Unidel Post-UTME has been scheduled to hold on Monday 19th – Wensday 21st August 2024, as an Aspirate studying with the right material, is a key to success in any Post-utme exam, we have compiled proposed Questions with explanation that will aid preparation for Unidel Post-UTME exam, in this post you will have access to biology proposed Questions, and answers with clear explanation.
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Biology Proposed Questions 2
56. Which of these organs regulate the amount of sugar in the blood?
  – (A) Liver
  – (B) Kidney
  – (C) Spleen
  – (D) Lung
  – (E) Pancreas
  Correct Answer: (E) Pancreas
  Explanation: The pancreas regulates blood sugar levels by producing insulin, which helps to lower blood glucose levels and maintain balance.
57. The basis for growth and asexual reproduction is
  – (A) Meiosis
  – (B) Cytokinesis
  – (C) Mitosis
  – (D) Cytogenesis
  – (E) Cell elongation
  Correct Answer: (C) Mitosis
  Explanation: Mitosis is responsible for growth and asexual reproduction, as it produces two genetically identical daughter cells from a single parent cell.
58. The process which ensures that the chromosome number for each species of organism remains constant from generation to generation is called
  – (A) Fission
  – (B) Fusion
  – (C) Meiosis
  – (D) Mitosis
  – (E) Oogenesis
  Correct Answer: (C) Meiosis
  Explanation: Meiosis reduces the chromosome number by half to form gametes, ensuring that when fertilization occurs, the chromosome number remains constant across generations.
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59. Which of the following is a major factor in variation among organisms?
  – (A) Inbreeding
  – (B) Backcrossing
  – (C) Test crossing
  – (D) Sexual reproduction
  – (E) Gene dominance
  Correct Answer: (D) Sexual reproduction
  Explanation: Sexual reproduction combines genetic material from two parents, resulting in genetic diversity and variation among organisms.
60. ______________ is an example of an invertebrate
  – (A) Millipede
  – (B) Fish
  – (C) Toad
  – (D) Snake
  – (E) Skin
  Correct Answer: (A) Millipede
  Explanation: A millipede is an invertebrate, meaning it lacks a backbone, unlike the other options which are vertebrates.
61. ______________ is the odd one in the list below
  – (A) Mosquito
  – (B) Bee
  – (C) Moth
  – (D) Tick
  – (E) Beetle
  Correct Answer: (D) Tick
  Explanation: A tick is an arachnid, whereas the others (mosquito, bee, moth, and beetle) are insects.
62. _______________ are flatworms
  – (A) Platyhelminthes
  – (B) Annelida
  – (C) Nematoda
  – (D) Diplopoda
  – (E) Chilopoda
  Correct Answer: (A) Platyhelminthes
  Explanation: Platyhelminthes is the phylum that includes flatworms, which are characterized by their flattened body shape.
63. _______________ is an example of a unicellular organism
  – (A) Amoeba sp.
  – (B) Hydra sp.
  – (C) Ascaris sp.
  – (D) Taenia sp.
  – (E) Obelia sp.
  Correct Answer: (A) Amoeba sp.
  Explanation: Amoeba is a unicellular organism that performs all life functions within a single cell.
64. _______________ level is the highest level of organization in animals.
  – (A) System
  – (B) Tissue
  – (C) Organ
  – (D) Cellular
  – (E) Protoplasmic
  Correct Answer: (A) System
  Explanation: The system level is the highest organizational level in animals, involving multiple organs working together to perform complex functions.
65. Crocodiles are
  – (A) Fishes
  – (B) Amphibians
  – (C) Mammals
  – (D) Birds
  – (E) None of the above
  Correct Answer: (E) None of the above
  Explanation: Crocodiles are reptiles, not fishes, amphibians, mammals, or birds.
66. The mutation theory of organic evolution was propounded by
  – (A) Gregor Mendel
  – (B) Hugo de Vries
  – (C) Jean Lamarck
  – (D) Charles Darwin
  – (E) Robert Hooke
  Correct Answer: (D)Charles Darwin Â
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67. The theory of natural selection was developed by
  – (A) Lamarck and Darwin
  – (B) Darwin and Wallace
  – (C) Wallace and Mendel
  – (D) Mendel and Lamarck
  – (E) Hooke and Darwin
  Correct Answer: (B) Darwin and Wallace
  Explanation: Charles Darwin and Alfred Russel Wallace jointly developed the theory of natural selection, which explains how evolutionary changes occur through differential survival and reproduction.
68. Which is the odd animal in the list below?
  – (A) Lizards
  – (B) Snakes
  – (C) Turtles
  – (D) Tortoise
  – (E) Toad
  Correct Answer: (E) Toad
  Explanation: A toad is an amphibian, while lizards, snakes, turtles, and tortoises are reptiles.
69. Which of the following sources is not an evidence of evolution?
  – (A) Fossil records
  – (B) Comparative anatomy
  – (C) Comparative embryology
  – (D) Human behavior
  – (E) None of the above
  Correct Answer: (D) Human behavior
  Explanation: Fossil records, comparative anatomy, and comparative embryology provide evidence for evolution, while human behavior does not.
70. _______________ is an endoparasite
  – (A) Earthworm
  – (B) Tapeworm
  – (C) Mosquito
  – (D) Housefly
  – (E) Tsetse fly
  Correct Answer: (B) Tapeworm
  Explanation: A tapeworm is an endoparasite, living inside the host’s body and deriving nutrients from it.
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