Biology Species Count and ECG Analysis Quiz
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Questions and Answers

In the given pedigree chart, what conclusion can be drawn regarding the male parent?

  • Heterozygous
  • Possibly color blind
  • Cannot be determined
  • Homozygous dominant (correct)

    • Based on the pedigree chart, what conclusion can be drawn about the female parent?

  • Homogygous dominant
  • Possibly color blind
  • Heterozygous (correct)
  • Cannot be determined

    • How many sperm and ova are formed from four secondary spermatocytes and three secondary oocytes respectively?

  • 4 spermatozoa, 4 ova (correct)
  • 16 spermatozoa, 12 ova
  • 8 spermatozoa, 3 ova
  • 3 spermatozoa, 8 ova

    • Which of the following are narrowly utilitarian arguments for conserving biodiversity?

    <p>III, V and VII</p> Signup and view all the answers

    According to the pedigree chart, could the parents have a normal daughter for the specific trait?

    <p>No</p> Signup and view all the answers

    What conclusion can be drawn about the trait under study in the pedigree chart?

    <p>Possibly color blindness</p> Signup and view all the answers

    Which of the following options correctly describes the total number of plant and animal species described so far?

    <p>Slightly more than 1.5 million</p> Signup and view all the answers

    In an ECG of a normal human, which component indicates the initiation of total cardiac contraction correctly?

    <p>Peak T-initiation of total cardiac contraction</p> Signup and view all the answers

    What is the standing crop at each trophic level typically measured as?

    <p>Both the mass and number of organisms</p> Signup and view all the answers

    Which of the following statements regarding the total number of described plant and animal species is FALSE?

    <p>5 million</p> Signup and view all the answers

    What does Peak P indicate in an ECG of a normal human?

    <p>Initiation of left atrial contraction only</p> Signup and view all the answers

    'Each trophic level has a certain mass of living material at a particular time called as the standing crop.' Which component is responsible for this statement?

    <p>(D) Both (A) and (R) are correct and (R) is the correct explanation of (A)</p> Signup and view all the answers

    Which statement about the ploidy level of endosperm in angiosperms is generally correct?

    <p>3n</p> Signup and view all the answers

    Which statement regarding the forelimbs of whales, bats, cheetahs, and humans is accurate?

    <p>Forelimbs are products of convergent evolution.</p> Signup and view all the answers

    In the context of biotechnology, which statement is correct?

    <p>More than 2300 restriction enzymes have been isolated.</p> Signup and view all the answers

    What is a correct statement about mycorrhiza?

    <p>They assist plants in mineral uptake.</p> Signup and view all the answers

    Which of the following terms best describes the process where homologous structures develop along different directions due to adaptations to different needs?

    <p>Convergent evolution</p> Signup and view all the answers

    What is the ploidy level of endosperm in angiosperms like?

    <p>Triploid</p> Signup and view all the answers

    What is the correct match between column I and column II?

    <p>(A-iii), (B-iv), (C-i), (D-ii)</p> Signup and view all the answers

    Which statement about restriction endonucleases is true?

    <p>Restriction endonucleases are also called 'molecular scissors' because they cut DNA at specific sites.</p> Signup and view all the answers

    Which extinct animal provides evidence of evolution?

    <p>Archaeopteryx</p> Signup and view all the answers

    What does the Hardy Weinberg equilibrium primarily depend on?

    <p>Gene drift</p> Signup and view all the answers

    Which of the following is not a characteristic of Cyclosporin A?

    <p>Linked to Clostridium</p> Signup and view all the answers

    'Sticky ends' in DNA fragments produced by restriction endonucleases refer to:

    <p>Single-stranded overhangs with complementary sequences</p> Signup and view all the answers

    Which of the following is a correct reason for terminating a pregnancy based on the given text?

    <p>(ii) To prevent the fatality or harmfulness to the mother or to foetus or both due to the continuation of pregnancy</p> Signup and view all the answers

    Which of the following statements about hormones is correct based on the given text?

    <p>Statement 1: Hormones are Non-nutrient chemicals which act as intercellular messengers and are produced in large amounts.</p> Signup and view all the answers

    In the figure of the human female reproductive system, what do parts A, B, C, and D represent?

    <p>A-Oviduct, B-Uterus, C-Ovarian ligament, D-Ovary</p> Signup and view all the answers

    Which of the following is NOT a valid reason for terminating a pregnancy based on the given text?

    <p>(iii) Termination of pregnancy is safe in each and every case</p> Signup and view all the answers

    Which of the following best describes hormones?

    <p>They act as intercellular messengers produced in significant quantities.</p> Signup and view all the answers

    Based on the given text, what is part B in the human female reproductive system?

    <p>Uterus</p> Signup and view all the answers

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