Science Exam Practice Quiz! Trivia

A harvestman is classified as an arachnid. Arachnids are a class of joint-legged invertebrate animals, which also includes spiders, scorpions, and ticks. Harvestmen, also known as daddy longlegs, have a body structure similar to spiders, with eight long legs and a segmented body. They belong to the order Opiliones, and while they may resemble spiders, they are a separate group within the arachnid class. Harvestmen are known for their ability to eat small insects and decomposing matter, making them important contributors to the ecosystem.

A zorro is a type of animal that belongs to the mammal category. Mammals are warm-blooded vertebrates that have hair or fur, give birth to live young, and nourish their babies with milk produced by mammary glands. Zorros, also known as foxes, are small to medium-sized mammals that are known for their bushy tails and pointed snouts. They are part of the Canidae family and are found in various habitats around the world.

A butterfly's life cycle consists of four stages: egg, larva (caterpillar), pupa (chrysalis), and adult. The butterfly starts as an egg, hatches into a caterpillar, then forms a chrysalis where it undergoes metamorphosis, and finally emerges as an adult butterfly. Therefore, the correct answer is 4.

Von Baer's law, also known as the biogenetic law, states that during embryonic development, the features of an organism go through stages that resemble the evolutionary history of its ancestors. This means that the development of an organism reflects the evolutionary changes that have occurred over time. This law was proposed by Karl Ernst von Baer, a Baltic German biologist and embryologist, in the 19th century.

A typical house fly lives for about 2 weeks. House flies have a relatively short lifespan compared to other insects. They go through a complete metamorphosis, starting as eggs, then hatching into larvae (maggots), pupating, and finally emerging as adult flies. The adult flies have a short period of time to reproduce and complete their life cycle before they die. This short lifespan allows them to quickly reproduce and populate areas with their offspring.

Bees can see ultraviolet light. Bees have a unique ability to perceive ultraviolet light, which is invisible to the human eye. This allows them to see patterns on flowers that are not visible to other insects or animals. Bees use this ability to locate nectar and pollen, as well as to navigate and communicate with other bees. The ability to see ultraviolet light is crucial for bees' survival and plays a significant role in their role as pollinators.

Red algae is the correct answer because it is a type of living thing that naturally produces agar. Agar is a gelatinous substance that is derived from the cell walls of certain seaweeds, including red algae. It is commonly used in laboratories for growing bacteria, fungi, and other microorganisms. Red algae are known for their ability to produce agar, which is why they are commonly used in the production of this substance.

The tiny plant that starts to grow inside a seed is called an embryo. This is the early stage of development for the plant, where it begins to form and grow within the protective covering of the seed. As the embryo continues to develop, it will eventually sprout and grow into a fully mature plant.

An energy pyramid is a diagram that illustrates the flow of energy through different trophic levels in an ecosystem. It shows how energy is transferred from producers (plants) to primary consumers (herbivores), secondary consumers (carnivores), and so on. The pyramid shape represents the decrease in available energy as you move up the trophic levels, with the highest energy being at the bottom and gradually decreasing as you go up. This diagram helps to visualize the energy relationships and the efficiency of energy transfer within an ecosystem.

The zygote of a gymnosperm develops in the ovule. The ovule is a structure within the female reproductive organ of a gymnosperm where fertilization occurs. After pollination, the pollen tube delivers the sperm to the ovule, where it fertilizes the egg cell, forming a zygote. Therefore, the correct answer is "In The Ovule."

A giraffe's neck has 7 bones. Giraffes have extremely long necks, but surprisingly, they have the same number of neck bones as humans. The long neck is made possible by the lengthening and fusion of these 7 vertebrae. This adaptation allows giraffes to reach high vegetation and engage in neck battles with other males during mating season.

The name given to all the living things of an ecosystem is "Community". In an ecosystem, a community refers to the various populations of different species that interact and live together in a specific area. It includes all the plants, animals, and other organisms that are part of the ecosystem and interact with each other. The concept of a community helps to understand the relationships and dynamics between different species within an ecosystem.

Gametophytes are responsible for producing the egg and sperm cells during the life cycles of plants. In plants, the life cycle alternates between two generations, the gametophyte and sporophyte. The gametophyte generation is haploid and produces gametes through mitosis. These gametes, which are the egg and sperm cells, fuse during fertilization to form a zygote. The zygote then develops into the sporophyte generation, which is diploid. Therefore, the correct answer is Gametophytes.

Renin is an enzyme that plays a crucial role in regulating blood pressure and fluid balance in the body. It is primarily produced and released by the kidneys. The kidneys have specialized cells called juxtaglomerular cells that produce and release renin into the bloodstream in response to various signals, such as low blood pressure or low sodium levels. Once released, renin acts on a protein called angiotensinogen, leading to a cascade of reactions that ultimately result in the production of a hormone called angiotensin II, which constricts blood vessels and increases blood pressure. Therefore, the correct answer is Kidney.

Alexander Wiener is the correct answer because he was the doctor who helped Dr. Landsteiner discover the Rh factor. Dr. Landsteiner made the initial discovery of the Rh factor, but it was Dr. Wiener who further researched and developed the understanding of the Rh factor and its implications in blood transfusions. Together, they made significant contributions to the field of blood typing and transfusion medicine.

Vitamin E refers to a family of related compounds called tocopherols. It is a fat-soluble vitamin that acts as an antioxidant in the body, protecting cells from damage caused by free radicals. Vitamin E is important for maintaining healthy skin, eyes, and immune function.

Ferns must live in moist environments to transport spores to a new location. Spores are reproductive cells that ferns produce, and they need moisture to be able to disperse and reach new areas. In dry environments, the spores would not be able to travel effectively, limiting the fern's ability to reproduce and spread. Therefore, living in moist environments ensures that ferns can transport their spores to find suitable conditions for growth and reproduction.

The bone of the forearm that runs alongside the thumb is called the radius. The radius is one of the two bones in the forearm, the other being the ulna. The radius is located on the thumb side of the forearm and is responsible for rotating the forearm and allowing movement of the hand and wrist.

Wasps hold on to stems while sleeping with their jaws. This is because their jaws have strong muscles that allow them to grip onto surfaces tightly. By using their jaws, wasps are able to secure themselves to stems and other surfaces, preventing them from falling off while they sleep.

Cell walls in green plants are made of cellulose. Cellulose is a complex carbohydrate that provides structural support to the plant cells. It forms a rigid framework, giving strength and stability to the cell walls. Cellulose is the most abundant organic compound on Earth and is responsible for the rigidity and shape of plant structures.