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प्रश्न
Why is genetic variation important in the plant Rauwolfia vomitoria?
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उत्तर
Genetic variation affects the production of the drug principle reserpine in the medicinal plant Rauwolfia.
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संबंधित प्रश्न
The species diversity of plants (22 per cent) is much less than that of animals (72 per cent). What could be the explanations to how animals achieved greater diversification?
Enlist various types of species diversity.
Very Short Answer Type Question:
Name the habitat where various types of fish live.
Very Short Answer Type Question:
What is the function of gill?
Very Short Answer Type Question:
Name the animal which is called the ship of desert.
Name the locomotory organ of Amoeba.
What are the adaptations seen in different types of vertebrates?
True (or) False. If false write the correct answer.
Fishes are aquatic vertebrates.
True (or) False. If false write the correct answer.
Animal cells have cell wall.
True or False – If False give the correct answer
Animals are the greatest gift of nature
True or False – If False give the correct answer
Horse hair is used as bristles in small painting brushes.
_____ joints are immovable.
Cockroach moves with the help of its
Which of the following region has maximum biodiversity.
Assertion (A): A stable biosphere has to be conserved.
Reason (R): The loss of biodiversity affects land, water, air, etc.
Write a note on Biodiversity.
Give reason for the following.
Stable biosphere has to be conserved.
Give reason for the following.
The Primary cause of today’s loss of biodiversity.
Name the correct taxonomic hierarchy in the classification of the plant kingdom:
Which of the following respiratory pigment is present in the blood of cockroaches?
Which of the following countries has the highest biodiversity?
Which of the following groups exhibit more species diversity?
Match the following:
| 1. | Cartilaginous | a. | Mullets |
| 2. | Bony fishes | b. | Sharks |
| 3. | Pneumatic bones | c. | Reptiles |
| 4. | Three chambered heart | d. | Birds |
Which of the following group exhibit more species diversity?
What is the difference between endemic and exotic species?
Log S =log C = Z log A is the equation that depicts relation between______.
The table given below shows the Area, Y-intercept and regression coefficient of the continents namely, Africa and Europe. Study the table carefully and answer the questions that follow:
| Africa | Europe | |
| Area (A) | 62,000 km sq. | 65,000 km sq. |
| Y-intercept | (C) 10 | 20 |
| Regression coefficient (Z) |
1 | 1 |
- Calculate the species richness (S) of each continent.
- Which of these continents shows a higher biodiversity?
- State any two factors that cause an increase in biodiversity.
Samson and Dorothy surveyed two islands, ‘A’ and ‘B’. They recorded the relevant data in the following format in their research folder:
| Parameter | Island A | Island B | |
| (a) | Area (A) | 45 × 103 Km2 | 12 × 105 Km2 |
| (b) | Regression co-efficient (Z) | 1 | 1 |
| (c) | Y-intercept | 20 | 10 |
- Derive the species-richness for each island.
- Which island exhibits greater biodiversity? Support your answer with a reason.
