POST UTME ELIZADE UNIVERSITY 2021 Biology | Objective

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Question 1
In a tropical rainforest, the rate of photosynthesis is higher than in a desert e\cosystem due to the presence of
A. more abundant water supply
B. higher temperature
C. greater availability of light
D. increased CO2 concentration
Question 2
In the process of respiration, what is the primary function of the mitochondria?
A. To generate ATP through the process of cellular respiration
B. To store energy in the form of glycogen
C. To transport oxygen from the lungs to the body's cells
D. To remove waste products from the body
Question 3
What is the primary mechanism by which the nervous system coordinates the body's responses to stimuli?
A. The release of hormones from the \endocrine system
B. The transmission of electrical signals through the nervous system
C. The contraction and relaxation of muscles
D. The exchange of gases between the body and the environment
Question 4
In the xylem, what is the primary function of the tracheids?
A. To transport water and minerals from the roots to the leaves
B. To store water and nutrients in the plant
C. To facilitate gas exchange between the plant and the atmosphere
D. To regulate the plant's water potential
Question 5
The process by which plants convert light energy into chemical energy is called
A. Respiration
B. Photosynthesis
C. Transpiration
D. Translocation
Question 6
Which of the following types of respiration is characterized by the breakdown of glu\cose to produce ATP in the presence of oxygen?
A. Aerobic respiration
B. Anaerobic respiration
C. Fermentation
D. Photosynthesis
Question 7
In the human kidney, the nephrons filter the blood to remove waste products and excess ions. What is the primary function of the glomerulus in the nephron?
A. To reabsorb glu\cose and amino acids
B. To filter the blood
C. To regulate blood pressure
D. To produce urine
Question 8
The process of excretion in humans involves the removal of waste products from the body through
A. kidneys
B. liver
C. lungs
D. skin
Question 9
In the human nervous system, the hypothalamus plays a crucial role in regulating body temperature. What is the primary mechanism by which the hypothalamus maintains homeostasis?
A. Thermoregulation
B. Hormone secretion
C. Neurotransmitter release
D. Electrical impulses
Question 10
Which of the following types of classification is based on the physical characteristics of organisms?
A. Phy\logenetic classification
B. Morpho\logical classification
C. Biogeographical classification
D. Eco\logical classification
Question 11
A species of flowering plant has a reproductive strategy that involves the production of seeds without fertilization. What is the term for this reproductive strategy?
A. Apomixis
B. Parthenogenesis
C. Endosymbiosis
D. Mutualism
Question 12
What is the process by which plants convert light energy into chemical energy?
A. Respiration
B. Photosynthesis
C. Fermentation
D. Decomposition
Question 13
What is the primary mechanism by which the body regulates its growth and development?
A. The release of growth hormones from the pituitary gland
B. The transmission of signals from the nervous system to the body's cells
C. The exchange of nutrients and waste products between the body and the environment
D. The contraction and relaxation of muscles
Question 14
In a freshwater e\cosystem, the primary producers are typically phytoplankton, which undergo photosynthesis to produce glu\cose and oxygen. What is the byproduct of photosynthesis that is released into the atmosphere?
A. Carbon dioxide
B. Oxygen
C. Nitrogen
D. Water
Question 15
In a eukaryotic cell, the process of mitosis involves the division of the nucleus into two daughter nuclei, each containing the same number and kind of chromosomes as the parent nucleus. Which of the following stages of mitosis is characterized by the condensation of chromosomes and the shortening of the centrioles?
A. Prophase
B. Metaphase
C. Anaphase
D. Telophase

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