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Current Affairs January 2024

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4

What is the primary function of the root system in plants?

A. Photosynthesis

B. Anchoring the plant and absorbing water and nutrients

C. Producing flowers and fruits

D. Transporting sugars

Correct Answer :

B. Anchoring the plant and absorbing water and nutrients


Related Questions

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What is the primary function of the mitochondria?

A. Protein synthesis

B. Energy production

C. Lipid synthesis

D. Waste elimination

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What term describes the role a species plays in its ecosystem, including its interactions with other species and its use of resources?

A. Niche

B. Habitat

C. Territory

D. Ecosystem role

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What is the largest organ in the human body?

A. Brain

B. Liver

C. Skin

D. Heart

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Which of the following is the smallest unit of the nervous system?

A. Neuron

B. Nerve

C. Ganglion

D. Brain

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What is the term for the study of human societies, cultures, and behaviors?

A. Sociology

B. Anthropology

C. Psychology

D. Archaeology

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What is the function of the human respiratory system?

A. Regulation of blood sugar levels

B. Transportation of oxygen and carbon dioxide

C. Digestion of food

D. Filtration of blood

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What is the function of the cell membrane?

A. Synthesizing proteins

B. Protecting the nucleus

C. Regulating the passage of substances in and out of the cell

D. Storing genetic information

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What is the term for the process by which modern humans gradually replaced archaic humans, such as Neanderthals, through migration and competition?

A. Speciation

B. Coevolution

C. Extinction

D. Out-of-Africa hypothesis

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What is the process by which segments of DNA are shuffled during the formation of gametes, leading to genetic diversity?

A. Meiosis

B. Mitosis

C. Replication

D. Crossing over

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What is the term for the process by which plants lose water vapor through small openings in their leaves?

A. Transpiration

B. Photosynthesis

C. Respiration

D. Osmosis

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4

What is the primary function of the fallopian tubes in the female reproductive system?

A. Menstruation

B. Fertilization of the egg by sperm

C. Implantation of the fertilized egg in the uterus

D. Production of estrogen

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4

Which type of muscle is responsible for voluntary movements in the body?

A. Smooth muscle

B. Cardiac muscle

C. Skeletal muscle

D. Involuntary muscle

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4

A human male has how many sex chromosomes?

A. 1

B. 2

C. 23

D. 46

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What is the primary function of the root system in plants?

A. Photosynthesis

B. Anchoring the plant and absorbing water and nutrients

C. Producing flowers and fruits

D. Transporting sugars

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4

Which term refers to structures that have no apparent function but resemble functional structures in other organisms?

A. Homologous structures

B. Analogous structures

C. Vestigial structures

D. Adaptive structures

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What is the function of the human gallbladder?

A. Storage of bile

B. Production of insulin

C. Digestion of proteins

D. Filtration of blood

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4

Which of the following is a viral disease transmitted through the bite of infected mosquitoes?

A. Tuberculosis

B. Malaria

C. Influenza

D. Lyme disease

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What is the term for a gene that is expressed when present, even if only one copy is present in an individual's genotype?

A. Recessive

B. Dominant

C. Co-dominant

D. Allelic

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What is the term for the shedding of the uterine lining in the absence of pregnancy, resulting in menstruation?

A. Ovulation

B. Fertilization

C. Menarche

D. Menstruation

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In which type of population distribution are individuals evenly spaced throughout their habitat?

A. Random dispersion

B. Clumped dispersion

C. Uniform dispersion

D. Overlapping dispersion

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What term describes the variety of different species in a particular habitat or ecosystem?

A. Species richness

B. Genetic diversity

C. Ecosystem diversity

D. Species evenness

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What is the term for the innate, automatic response of an organism to a stimulus?

A. Conditioning

B. Habituation

C. Reflex

D. Instinct

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The smallest unit of a chemical element that retains the properties of that element is called:

A. Atom

B. Molecule

C. Cell

D. Tissue

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What is the main function of the kidneys in the human body?

A. Regulation of blood sugar levels

B. Production of red blood cells

C. Filtration of blood and excretion of waste products

D. Digestion of food

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Which of the following is NOT a function of the cell wall in plant cells?

A. Providing structural support

B. Regulating osmotic balance

C. Facilitating cell communication

D. Protecting against pathogens

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Which of the following is a bacterial disease that primarily affects the respiratory system and can be prevented by vaccination?

A. Tuberculosis

B. Malaria

C. Cholera

D. Whooping cough (Pertussis)

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Which of the following is an example of an invasive species?

A. Native grasses in their natural habitat

B. A non-native tree planted in a garden

C. A species that naturally occurs in a specific ecosystem

D. A species that is endangered

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What is the term for the process by which two unrelated species evolve similar traits in response to similar environmental pressures?

A. Natural selection

B. Convergent evolution

C. Artificial selection

D. Coevolution

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What is the function of the pancreas in the human body?

A. Digestion of proteins

B. Regulation of blood sugar levels

C. Filtration of blood

D. Production of bile

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What is the term for a change in the sequence of DNA that can be passed on to offspring?

A. Gene flow

B. Genetic drift

C. Mutation

D. Natural selection