This page contains quick notes and review questions for the following topics in Grade 6 Science – Second Quarter:
You can download printable (PDF) copies of the notes and the practice exam below.
Major functions of skeletal system:
Two divisions of the skeletal system:
Classification of bones:
Integumentary system consists of:
Functions of the integumentary system:
Parts of the skin:
Digestive system is composed of:
Circulatory system consists of:
Two parts of the circulation:
Peripheral nervous system
Three types of neurons:
Autonomic nervous system
Living things and non-living things interact with each other in an ecosystem.
In the forest ecosystem:
Layers of a rainforest:
Producers and consumers
Interactions between organisms in a tropical rainforest ecosystem:
Organisms that interact with each other in a coral reef ecosystem:
Factors that contribute to coral reef formation:
Categories of coral reefs:
Interactions between organisms in a coral reef ecosystem:
The mangrove swamp ecosystem consists of:
Interactions between organisms in a mangrove ecosystem:
Importance of the mangrove ecosystem:
1. How many bones does an adult human have?
2. The following are parts of the appendicular skeleton except _____.
3. Which of the following pairings is incorrect?
a. femur – long bone
b. pinkie finger – short bone
c. skull – flat bone
d. spinal column – irregular bone
4. The outermost layer of the skin is the _____.
5. Which of the following is NOT a function of the integumentary system?
a. defense against pathogens
b. elimination of waste products
c. regulation of body temperature
d. none – all are correct
6. Digestion begins in the _____.
d. small intestine
7. The rhythmic, wave-like movement of the digestive tract is called _____.
b. harmonic propulsion
8. Final digestion and food absorption take place in the _____.
b. small intestine
c. large intestine
9. The part of the respiratory system that is also known as the windpipe is the _____.
10. The _____ are grape-like air sacs in the lungs where the exchange of oxygen and carbon dioxide takes place.
11. The liquid part of the blood is called the _____.
a. blood corpuscles
12. Leukocytes are also known as _____.
a. red blood cells
b. white blood cells
13. The blood vessels that carry deoxygenated blood back to the heart are the _____.
d. none of the above
14. How many chambers does the human heart have?
15. The system that controls and coordinates the activities of the body is the _____.
a. circulatory system
b. endocrine system
c. excretory system
d. nervous system
16. The following are parts of the brain except _____.
a. brain cord
b. brain stem
17. Which part of the nerve cell receives signals and passes them on to the main part of the cell?
d. cell bodies
18. Which statement is correct?
a. Sensory neurons carry messages from the brain to the effector organs.
b. Motor neurons carry messages from receptor organs to the brain.
c. Interneurons connect sensory and motor neurons in the peripheral nervous system.
d. None – all are incorrect
19. The division of the autonomic nervous system that produces opposing effects to the sympathetic nervous system is the _____.
a. parasympathetic nervous system
b. peripheral nervous system
c. somatic nervous system
d. unsympathetic nervous system
20. The following vertebrates are cold-blooded except _____.
21. Crocodiles are _____.
c. flightless birds
22. Which vertebrate – body covering pairing is incorrect?
a. amphibians – moist, scaly skin
b. fish – scales
c. mammals – hair or fur
d. reptiles – dry, scaly skin
23. Sponges belong to which group of invertebrates?
24. Sea stars, sea urchins, and sea cucumbers are _____.
25. Which pairing is incorrect?
a. Crabs – arthropods
b. Snails – mollusks
c. Tapeworms – nematodes
d. None – all are correct
26. The topmost layer of the rainforest is the _____.
d. forest floor
27. Pollinators such as bees drink nectar from flowers and, as they move around, carry pollen from the male part of the flower to the female part of the same or another flower. This is an example of which type of relationship?
28. The following are types of coral reef formations except _____.
b. barrier reefs
c. bleaching reefs
d. fringing reefs
29. Mudskippers are most likely found in which habitat?
a. coral reefs
b. mangrove swamps
c. tropical rainforests
30. Which is NOT a reason why mangrove swamps are important?
a. They serve as breeding and nesting grounds for many animal species.
b. They serve as natural barriers, protecting the coastline from flooding and erosion.
c. They are an important source of livelihood for people living in coastal areas.
d. None – all are correct