SECTION V Questions 31-40 (Ten questions) Directions: Each question consists of four lettered headings A, B, C, D. Select the heading which is closely related to the description which follows.

here are the solutions to the questions: Question 31: Step 1: Understand the question. It asks for the process that releases carbon dioxide into the atmosphere. Step 2: Evaluate the options. Respiration (cellular respiration) is the biological process where organic molecules are broken down to release energy, and carbon dioxide is a byproduct released into the atmosphere. Photosynthesis consumes carbon dioxide. The correct option is C. C) Respiration Question 32: Step 1: Identify the function described: "Controls balance and posture." Step 2: Recall the functions of brain parts. The cerebellum is primarily responsible for coordinating voluntary movements, balance, and posture. The correct option is B. B) Cerebellum Question 33: Step 1: Define the terms related to genetics. Step 2: A "pair of non-identical genes for the same characteristics" describes a heterozygous condition, where an individual has two different alleles for a particular gene. The correct option is D. D) Heterozygous Question 34: Step 1: Understand the description: "An association between two organisms in which both benefit." Step 2: Recall types of symbiotic relationships. Mutualism is a symbiotic relationship where both organisms involved benefit from the interaction. The correct option is C. C) Mutualism Question 35: Step 1: Interpret the phrase: "A natural self-sustaining unit." Step 2: An ecosystem is defined as a community of living organisms interacting with their non-living environment, forming a self-sustaining unit. The correct option is D. D) Ecosystem Question 36: Step 1: Identify the hormone produced "during fright." Step 2: Adrenaline (also known as epinephrine) is a hormone released by the adrenal glands in response to stress, fear, or excitement, preparing the body for a "fight or flight" response. The correct option is D. D) Adrenaline Question 37: Step 1: Determine what "causes malaria." Step 2: Malaria is caused by the parasite Plasmodium, which is transmitted to humans through the bite of infected female Anopheles mosquitoes. The correct option is A. A) Plasmodium Question 38: Step 1: Identify the deficiency that leads to "anaemia." Step 2: Iron is a crucial component of hemoglobin, the protein in red blood cells that carries oxygen. A deficiency in iron leads to iron-deficiency anemia. The correct option is C. C) Iron Question 39: Step 1: Identify the type of tooth "used for tearing of flesh." Step 2: Canine teeth are pointed and sharp, adapted for piercing and tearing food, especially flesh. The correct option is B. B) Canine Question 40: Step 1: Identify which substance "is an air pollutant." Step 2: Lead particles are a well-known air pollutant, often originating from industrial emissions or combustion of leaded fuels. Nitrogen gas and oxygen are natural components of air, and while mercury can be an air pollutant, lead particles are a more direct and common example in this context. The correct option is A. A) Lead particles Question 41: Step 1: Analyze the scenario: Red blood corpuscles in distilled water, resulting in only cell fragments. Step 2: Distilled water is a hypotonic solution. When red blood cells are placed in it, water moves into the cells by osmosis due to the water potential gradient. Since animal cells lack a cell wall, they swell and eventually burst (hemolysis), leaving fragments. The correct option is B. B) Osmosis Question 42: Step 1: Understand the process: Transport of soluble products of photosynthesis from leaves to storage organs in plants. Step 2: The process by which sugars (products of photosynthesis) are transported through the phloem from source (leaves) to sink (storage organs, roots, growing parts) is called translocation. The correct option is C. C) Translocation What's next?