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Current Affairs January 2024

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4

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

Correct Answer :

B. Convergent evolution


Related Questions

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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 bone in the human body is often referred to as the collarbone?

A. Radius

B. Femur

C. Clavicle

D. Tibia

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Which scientist is credited with developing the theory of natural selection?

A. Charles Darwin

B. Gregor Mendel

C. Louis Pasteur

D. Alfred Wegener

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4

Which blood vessels carry oxygenated blood away from the heart to the body's tissues?

A. Veins

B. Arteries

C. Capillaries

D. Venules

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4

Which cell organelle contains digestive enzymes and is involved in cellular waste disposal?

A. Mitochondria

B. Nucleus

C. Lysosome

D. Chloroplast

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4

The human heart has how many chambers?

A. 2

B. 3

C. 4

D. 5

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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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4

A human male has how many sex chromosomes?

A. 1

B. 2

C. 23

D. 46

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Which process involves the copying of DNA into a complementary RNA molecule?

A. Transcription

B. Translation

C. Replication

D. Mutation

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4

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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In humans, which hormone is responsible for the development of secondary sexual characteristics in males?

A. Estrogen

B. Progesterone

C. Testosterone

D. Prolactin

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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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4

Which part of a plant is responsible for producing seeds?

A. Stem

B. Leaf

C. Flower

D. Root

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4

Which organelle is responsible for protein synthesis?

A. Golgi apparatus

B. Ribosome

C. Endoplasmic reticulum

D. Lysosome

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What is the role of the hypothalamus in the human brain?

A. Coordination of muscle movements

B. Regulation of body temperature and hormone secretion

C. Memory storage

D. Visual processing

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4

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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Which of Mendel's laws states that alleles for different genes segregate independently during gamete formation?

A. Law of Dominance

B. Law of Independent Assortment

C. Law of Segregation

D. Law of Inheritance

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4

Which of the following is NOT part of the human digestive system?

A. Stomach

B. Liver

C. Kidney

D. Small intestine

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The relationship between a bee and a flower, where the bee obtains nectar and pollen while aiding in pollination, is an example of:

A. Mutualism

B. Parasitism

C. Competition

D. Commensalism

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Which type of survivorship curve is characterized by a high mortality rate in early life, followed by high survivorship in later life?

A. Type I

B. Type II

C. Type III

D. Type IV

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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

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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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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Which species is believed to be the closest ancestor to modern humans?

A. Neanderthals

B. Homo erectus

C. Australopithecus afarensis

D. Homo habilis

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What is the process by which species evolve into more diverse forms over time?

A. Speciation

B. Convergent evolution

C. Divergent evolution

D. Coevolution

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4

In which type of plant tissue does most of the photosynthesis occur?

A. Xylem

B. Phloem

C. Epidermis

D. Mesophyll

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4

What is the term for the physical appearance of an organism based on its genetic makeup?

A. Genotype

B. Phenotype

C. Allele

D. Homozygote

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4

What is the name of the enzyme in saliva that begins the digestion of starches?

A. Pepsin

B. Amylase

C. Trypsin

D. Lipase

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4

Which part of the human brain is responsible for regulating basic bodily functions like breathing and heart rate?

A. Cerebrum

B. Cerebellum

C. Medulla oblongata

D. Thalamus

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

A. Neuron

B. Nerve

C. Ganglion

D. Brain