Let’s go step by step to answer each part of the question.
---
2a – Three things plants need for photosynthesis and where they get them from:
Photosynthesis needs:
1.
Sunlight → comes from the
sun (arrow pointing from sun to leaf)
2.
Carbon dioxide → comes from the
air (arrow pointing to leaf from side — air surrounds the plant)
3.
Water → comes from the
soil (arrow pointing up from roots — roots absorb water from soil)
So, fill in the blanks like this:
- Arrow from sun → “sunlight” from the “sun”
- Arrow from side to leaf → “carbon dioxide” from the “air”
- Arrow from roots upward → “water” from the “soil”
*(Each blank is worth 1 mark — total 6 marks: 3 things + 3 sources)*
---
b – Two things plants produce as a result of photosynthesis:
Plants make:
1.
Glucose (food/sugar for energy)
2.
Oxygen (released into the air)
Answer: Glucose and oxygen
---
c – Where does photosynthesis take place?
It happens mainly in the
leaves, inside special cells called chloroplasts. But since the question asks “where”, the simple answer is:
in the leaves
---
d – Name of the green pigment in leaf cells:
That’s
chlorophyll
---
e – What is this green pigment for?
Chlorophyll absorbs sunlight so the plant can use that energy to make food during photosynthesis.
Answer: To absorb sunlight for photosynthesis
---
f – Function of specialized plant cells:
i.
Palisade cells → These are packed with chloroplasts and are found near the top of the leaf. Their job is to
do most of the photosynthesis because they catch lots of light.
ii.
Root hair cells → These tiny hairs on roots increase surface area to
absorb more water and minerals from the soil.
---
Now let’s write the final answers clearly.
Final Answer:
2a:
- Sunlight from the sun
- Carbon dioxide from the air
- Water from the soil
b: Glucose and oxygen
c: In the leaves
d: Chlorophyll
e: To absorb sunlight for photosynthesis
f i: To carry out photosynthesis (or make food using sunlight)
f ii: To absorb water and minerals from the soil
Parent Tip: Review the logic above to help your child master the concept of 8th grade science worksheet plants.
