Question

1) Which function is NOT a p Populations of organis B) Living things exhibit co C) Organisms take in energy unction is NOT a property of life? hs of organisms rarely change over time. Wings exhibit complex but ordered organization. ake in energy and use it to perform all of life's activities. Organisms reproduce their own kind. 2) What are the two main p A) speciation and evolution C) decomposition and nutrient recycling the two main processes upon which ecosystems depend? B) nutrient recycling and energy flow D) sunlight and photosynthesis 3) Which substance is NOT recycled but rather is lost from ecosystems? energy C) magnesium A) nitrogen D) carbon 4) Which structure can perform all the activities required for life? A) DNA molecules (B) cells C) organelles D) nuclei genes 5) What name is given to the functional compartments of a cell? A) genomes B) nuclei genee organelles 6) What is a gene? A) a type of cell B) an organelle that houses DNA C) a type of hormone D a unit of inheritance 7) Which concept was proposed by Darwin? A) energy flow B) ecosystem structure C) ocean warming D) natural selection 8) Which of these is required for natural selection to occur? A) inheritance B) unequal reproductive success D) all of the answers are correct C) individual variation C) competition 9) What process accounts for the different breeds of domesticated dogs? A) overproduction B) natural selection D artificial selection 10) A hypothesis is a(n) a proposed explanation for a set of observations B) puess made in order to determine what observations and explorations an C) observation made in order to determine a theory D) theory determined after data collection hat observations and explorations are necessary 11) How do hypotheses differ from theories? A) Theories are more comprehensive than hypotheses.

Answer 1

Brilliant!! Every selected option is right.

Answer 1. Population do change over a period of time means they show mutations.

Answer 2. Other two important components are decomposition and nutrient cycling but they are secondary to the chosen one.

Answer 3. According to ten percent law, only 10% of energy is used rest 90% is lost to the atmosphere.

Answer 4. As cell contains organelles and nucleus.

Answer 5. As each organelle performs specific function.

Answer 6. Gene was discovered by Johansenn.

Answer 7. Charles Darwin gave this theory of natural selection.

Answer 8. These are few postulates of natural selection, others are over production, struggle for existence.

Answer 9. Deliberately best variety of dogs are selected through this.

Answer 10. Hypothesis is proved through experimentation.