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प्रश्न
Why are some organisms called as eurythermals and some others as stenohaline?
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उत्तर
- Eurythermal: Organisms that can tolerate a wide range of temperature fluctuations.
Example: Zostera. - Stenothermal: Organisms that can tolerate only a small range of temperature variations.
Example: Mango.
संबंधित प्रश्न
Read the given statements and select the correct option.
- Loamy soil is best suited for plant growth as it contains a mixture of silt, sand, and clay.
- The process of humification is slow in the case of organic remains containing a large amount of lignin and cellulose.
- Capillary water is the only water available to plant roots as it is present inside the micropores.
- Leaves of shade plant have more total chlorophyll per reaction centre, low ratio of chl a and chl b are usually thinner leaves.
Read the given statements and select the correct option.
Statement A: Cattle do not graze on weeds of Calotropis.
Statement B: Calotropis have thorns and spines, as a defense against herbivores.
In soil water available for plants is
The plant of this group are adapted to live partly in water and partly above substratum and free from water
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The organic horizon is generally absent from agricultural soils because tilling, e.g., plowing, buries organic matter. Why is an organic horizon generally absent in desert soils?
Sandy soil is not suitable for cultivation. Explain why?
What is myrmecophily?
What is a seed ball?
Explain Raunkiaer classification in the world’s vegetation based on the temperature.
Explain different types of hydrophytes with examples.
What are the advantages of seed dispersal?
Describe the dispersal of fruit and seeds by animals.
Column I represent the size of the soil particles and Column II represents the type of soil components. Which of the following is the correct match for the Column I and Column IL
| Column - I | Column - II | ||
| I) | 0.2 to 2.00 mm | i) | Slit soil |
| II) | Less than 0.002 mm | ii) | Clayey soil |
| III) | 0.002 to 0.02 mm | iii) | Sandy soil |
| IV) | 0.002 to 0.2 mm | iv) | Loamy soil |
What is the soil profile? Explain the characters of different soil horizons.
