Science 8-Quarter 4

• What is the main function of the digestive system?

  Break the food down to be used for energy
• In what form of cell division results in production of gametes or sex cells?

  Meiosis
• How many daughter cells are produced after mitosis cell division

  2
• How do you call the individual's observable traits, such as height, eye color, and blood type?

  Phenotype
• Given the genotype Pp, what is its phenotype?

  Purple
• What is the first level of organization?

  Cell
• The scientific name of any organism consists of of its genus and species
• It occurs when species dies out in an ecosystem

  extinction
• Which of the following is/are human threats to biodiversity?

  Population Growth
• What is the original source of almost all the energy in the ecosystems? sunlight
• Which of the following describes the interconnected feeding relationships in an ecosystem?

  Food web
• Water changes from a liquid to a vapor during evaporation
• Which of the following substances must be chemically transformed before it can be used by plants?

  Carbon Dioxide
• Which of the following is a factor affecting Earth's Ozone layer?

  chlorofluorocarbons
• Which of the following is the most specific description for digestion?

  chemical/mechanical breakdown of food
• Which of the following events happen during interphase of cell cycle?

  DNA Replication
• Which among the following describes the law of segregation?

  It states that the two alleles for a trait segregate (separate) when gametes are formed
• Which series is in the correct order from specific to general?

  Species, genus, family, order
• Which among the organisms that uses energy to produce its own food supply from inorganic compounds?

  autotroph
• Which of the following statements about cycles of matter is true?

  Matter is moved between the physical environment and living
• Which action can have the greatest impact on reducing the the threat of global warming?

  planting a tree
• Which is an advantage of using crop rotation over using fertilizer to add nutrients to the soil


  Soil nutrients are renewed naturally
• The digestive system processes food into usable and unusable materials. The usable materials are sent to the body's cells as food. What happens to unusable materials?

  it goes into the large intestine to await disposal
• Mary decided to cut her hair for a new look this summer. After 3 months she noticed that her hair is starting to go back to its original length. What type of cell division happened to mary's hair?

  Mitosis
• Which of the following genotype is heterozygous yellow?

  Yy
• Which is the correct way of writing the scientific name of wolf?

  Canis lupus
• Which of the following is not a benefit of biodiversity

  deforestation
• Which of the following organism manufacture its own food and does not depend on other organisms for survival?

  banana
• A snake that eats a frog that has eaten an insect that fed on a plant is called

  a third-level consumer
• Marie left a glass of water on the sidewalk one summer morning. She came back after a few hours and noticed that the water became lesser. What process might have taken place?

  Evaporation
• If your saliva, a digestive juice, which moistens food so it moves more easily through your esophagus into your stomach, what process of digestion is this?

  ingestion
• 2 tall green pea plants were crossed of the offsprings are tall and one short. What could be the possible genotype of parent plants

  Pp x Pp
• Which of the following has most biodiversity?

  Rainforest
• A bird stalks, kills and then eats an insect. BAsed on its behavior, which ecological terms describe the bird?

  carnivore, consumer
• Digestion takes place in a tube-like canal called the alimentary canal, or the digestive. Which is the correct sequence as food travels through the gastrointestinal tract?

  mouth, esophagus, stomach, small intestine, large intestine, and rectum
• Purple (P) is dominant over white (p) for flower color. What will be the phenotype resulting from cross between a homozygous purple flower and a heterozygous purple flower?

  all purple
• What suggested ways could be done in order to prevent rapid growth of algea affecting our lakes.

  proper waste disposal