1.
What process best demonstrates an organism's ability to grow?
Correct Answer
B. Reproduction
Explanation
Reproduction illustrates an organism’s ability to grow because it involves the creation of new organisms, starting from a single cell and progressing through complex stages of development. This process showcases the organism's capacity to develop fully functional, complex life forms. The ability to reproduce is a direct indicator of an organism’s growth potential, as it requires the synthesis of new cells, tissues, and organs. Successful reproduction also reflects the organism's overall health and vitality, as it must have the necessary resources and mechanisms in place to support the growth of new life, thus ensuring the continuation of its species.
2.
Which characteristic is common to all living organisms?
Correct Answer
C. They reproduce.
Explanation
Reproduction is a fundamental characteristic shared by all living organisms, distinguishing them from non-living things. It ensures the survival of species through generations by passing on genetic material. While other options like living on land or using sunlight describe certain groups of organisms, reproduction is universal across all life forms, whether they are plants, animals, or microorganisms, making it the correct choice.
3.
What is the term for an organism's ability to maintain stable internal conditions?
Correct Answer
B. Homeostasis
Explanation
Homeostasis refers to the process by which living organisms maintain a stable internal environment despite changes in external conditions. This is crucial for survival as it ensures optimal functioning conditions for cellular processes. Mutation, metabolism, and adaptation are related to genetic changes, energy use, and long-term survival strategies respectively, but homeostasis specifically refers to the immediate and ongoing regulation of internal conditions like temperature and pH levels.
4.
How do living things respond to their environment?
Correct Answer
D. All of these
Explanation
The ability to alter growth rate as a response to environmental changes shows an organism's adaptability and survival strategy. Moving, changing color, or any singular response might not encompass all environmental responses. The correct answer, encompassing all these responses, indicates a comprehensive adaptation strategy to environmental stimuli, which could include seeking resources, avoiding predators, or optimizing reproduction, crucial for survival and reproduction.
5.
Which function is not performed by all living organisms?
Correct Answer
D. Telepathy
Explanation
Telepathy is not a function performed by any known living organism and does not fall under the scientific understanding of biological processes. Breathing, growing, and consuming energy are fundamental biological processes essential for life. Telepathy, being a fictional or speculative ability, does not align with the biological characteristics of life, making it the correct choice as the function not performed by living organisms.
6.
What is essential for an organism to adapt to its environment?
Correct Answer
D. Ability to mutate
Explanation
The ability to mutate is essential for an organism to adapt to its environment as it involves changes in the genetic material that can lead to new traits better suited to new or changing environments. While mating, changing color, and learning are also adaptive traits, mutation directly influences genetic variability, providing a broader range of potential adaptations that can be naturally selected for enhanced survival.
7.
Which of these is a result of reproduction?
Correct Answer
B. Genetic diversity
Explanation
Genetic diversity, the result of reproduction, is crucial for the adaptability and survival of species. It provides a pool of genetic variations, from which beneficial traits can be selected, enhancing a species' ability to cope with environmental changes and diseases. This diversity is key to evolutionary processes, allowing species to adapt over generations, unlike the other options which are more individual or immediate benefits.
8.
What is an example of metabolism in animals?
Correct Answer
B. Digesting food
Explanation
Digesting food is a metabolic activity involving chemical reactions that break down food into energy and building materials for the body. This process is central to an animal's ability to sustain itself and grow. Other options like sleeping or jumping are activities that involve energy usage but are not processes of converting food into energy, which is what defines metabolism.
9.
Why is sensitivity to the environment important for organisms?
Correct Answer
D. All of these
Explanation
Sensitivity to the environment is vital for organisms to find food, escape predators, or reproduce, ensuring their survival and continuation of species. This trait enables organisms to react to changes and challenges in their surroundings, supporting their adaptation and survival strategies. The ability to respond to environmental stimuli, encompassing all listed responses, is fundamental for the ongoing success and viability of any life form.
10.
Which activity is a direct result of growth in organisms?
Correct Answer
A. Increased need for energy
Explanation
An increased need for energy directly results from growth in organisms because as they grow, their bodily functions and structures become more extensive and complex, requiring more energy to maintain and operate. This increased energy demand supports the continued growth and maintenance of the organism, aligning with metabolic needs. Other options do not directly relate to the consequences of growth, focusing instead on limitations or reductions in function rather than growth-driven demands.