JAMB UTME - Physical Education - 2023

The key locomotor skills refer to the movement skills that involve the coordination and control of the body. They are important for physical development and daily functioning. Among the listed options, singing is not a locomotor skill.

Crawling is the movement skill where an individual moves on their hands and knees or hands and feet while their abdomen is off the ground.

Climbing is the locomotor skill where an individual ascends or descends an object or structure using their hands and feet.

Walking is a well-known locomotor skill that involves moving forward in a rhythmic manner by alternating steps between the feet while maintaining balance.

On the other hand, singing is a form of vocalization using the voice to produce musical tones and vocal sounds, which is not directly related to body movement and coordination.

Therefore, among the given options, singing is the key locomotor skill that is not included in the list.

The purpose of food is to provide energy, enhance growth, and eliminate hunger. However, increasing hunger is not a purpose of food. Rather, food is consumed to satisfy hunger and provide nourishment for our bodies.

31 pairs of spinal nerves are located in the human body.

The spinal nerves are part of the peripheral nervous system, which is responsible for transmitting signals between the central nervous system (brain and spinal cord) and the rest of the body.

The nerves emerge from the spinal cord in the vertebral column and pass through spaces called intervertebral foramina to reach different parts of the body.

There are 31 pairs of spinal nerves in total:

- 8 pairs of cervical nerves (C1-C8): These emerge from the nekc area and supply signals to the neck, shoulders, arms, and hands.

- 12 pairs of thoracic nerves (T1-T12): These emerge from the upper back area and supply signals to the chest, abdomen, and back.

- 5 pairs of lumbar nerves (L1-L5): These emerge from the lower back area and supply signals to the lower back, buttocks, and legs.

- 5 pairs of sacral nerves (S1-S5): These emerge from the pelvis area and supply signals to the pelvis, genitals, and legs.

- 1 pair of coccygeal nerves: These emerge from the base of the spine and supply signals to the tailbone area.

Each pair of spinal nerves has a sensory component, which carries signals from the body to the spinal cord and a motor component, which carries signals from the spinal cord to the muscles and organs.

By having 31 pairs of spinal nerves, the human body is able to send and receive signals to and from every part of the body, allowing for movement, sensation, and control over bodily functions.

Fruits and vegetables are important for several reasons:

1. They give you energy: Fruits and vegetables are packed with carbohydrates, which are the body's main source of energy. They provide us with the fuel we need to go about our daily activities.

2. They are easily available: Fruits and vegetables are widely accessible in grocery stores, farmers' markets, and even in our own backyards. They are readily available, making it convenient for us to incorporate them into our diets.

3. They are colorful: Fruits and vegetables come in a wide array of vibrant colors such as red, orange, green, and purple. These colors are not just visually appealing, but they also indicate the presence of different nutrients and antioxidants that are essential for our health.

4. They provide you with a wide variety of vitamins, minerals, and nutrients: Fruits and vegetables are rich in vitamins, minerals, and nutrients that our bodies need to function properly. They are excellent sources of vitamin C, vitamin A, potassium, fiber, and folate, among others.

In conclusion, fruits and vegetables give us energy, are easily available, add color to our meals, and provide us with a wide range of essential vitamins, minerals, and nutrients. It is important to include them in our daily diet for overall health and wellbeing.

The swimming stroke that is not listed among the options is the downstroke.

Let's briefly discuss the other three swimming strokes to understand why the downstroke is not considered a swimming stroke:

Crawl: Also known as freestyle, the crawl is the fastest and most commonly used stroke in competitive swimming. It involves a continuous alternating arm motion and a flutter kick. Swimmers move their arms in a windmill-like pattern, pulling the water towards them, while their legs kick in a repetitive up and down motion.

Backstroke: As the name suggests, swimmers swim on their backs, facing up. The main propulsive force in backstroke comes from the alternating arm movement, similar to the crawl stroke. The arms move in a wider arc, and the hands enter the water pinky-first. The legs perform a flutter kick, similar to that of the crawl stroke.

Breaststroke: The breaststroke is the slowest of the four competitive swimming strokes, but it is often considered the most graceful. Swimmers synchronize a frog-like kick and an arm pull to propel themselves through the water. The arms move together in a half-circle motion underwater, while the legs kick outwards and then back inwards simultaneously.

Downstroke: The term "downstroke" does not correspond to any recognized swimming stroke. It may be a term used in other contexts or in certain swimming drills, but it is not a distinct swimming stroke like the crawl, backstroke, or breaststroke.