Earth and Life Science

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What are the characteristics of life?

Nutrition, reproduction, excretion

Growth, movement, respiration

Sensitivity, all of the above (correct)

None of the above

When did life evolve from a common ancestor?

2.5 billion years ago

3.5 billion years ago (correct)

4.5 billion years ago

5.5 billion years ago

What is a key process in the evolution of multicellular organisms?

Binary fission

Fragmentation

Cell specialization and differentiation (correct)

Parthenogenesis

Which of the following is a characteristic of eukaryotic cells?

Membrane-enclosed organelles Signup and view all the answers

What is the function of the immune system?

Defend against pathogens Signup and view all the answers

Who proposed the theory of evolution by natural selection?

Darwin Signup and view all the answers

According to Thomas Malthus, what leads to competition in populations?

Both A and B Signup and view all the answers

What is gene flow?

Movement of genes from one population to another Signup and view all the answers

What does the bottleneck effect refer to?

Decrease in population due to environmental factors Signup and view all the answers

Who is known as the Father of Taxonomy?

Linnaeus Signup and view all the answers

What is the function of the digestive system?

Process foods and absorb nutrients Signup and view all the answers

How do systems collaborate in the body?

By influencing each other's functions Signup and view all the answers

What is the role of the circulatory system?

Transport oxygen, nutrients, and remove wastes Signup and view all the answers

What connects the respiratory and circulatory systems?

Blood vessels Signup and view all the answers

What does the endocrine system use for communication?

Hormones Signup and view all the answers

What is a mechanism of evolutionary change?

Genetic drift Signup and view all the answers

What does genetic drift refer to?

Change in the gene pool due to chance Signup and view all the answers

What are examples of abiotic factors in ecology?

Temperature, water, pH Signup and view all the answers

What is carrying capacity in ecology?

Maximum number of individuals an ecosystem can support Signup and view all the answers

How do organisms continuously interact with their environment?

As part of an ecosystem Signup and view all the answers

Who proposed the theory of use and disuse?

Lamarck Signup and view all the answers

What is the process that builds up or breaks down materials in metabolism?

Natural selection Signup and view all the answers

What does the bottleneck effect result from?

Environmental factors Signup and view all the answers

What is the primary function of chloroplasts in plants?

Photosynthesis Signup and view all the answers

Who proposed the theory of inheritance of acquired traits?