Q. No.Which of the following would necessarily decrease the density of a population in a given habitat?
1.
Natality> mortality
2.
Immigration >emigration
3.
Mortality and emigration
4.
Natality and immigration
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
A protozoan reproduces by binary fission. What will be the number of protozoans in its population after six generations?
| 1. | 128 | 2. | 24 |
| 3. | 64 | 4. | 32 |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
In 2005, for each of the 14 million people present in a country, 0.028 were born and 0.008 died during the year. Using the exponential equation, the number of people present in 2015 is predicted as:
| 1. | 25 million | 2. | 17 million |
| 3. | 20 million | 4. | 18 million |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Which one of the following organisms reproduces sexually only once in its lifetime?
| 1. | Banana | 2. | Mango |
| 3. | Tomato | 4. | Eucalyptus |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
What parameters are used for the tiger census in our country’s national parks and sanctuaries?
| 1. | Pug marks only | 2. | Pugmarks and fecal pellets |
| 3. | Faecal pellets only | 4. | Actual headcounts |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
What will happen to a well-growing herbaceous plant in the forest if it is transplanted outside the forest in a park?
| 1. | It will grow normally |
| 2. | It will grow well because it is planted in the same locality |
| 3. | It may not survive because of changes in its microclimate |
| 4. | It grows very well because the plant gets more sunlight |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Salt concentration (Salinity) of the sea measured in parts per thousand is:
1. 10-15
2. 30-70
3. 0-5
4. 30-35
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Biosphere is:
| 1. | A component in the ecosystem |
| 2. | Composed of the plants present in the soil |
| 3. | Life in the outer space |
| 4. | Composed of all living organisms present on earth which interact with the physical environment |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Autecology is the:
| 1. | Relation of heterogeneous populations to their environment |
| 2. | Relation of an individual to its environment |
| 3. | Relation of a community to its environment |
| 4. | Relation of a biome to its environment |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Match plants in Column I with their Ecological adaptations in Column II and select the correct answer from the codes given:
|
|
Plants |
|
Ecological adaptation |
|
A. |
Mangroves |
P. |
High-temperature optima for photosynthesis |
|
B. |
Heliophytes |
Q. |
Deep root systems |
|
C. |
Water hyacinth |
R. |
Viviparity |
|
D. |
Prosopis |
S. |
Inflated petiole |
Codes:
| A | B | C | D | |
| 1. | R | P | S | Q |
| 2. | S | P | R | Q |
| 3. | R | P | Q | S |
| 4. | P | Q | R | S |
© 2024 GoodEd Technologies Pvt. Ltd.