1.
What kind of stem would an oak tree have?
Correct Answer
A. Woody Stem
Explanation
An oak tree would have a woody stem because oak trees are large, long-lived trees that have a strong and durable stem made of wood. This type of stem provides support and allows the tree to grow tall and withstand harsh weather conditions. Woody stems also contain vascular tissues that transport water, nutrients, and sugars throughout the tree.
2.
What kind of tree loses all its leaves during a dormant period like winter?
Correct Answer
B. Deciduous
Explanation
Deciduous trees are the type of trees that lose all their leaves during a dormant period like winter. Unlike evergreen trees that retain their leaves year-round, deciduous trees shed their leaves in response to changes in temperature and daylight duration. This adaptation helps them conserve energy and protect themselves from harsh winter conditions. Coniferous trees, on the other hand, are evergreen trees that have needle-like or scale-like leaves and bear cones. "Amorous" is not related to the characteristics of trees and is an unrelated option.
3.
What connects flower buds to the stem?
Correct Answer
C. Sepals
Explanation
Sepals are the outermost part of a flower bud and they connect the flower buds to the stem. They are usually green and leaf-like in appearance. Sepals protect the developing flower bud and provide support to the petals when the flower blooms. They also help in attracting pollinators and regulating the opening and closing of the flower bud.
4.
What is another name for growth of living organisms?
Correct Answer
A. Development
Explanation
Development is another name for the growth of living organisms. It refers to the process of maturation and progression of an organism from its initial stage to a more complex and mature state. Development involves various changes in the structure, function, and behavior of an organism, including growth in size, differentiation of cells, and acquisition of new abilities and characteristics.
5.
What is the expected time an organism will live called?
Correct Answer
C. Life Span
Explanation
The expected time an organism will live is referred to as its life span. This term encompasses the average duration of an individual's life from birth to death. It is a measure used to understand the longevity and survival patterns of different species. The concept of life span is crucial in various fields, including biology, ecology, and medicine, as it helps in studying the aging process, life expectancy, and factors that influence the length of an organism's life.
6.
Which is a change in the environment that brings a response?
Correct Answer
C. Stimulus
Explanation
A stimulus is a change in the environment that triggers a response. It can be any external factor or event that elicits a reaction or behavior. In this context, the other options (stylus, simulation, and Smilodon) do not fit the definition of a change in the environment that brings a response.
7.
Which does a mycologist study?
Correct Answer
D. Fungus
Explanation
A mycologist is a scientist who studies fungi. Fungi are a group of organisms that include mushrooms, molds, and yeasts. They play important roles in ecosystems, such as decomposing organic matter and forming symbiotic relationships with plants. Mycologists study various aspects of fungi, including their classification, identification, ecology, and potential uses in medicine and industry. They may conduct research, collect and analyze samples, and contribute to our understanding of fungal diversity and their impact on the environment.
8.
What does an ornithologist study?
Correct Answer
B. Birds
Explanation
An ornithologist is a scientist who specializes in the study of birds. They observe and analyze various aspects of birds, such as their behavior, physiology, ecology, and evolution. Ornithologists may also conduct research on bird populations, migration patterns, and conservation efforts. By studying birds, ornithologists contribute to our understanding of the natural world and help in the conservation and protection of bird species and their habitats.
9.
What scientists study insects?
Correct Answer
B. Entomologists
Explanation
Entomologists study insects. They specialize in the scientific study of insects, including their behavior, classification, physiology, ecology, and evolution. They conduct research to understand the various aspects of insect life, their impact on ecosystems, and their interactions with humans. By studying insects, entomologists contribute to the fields of agriculture, medicine, conservation, and pest control. Ornithologists study birds, meteorologists study weather and climate, and oceanographers study the oceans.
10.
Which of the following is alive?
Correct Answer
B. Bacteria
Explanation
Bacteria is considered alive because it exhibits characteristics of life such as reproduction, growth, and response to stimuli. Bacteria are single-celled microorganisms that can be found in various environments. They can reproduce through binary fission, where one cell divides into two identical daughter cells. Bacteria also have the ability to metabolize nutrients and produce energy, allowing them to grow and survive. Additionally, they can respond to changes in their environment, such as moving towards or away from certain substances. Therefore, bacteria fulfill the criteria for being classified as living organisms.
11.
What type of tissue does the adenovirus affect?
