of the polypeptide chain(s), without regard to spatial arrangement (apart from configuration at the alpha-carbon atom). The sequence and properties of side chains determine all that is unique about a particular protein, including its biological function and its specific three-dimensional structure. 19.  Which of the following is wrongly matched? a. Bat- Mammalia b. Amoeba- Protozoa c. Lizard- Arthropoda d. Crocodile - Reptilia Please provide appropriate updations Ques Which of the following is wrongly matched? a. b. c. d. Please describe the changes made by you   This Question is based on the following passage:   Hardy Weinberg equilibrium- Hardy-Weinberg equilibrium describes a state in which genotype frequencies are constant from generation to generation and in which genotype frequencies are a product of allele frequencies. This condition prevails in situations in which there are an absence of mutations, migrations, non-random mating and environmental factors favoring particular genotypes. In a paper published in 1908, G. H. Hardy sought to disprove the Mendelian idea that dominant genetic characteristics would tend to appear in the whole population, while recessive characteristics would tend to disappear. A population is a set of interbreeding individuals all belonging to the same species. In most sexually reproducing species, including humans, each organism contains two copies of virtually every gene—one inherited from each parent. Any particular gene may occur in slightly different forms, called alleles. An organism with two identical alleles is called homozygous for that gene, and one with two different alleles is called heterozygous. During the formation of gametes, the two alleles separate into different gametes. 20.  Whose ideas has G.H Hardy tried to disprove? a. Lamark b. Mendel c. Darwin d. Plato Please provide appropriate updations Ques Whose ideas has G.H Hardy tried to disprove? a. b. c. d. Please describe the changes made by you Think you know more about this quiz!   Please enter your Name and what you would like to tell everyone about GED Practice Test - Science - Botany  Name: Think you know more about GED Practice Test - Science - Botany and would like others to know too? Whether its a great fact, a joke, a personal experience or an interesting anecdote, please share it with all the human beings on planet earth. Your contribution will help keep QuizMoz a free site for all.    (Optional)  (average submission size - 5 to 10 lines) GED Practice Test - Science - Botany Discussion Forum Know the Latest News about GED Practice Test - Science - Botany! What others think about GED Practice Test - Science - Botany By: kirandeep kaur on Jul 20, 2009    the questions r really good By: m.rafique on Jun 24, 2009    test is very nice and this kind of tests increase our knowledge.so do these exercises. By: jen on Jan 25, 2009    good very good very good very good very good very good By: reyad on Nov 13, 2008    very good and tough as well.it was challenging By: reyad on Nov 13, 2008    very good and tough as well.it was challenging By: reyad on Nov 13, 2008    very good and tough as well.it was challenging By: reyad on Nov 13, 2008    very good and tough as well.it was challenging By: reyad on Nov 13, 2008    very good and tough as well.it was challenging By: reyad on Nov 13, 2008    very good and tough as well.it was challenging By: reyad on Nov 13, 2008    very good and tough as well.it was challenging By: reyad on Nov 13, 2008    very good and tough as well.it was challenging By: reyad on Nov 13, 2008    very good and tough as well.it was challenging By: reyad on Nov 13, 2008    very good and tough as well.it was challenging By: reyad on Nov 13, 2008    very good and tough as well.it was challenging By: reyad on Nov 13, 2008    very good and tough as well.it was challenging By: reyad on Nov 13, 2008    very good and tough as well.it was challenging By: reyad on Nov 13, 2008    very good and tough as well.it was challenging By: reyad on Nov 13, 2008    very good and tough as well.it was challenging By: reyad on Nov 13, 2008    very good and tough as well.it was challenging   Hottest Quizzes Free IQ Test   Christmas Quiz   Christmas Quizzes   Kids General Knowledge Quiz   2009 General Knowledge Quiz   2010 General Knowledge Test   Science Quiz for Kids   Medical Terminology Quiz   Career Quiz for Kids   General Knowledge Science Test   Harry Potter Quiz   IQ Tests   Cricket Quiz   Am I Pregnant Quiz   Dating Etiquette Quiz   Email Etiquette Quiz   Home     About Us      Advertise     Terms of Service     Privacy Policy     Contact QuizMoz    FAQ     SiteMap Copyright © 2007.www.quizmoz.com. 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