Page 87 - CT&AI_CLasa_7_Part_1
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Which line on the graph most likely represents 7. Four students made the following statements
Pot P? (Pattern Recognition) about transport in plants:
Student A: Food is prepared in the leaves and
(a) A downward sloping line
transported to all parts of the plant through
(b) A flat horizontal line the phloem.
Student B: Phloem transports food only in the
(c) A steadily rising line upward direction like xylem.
Student C: Food is mainly transported in the
(d) A zig-zag line
form of sugars such as glucose.
5. Annu performs the experiment to observe Student D: Water transport in plants becomes
water transport in plants, but cuts the plant faster in warm conditions due to increased
stems in the air instead of underwater before transpiration.
placing them in the tumblers. Which of the following is correct?
After 24 hours, she notices very little or no (Abstract Thinking)
red colour in the leaves of the twig placed (a) Only A and B are correct
in coloured water. What is the most likely
reason for this observation? (b) Only A, C and D are correct
(Algorithmic Thinking)
(c) Only B and C are correct
(a) The red ink is too light to be seen.
(d) All are correct
(b) Air bubbles entered the stem and 8. A student makes the following statements:
blocked water movement.
1. Oxygen is taken in during photosynthesis.
(c) Water does not move through 2. Xylem transports food only upward.
plant stems.
3. Stomata help in gas exchange.
(d) The plant twig does not absorb 4. Germinating seeds release carbon dioxide.
coloured water.
Which of the following is correct?
6. A student says, “Oxygen enters the leaf (Abstract Thinking)
through stomata during photosynthesis and (a) Only 1 and 3 are correct
carbon dioxide is released.” What is the
mistake? (Abstract Thinking) (b) Only 1 and 2 are correct
(a) Stomata do not allow gas (c) Only 3 and 4 are correct
exchange.
(d) All are correct
(b) The gases are reversed; carbon
dioxide enters and oxygen is 9. Observe the given diagram.
released. Guard
cells
(c) Oxygen is not involved in plants. X
H O
2
(d) Photosynthesis does not require
gases. O 2
Life Processes in Plants 85
