EASY
Lower Secondary Stage 8
IMPORTANT
Earn 100
Explain how palisade cells in a leaf are adapted for photosynthesis. Mention the name of a green substance that is present in palisade cells.
Important Questions on Obtaining Food
EASY
Lower Secondary Stage 8
IMPORTANT
In which parts of the cell is the green substance responsible for the photosynthesis is found?
EASY
Lower Secondary Stage 8
IMPORTANT
Describe the function of the green color pigment in the process of photosynthesis.
EASY
Lower Secondary Stage 8
IMPORTANT
Food moves from your oesophagus to your large intestine. Which two organs does food pass through on this journey?
EASY
Lower Secondary Stage 8
IMPORTANT
Explain why the food in your large intestine is mainly fibre.
EASY
Lower Secondary Stage 8
IMPORTANT
What is the function of your large intestine?
EASY
Lower Secondary Stage 8
IMPORTANT
Where in your alimentary canal is digested food absorbed into your blood?
EASY
Lower Secondary Stage 8
IMPORTANT
Scientists use chemical tests to find out about the substances in things. The above figure shows the test for a nutrient on an unripe banana.
(a) Name the liquid that is being added to the banana.
(b) Describe the color change as the liquid touches the banana.
(c) What does this color change tell you about the banana?
EASY
Lower Secondary Stage 8
IMPORTANT
Some tests are shown in the table. Complete the table.
| Test | What substance is being tested for? | Positive result | Negative result |
| Add Biuret solution to food | Solution to purple | Solution stays blue | |
| Rub food on a piece of paper | No greasy mark on paper | ||
| Place a glowing splint in a gas | Splint relights | ||
| Add lime water to a gas | Lime water stays clear |
