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
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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