Plants and photosynthesis
The process that uses energy from the sun to make food from water and carbon dioxide
Photosynthesis
Water in the form of gas
Water vapour
State all the stages of the plant life cycle.
Seed, Young plant, adult plant
State all male parts of a flower.
Anther and Filament
State 3 effects of forces.
Start moving a stationary object
Stop a moving object
Change shape/direction
Speed up/Slow down an object
Where does photosynthesis take place inside the leaves?
Chloroplast
A layer of water appears on the outside of a cup of ice water soon after it was poured. What part of the water cycle is this?
Condensation
State a similarity between the mosquito and cockroach life cycle.
They both start with a egg stage.
What do these develop into:
Ovary -> ?
Ovule -> ?
Ovary -> Fruit
Ovule -> Seed
An example of camouflage is...
1. a frog's sticky tongue
2. a snake that blends in with it's environment
3. a lion's sharp claws
4. flat teeth on a horse
2. a snake that blends in with it's environment
Photosynthesis uses light energy, carbon dioxide, and ______ to produce oxygen and sugar.
water
Explain how water changes from a liquid to a solid.
- Temperature
- Gain/lose heat
At 0 degrees celcius, the liquid (water) loses heat to its surroundings and changes state into a solid (ice).
State one animal and one insect that has a 3 stage life cycle.
Animal: Human, frog, chicken
Insect: Cockroach, Grasshopper
What is fertilisation?
Fusion of the male and female reproductive cells.
Name 2 non-contact forces.
Gravitational Force, Magnetic Force
State the 2 functions of the roots.
1. Take in water and minerals from the ground
2. Hold the plant firmly to the ground
An ice cube placed on the sunlight melts quickly.
Explain how this happens
The ice cube will gain heat from the sun and change state from solid to liquid
State one difference between the young and adult stages of the frog
The young frog has a tail/no legs but the adult frog has legs/no tail
How do insects like bees assist fertilization in a flowering plant?
They are pollinators that transport pollen grains from the anther to the stigma.
Complete the sentance:
As the ________________ force between the toy car and the ramp increases, the distance travelled by a toy car on the ramp __________________.
Complete the sentance:
As the frictional force between the toy car and the ramp increases, the distance travelled by a toy car on the ramp decreases.
Name 2 parts of the plant that are needed for photosynthesis to take place. State how they both function.
2. Chloroplast: Takes in sunlight for the plant
3. Roots: Take in water for the plant
Fill in the blanks.
Explain the water cycle.
1. Water in lakes/oceans gains heat from the Sun
2. Water _________into ___________ _____________and rises up the sky.
3. Once in contact with the cooler sky, the water vapour ________________into ___________ ___________
4. The water droplets gather as ___________
5. When the clouds get too heavy, it falls as ___________ back to Earth
1. Water in lakes/oceans gains heat from the Sun
2. Water evaporates into water vapour and rises up the sky
3. Once in contact with the cooler sky, the water vapour condenses into water droplets
4. The water droplets gather as clouds
5. When the clouds get too heavy, it falls as rain back to Earth
Why is continuing the life cycle important for living things?
Continuing the life cycle ensures the survival of its kind.
A flower is found with its anthers and stigma hanging outside the flower.
How are these flowers pollinated?
Wind-pollinated
An animal has the following adaptations:
Light coloured fur and layer of fat
Explain how these adaptations allow it to survive in temperatures that are extremely cold.
Light coloured fur: Blend in/camouflage in the ice
Layer of fat: Keep the animal warm