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Past Questions

BCH 491 Past Questions and Answers

Title: BCH 491 Past Questions and Answers URL: https://studentsdash.com/bch-491-past-questions-and-answers/ -------------------------------------------------- Biochemical Instrumentation and Techniques BCH 491 Past Questions and Answers

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Past Questions

BIO 101 PAST QUESTIONS AND ANSWERS

Title: BIO 101 PAST QUESTIONS AND ANSWERS URL: https://studentsdash.com/bio-101-past-questions-and-answers/ -------------------------------------------------- Hey, as you may know the Ebonyi State University(Ebsu) year one exam is CBT BASED which means it will be written with computer, and today we will be drop only 11 Past Questions here to practice more use our STUDENTSDASH Practice code to Practice more on STUDENTSDASH APP . BIO 101 PAST QUESTIONS 1.calyx and ____are the non essential part of flower Answer Agaricussp. Another name for spermatophytes is________ Answer Seed plants The site of gene location __ Answer: Locus __ is the unit of heredity Answer Gene Sweating helps in temperature regulation by Answer: cooling the body 6. _ is a group lower green plant with vascular bundles Answer: Pteridophytes Morphological variation is also known as variation __ Answer: continuous The major photosynthesis pigment found in all algae is _ Answer:chlorophyll a The female part of flower is_____ Answer: Gynoecium _ is the boiling point of adenine Answer: 591.4oC Which of the following is not a characteristic of living things Answer: crystallisation The organelles responsible for energy production Answer: Mitochondrial 13 the chemical formula for cytosine Answer: C4H5N30 Which of the following is unicellular green algae Answer :chlamydomonas Red algae store food mainly in the form of _ Answer:Floridean starch The ability of an organism to maintain constant internal environment is called __ Answer:Homeostasis The following are the methods of plant breeding except _ Answer : cutting method The mature sex cell that can take part in sexual reproduction is __ Answer: Gamete The following are asexual reproduction except Answer: conjugation The location of a chromosome in the cell____ Answer: Nucleus MORE 1: Water exist the body of Sponges through Ostium Chonanocytes Osculum Pinacoderm ANS – Osculum 2: Platyhelminthes possess the following except Triplobastic body Exoskeleton Digestive system Mouth ANS – Exoskeleton 3- Nematodes are parasites of both plants and animals Yes No ANS – YES 4- Types of viruses based on shapes are (1) Helical (2) Polyhadel (3) Enveloped (4) Complex (1,2,3,4) (1,2,3 only) (1,2,4) 1,3 and 4 only) ANS – 1,3 and 4 only) 5- Viruses can be controlled using the following except Vaccines Antibodies Interferons Prophages ANS – Prophages 6- The major types of body structure is sponges include the following except Oscunoid Asconoid Syconoid Leuconoid ANS –Oscunoid 7- Examples of Ciliophora are the following except Opalina Paramecium Balantidum Euglena ANS – Euglena 8- The division of plants that is made up of mostly primitive plants is Bryophytes Thallophytes Pteridophytes Spermatophytes Schizophytes ANS – Pteridophytess 9- Schyzophyte is a kind of bacteria that resembles every other plants in the plant kingdom by possessing Chitinous cell wall Membranous cell wall Cellulose cell wall Chloroplasts None of the above ANS – Cellulose cell wall 10- The mode of nutrition in which organisms absorb nutrients in a soluble form is called Autotrophic Mixotrophic Osmotrophic Holozoic Saprophytic ANS – Osmotrophic 11- Which of the division of plants are used as surgical dressing? Thallophytes Bryophytes Pteridophytes Spermatophytes Angiospgrm ANS – Bryophytes 12- Streptomycin is obtained from Streptomyces rimosus Streptomyces griseus Aureomycin Streptomyces aureofaciens ANS – Streptomyces griseus 13- Cryptogams reproduce by Spores Seeds Root Fruit ANS – Spores 14 ——-type of photosynthesis is found in photoautotrophic bacteria Anoxygenic photosynthesis Toxygenic photosynthesis Autotrophic photosynthesis Heterotrophic ANS – Anoxygenic photosynthesis 15- The function of plasmodesmata is? Protection of the plasma membrane selectively permeable Allow communication between cells Osmoreguintion Photosynthesis ANS – Allow communication between cells 16- In plants, co-ordination is achieved by? Nervous system and endocrine system Nervous system and plant hormones Endocrine system and phytohormones Plant hormone and Phytohormones ANS – Plant hormone and Phytohormones 17 – In plants, assimilation include processes such as Photosynthesis Nitrogen fixation Absorption of nutrients from the soil All of the above None of the above ANS – All of the above 18 __ organelle is associated with secretory activity of the cell Ribosome Mitochondria Endoplasmic Reticulum Golgi apparatus Plastids ANS – Golgi apparatus 19- Leucoplasts are predominant in———–? Brightly coloured flowers Brightly coloured leaves Storage organs Reproductive organs Petals ANS – Storage organs 20- The functions of microtubules and microfilaments are Absorption and circulation of nutrients Structural support, flexibility, and shape of the cell Protection and selective permeability Regulation of metabolic activities Storage and excretion of waste products 21- is the simplest, smallest, and most successful micro-organism Bacterium Virus Fungus Protozoa 22 ———–is a practical means of accelerating success in plant breeding and improving economically important crops Hybridization Induced mutation Tissues culture Artificial selection ANS – Tissues culture 23- Example of traits being influenced by no trace of environment is Sun tanned skin Behaviour Blood group Height ANS – Blood group 24- Species of the phyla below serve as food for other animals except Mollusca Arthropoda Echinodermata Platyhelminthes Cnideria 25- Molluscs have a muscular foot called Muscular tube Mantle Muscular mast Mass Mast foot 26- Echinoderms possess a Shiny face Spiky surface Smooth surface Spiny surface Shiny surface ANS – Spiny surface 27- The following are parasites of humans and animals except Taenia Trichuris Dugesio Fasciola Schistosoma 28- The photoautotrophic bacteria possess photosynthetic pigments in Nucleus Thylakoid Chlorophyll Lysosome ANS – Thylakoid 29- The fungi which produce their spores in a small cup-shaped sac belong to the phylum Glomeromycota Zygomycota Basidiomycota Ascomvcota ANS – Ascomvcota 30 ——– is the type of sexual reproduction which both gametes are motile but the male gamete is more active and smaller isogamy Anisogamy Oogamy Heterogamy ANS – Anisogamy 31- A group of algae found on stones and rocky surfaces are called Mesophytes Matophytes Xerophytes Lithophytes ANS – Xerophytes 32- The use of a single cell to produce a full organism in a cell culture is called Totipotanty Somatogamy Hybridization ANS – Somatogamy 33- Land snail belongs to which class Gastropoda Petecypoda Scaphopoda Polyplacophora ANS – Gastropoda 34- Tube feet is a characteristic feature of Nematode Echinoderms Arthropods mollusc ANS – Echinoderms 35- Binomial nomenclature as a system of assigning two names to an organism originated from which of these scientists Carolus Linnaeus Charles Darwin Jean Baptiste Lamarck Alfred Wallace ANS – Carolus Linnaeus VIEW MORE

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