Year 7 Science – Living Systems: Body Systems 1
Practise naming body systems and their organs, plant parts, microscope magnification and the causes of extinction in Australia. 20 questions. 25 minutes.
Which list puts the levels of organisation in order from smallest to largest?
Which organ pumps blood around the body?
Which body system removes metabolic wastes such as urea from the blood?
Maya swallows a mouthful of water. Which tube does it travel down to reach her stomach?
Which part of the blood helps to fight infection?
A garden plant wilts when the soil is dry. Which part of the plant takes in water from the soil?
Which plant tubes carry sugars made in the leaves to other parts of the plant?
In a model of the lungs, a plastic bottle holds a balloon and has a rubber sheet stretched across the base. Pulling the sheet down makes the balloon fill with air. What does the rubber sheet represent?
A student looks at onion cells with a light microscope. Total magnification = eyepiece × objective. What is the total magnification?
| Lens | Magnification |
|---|---|
| Eyepiece | 10× |
| Objective | 40× |
A scientist reports that a species is extinct. What does this mean?
A grassland where bilbies lived was cleared for farms, and the bilby population fell. Which cause of species decline is this an example of?
Choose the word that completes the blank.
A group of similar cells that do the same job is called a 1.
Blank 1: organ · tissue · organ system
Choose the word that completes the blank.
Gas exchange happens in the tiny air sacs of the lungs called 1.
Blank 1: villi · bronchi · alveoli
Choose the word that completes each blank.
The 1 filter the blood to make urine, which is stored in the 2.
Blank 1: kidneys · lungs · ureters
Blank 2: urethra · bladder · stomach
Choose the word that completes each blank.
Blood leaves the heart in 1 and returns to the heart in 2.
Blank 1: veins · capillaries · arteries
Blank 2: veins · arteries · capillaries
Choose the word that completes each blank.
A student views onion cells with a 10× eyepiece and a 10× objective, so the total magnification is 1. After staining with iodine, the dark dot in each cell is the 2.
Blank 1: 20× · 100× · 1000×
Blank 2: nucleus · chloroplast · vacuole
Choose the word that completes the blank.
Feral cats are 1 predators of native Australian mammals.
Blank 1: endemic · extinct · introduced
Circle 1 word in the sentence below.
Click the organ where most digested nutrients are absorbed into the blood.
mouthoesophagusstomachsmall intestinelarge intestine
Circle 1 word in the sentence below.
Click the part of the plant where sugars are made.
rootsstemleavesflowers
Circle 2 words in the sentence below.
Cells release energy by cellular respiration. Click the two substances that the circulatory system delivers to cells for this.
glucoseureaoxygencarbon dioxide