Correct Answer
C. Adenoids Tissue
Explanation
The correct answer is Adenoids Tissue. Adenovirus is a type of virus that primarily affects the adenoids, which are a type of tissue located in the back of the throat. Adenoids play a role in the immune system by trapping and filtering bacteria and viruses that enter the body through the nose and mouth. When infected with adenovirus, the adenoids can become swollen and inflamed, leading to symptoms such as sore throat, difficulty swallowing, and nasal congestion.
12.
What is the cell where a virus reproduces called?
Correct Answer
C. Host Cell
Explanation
A virus reproduces inside a host cell, using the cell's machinery to replicate itself. The host cell provides the necessary resources and environment for the virus to replicate and produce more viral particles. Therefore, the correct answer is "Host Cell".
13.
What can be made from the particles of a dead virus to prevent the disease caused by that virus?
Correct Answer
C. Vaccine
Explanation
A vaccine can be made from the particles of a dead virus to prevent the disease caused by that virus. Vaccines contain weakened or inactivated forms of the virus, or specific parts of the virus, which stimulate the immune system to recognize and remember the virus. This helps the body to produce an immune response when exposed to the actual virus, preventing the disease from developing or reducing its severity.
14.
What is the basic unit of function and structure in living organisms?
Correct Answer
D. Cells
Explanation
Cells are the basic unit of function and structure in living organisms. They are the smallest independently functioning unit of life and are responsible for carrying out all the necessary processes for an organism to survive. Cells can vary in size and shape, but they all have a similar structure and contain various organelles that perform specific functions. They are the building blocks of life and are essential for the proper functioning of living organisms.
15.
What forms the outer boundary of a cell and controls material moving in and out of the cell?
Correct Answer
B. Cell Membrane
Explanation
The cell membrane forms the outer boundary of a cell and controls the movement of materials in and out of the cell. It acts as a barrier, allowing certain substances to pass through while preventing others from entering or leaving the cell. This selective permeability is essential for maintaining the cell's internal environment and regulating its interactions with the external environment. The cell membrane is composed of a phospholipid bilayer with embedded proteins that facilitate the transport of molecules across the membrane.
16.
What are the long strands of genetic material in the nucleus called?
Correct Answer
C. Chromatin
Explanation
Chromatin refers to the long strands of genetic material found in the nucleus of a cell. It consists of DNA molecules wrapped around proteins called histones. During cell division, chromatin condenses to form chromosomes, which carry the genetic information necessary for the cell's functioning. This term accurately describes the structure and function of the genetic material in the nucleus.
17.
What are the structures found in the cytoplasm of eukaryotic cells called?
Correct Answer
B. Organelles
Explanation
Organelles are the structures found in the cytoplasm of eukaryotic cells. These specialized compartments perform specific functions necessary for the cell's survival and are surrounded by a membrane. Examples of organelles include the nucleus, mitochondria, endoplasmic reticulum, Golgi apparatus, and lysosomes. They play crucial roles in processes such as protein synthesis, energy production, and waste removal. Unlike prokaryotic cells, eukaryotic cells have membrane-bound organelles that allow for compartmentalization and efficient organization of cellular activities.
18.
Which doctor or team of doctors is credited with pioneering the scientific study of human sexuality?
Correct Answer
B. Masters And Johnson
Explanation
Masters and Johnson are credited with pioneering the scientific study of human sexuality. They conducted extensive research on human sexual response and behavior, publishing their findings in the groundbreaking book "Human Sexual Response" in 1966. Their research methods and findings revolutionized the understanding of human sexuality and laid the foundation for future studies in the field. Dr. Ruth is a well-known sex therapist, but she did not contribute to the scientific study of human sexuality to the same extent as Masters and Johnson. Dr. Spock, on the other hand, was a pediatrician and author known for his expertise in child care and development, not human sexuality.
19.
Who was credited with the discovery of the DNA basic structures?
Correct Answer
A. Watson And Crick
Explanation
Watson and Crick are credited with the discovery of the DNA basic structures. They proposed the double helix structure of DNA, which was based on the X-ray crystallography work of Rosalind Franklin. Their discovery revolutionized the field of genetics and laid the foundation for understanding the mechanisms of heredity and the genetic code.
20.
What is the correct plural of Keeshond?
Correct Answer
D. Keeshonden
Explanation
The correct plural of Keeshond is "Keeshonden." In English, when a noun ends in "d," "t," "s," "x," or "z," we usually add "-en" to form the plural. Therefore, "Keeshonden" is the appropriate plural form for this particular breed of dog.