Science (General Knowledge)

Invertebrates are animals that lack a vertebral column (backbone or spine). This group includes diverse animals like snails (mollusks), beetles (arthropods), worms (annelids), jellyfish (cnidarians), and octopuses (mollusks). Vertebrates, like humans, dogs, and birds, have a backbone. The term 'invertebrate' comes from 'in-' meaning 'without' and 'vertebra' meaning 'joint' or 'backbone'.

The cell is the basic structural and functional unit of all living organisms.

Fibre (or dietary fiber) is essential for maintaining regular bowel movements and overall digestive health.

Chlorophyll is the pigment in plants that absorbs light energy to drive the process of photosynthesis.

The carpel (or pistil) is the female reproductive organ of a flower, consisting of the ovary, style, and stigma.

Pollination is the transfer of pollen grains from the male anther to the female stigma, which is a prerequisite for fertilization.

Air is a mixture of gases, primarily nitrogen and oxygen, that surrounds the Earth.

A habitat is the natural environment where a particular species of organism lives and thrives.

Changes in the state of matter, such as water turning from ice to liquid or steam, are primarily driven by changes in temperature.

A thermal conductor is a material that allows heat to pass through it easily.

Predators are animals that hunt, kill, and eat other animals for food. Producers are organisms like plants that make their own food, and habitats are the natural environments where organisms live.

A force is defined as a push or a pull acting upon an object. Friction is a force that opposes motion, while speed is the rate at which an object covers distance.

Light travels in straight lines, a property known as rectilinear propagation. This is why shadows are formed when an object blocks the path of light.

Sound is produced when an object vibrates, creating pressure waves in a medium like air. Light, wind, and water are distinct physical phenomena not primarily defined by vibration in this context.

The Earth completes one full rotation on its axis approximately every 24 hours, which defines the length of a day. A year is the time taken to orbit the Sun.

An herbivore is an animal that feeds exclusively on plants. Carnivores eat meat, and omnivores eat both plants and animals.

Gravity is the fundamental force of attraction that pulls objects toward the center of the Earth. Friction acts against motion between surfaces, and rotation is the movement of the Earth itself.

Water vapour is the gaseous state of water. Ice is the solid state, while matter and substance are general terms for physical materials.

Classification is the scientific process of grouping organisms based on shared characteristics. Germination refers to plant growth, and circulation refers to the movement of fluids.

During photosynthesis, plants take in carbon dioxide and water to produce glucose, releasing oxygen as a byproduct. Hydrogen and carbon dioxide are reactants, not waste products.

The flower is the reproductive part of the plant where seeds are produced. Stems, leaves, and roots have other functions like support, photosynthesis, and nutrient absorption.

A skeleton is the framework of bones that provides structure and support to the body. Muscles are tissues that move the bones, and tissues are groups of cells.

White blood cells are a key part of the immune system and are responsible for fighting off infections and diseases. Red blood cells carry oxygen, and platelets help with clotting.

Plants perform photosynthesis using sunlight energy to convert carbon dioxide and water into food. Wind and moonlight don't provide sufficient energy; lightening is a typo for lightning, which plants don't use.

Molars are the large, flat teeth located at the back of the mouth specifically designed for grinding and chewing food. Incisors are for biting, and canines are for tearing.