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प्रश्न
Given below is an experimental setup to demonstrate a particular tropic movement in germinating seeds. Study the diagram and answer the questions that follow:
- Label the parts 1 and 2.
- Name the tropic movement shown by part 1.
- Part 1 is affected by two stimuli. Name them. Which one of the two is stronger?
- What is thigmotropism? Give one example.
- What is meant by 'Positive' and 'Negative' tropic movements in plants?
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उत्तर
- The tropic movement shown in part 1 is Hydrotropism.
- Part 1 is affected by gravity and water(moisture); water is stronger.
- The growth movement of plant parts in response to a touch stimulus is called Thigmotropism. Example: Plants such as Sweet Peas, Cuscuta and vines have tendrils that coil around other plants or other available support in response to one-sided contact or touch.
- Directional movement of a plant part towards the stimulus is called positive tropic movement, and away from the stimulus is called negative tropic movement.
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संबंधित प्रश्न
If the rate of respiration becomes more than the rate of photosynthesis, plants will:
A plant is kept in a dark cupboard for 48 hours before conducting any experiment on photosynthesis in order to
Oxygen given out during photosynthesis comes from water. Explain this statement.
Complete the following food chain by writing the names of appropriate organisms in the blanks:
→ __________ → __________ → Hen → Man
Give technical term:
Name the tissue that transports manufactured starch from the leaves to all parts of the plant.
Column ‘II’ is a list of items related to ideas in Column ‘I’. Match the term in Column ‘II’ with the suitable idea given in Column ‘I’.
| Column I | Column II | ||
| (i) | Grana | (a) | Decomposers |
| (ii) | Autotrophs | (b) | Light reaction |
| (iii) | By-products of photosynthesis | (c) | Animals |
| (iv) | Photolysis | (d) | Oxygen |
| (v) | Bacteria and fungi | (e) | Stimulated by light |
| (vi) | Chloroplast | (f) | Power |
| (vii) | Oxygen and water | (g) | Raw material |
| (viii) | Sunlight | (h) | Machinery |
| (ix) | CO2 and water | (i) | End products |
| (x) | Glucose (sugar) | (j) | Workrooms |
| (xi) | Cells in the leaf | (k) | By-products. |
Choose the correct option.
The sequential order in electron transport from PSII to PSI of photosynthesis is ______.
The minerals like nitrogen, potassium, and phosphorus, which are required in substantial quantity by the plants are called ______.
Draw the structure of the stomata and label the parts.
Label the diagram with the raw materials and products of photosynthesis.
