Grade 4 Science Q2 Periodic Test

Grade 4 Science Q2 Periodic Test

• Question 1: Human movement is facilitated by bones.
• Question 2: The skeletal system's crucial function is providing structural support and enabling upright posture.
• Question 3: The femur is the longest and strongest bone in the human body.
• Question 4: Muscles support the body and enable lifting heavy objects.
• Question 5: The circulatory system delivers oxygen and nutrients to muscles during physical activity.
• Question 6: The respiratory system's primary function is exchanging oxygen and carbon dioxide in the lungs.
• Question 7: Deep breathing after exercise is a direct result of the respiratory system regulating body temperature.
• Question 8: The digestive system breaks down food into smaller molecules, leading to feelings of fullness.
• Question 9: The stomach and intestines work together by digesting food and absorbing nutrients and water.
• Question 10: The heart pumps blood to the body, and the lungs filter blood returned to the heart.
• Question 11: Plant root systems anchor the plant in the soil.
• Question 12: Stems in a plant's shoot system transport water and nutrients throughout the plant.
• Question 13: Leaves contribute to a plant's functions by capturing sunlight for photosynthesis.
• Question 14: Both root and shoot systems are essential for a plant because root systems absorb nutrients, and shoot systems carry out photosynthesis.
• Question 15: Well-developed root and shoot systems indicate a plant is thriving.
• Question 16: A habitat is the area where plants and animals reside and live ecologically.
• Question 17: Terrestrial habitats include forests, grasslands, and deserts.
• Question 18: Aquatic environments are home to animals with gills and fins.
• Question 19: Birds and insects primarily populate terrestrial and aerial habitats.
• Question 20: Wildlife habitats provide shelter and resources for survival.
• Question 21: Mangrove swamps are home to organisms including mussels, fish, corals, and certain insects.
• Question 22: Sea shores support creatures such as clams, crabs, and sea horses, but not birds.
• Question 23: Garden ecosystems can contain a range of plants and animals including trees, flowers, and rats.
• Question 24: Bees play an important role in garden ecosystems as pollinators.
• Question 25: Cutting down mangrove trees can result in habitat loss and impacts on local communities.
• Question 26: Metamorphosis describes an animal's physical development after birth or hatching.
• Question 27: Complete metamorphosis involves four stages, while incomplete metamorphosis has three.
• Question 28: A tadpole transforms into a froglet by losing gills and a tail.
• Question 29: Child development involves learning basic motor skills like walking and talking, as well as becoming increasingly independent.
• Question 30: Adolescence is a period of significant change with both physical and developmental changes.
• Question 31: Omnivores consume both plants and animals.
• Question 32: A lion is a carnivore.
• Question 33: Herbivores obtain food by consuming plants.
• Question 34: Omnivores have specific teeth for processing both plant and animal matter.
• Question 35: Omnivores contribute to ecosystem balance by regulating plant and animal populations.
• Question 36: A primary consumer is correctly referred to as a herbivore.
• Question 37: Bacteria are decomposers.
• Question 38: Decomposers break down dead organisms, returning nutrients to the environment.
• Question 39: Transferring energy throughout trophic levels is inefficient, but only around 10% of the energy is transferred to the next level.
• Question 40: Apex predators are fewer at the top of the food web because energy is lost as heat with each transfer between trophic levels.