A population has more young individuals compared to older individuals. What would be the status of the population after some years?

1. It will decline

2. It will stabilize

3. It will increase

4. It will first decline and then stabilize

Subtopic:  Age Pyramid |
 83%

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

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
Subtopic:  Population Attributes |
 88%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


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
Subtopic:  Population Characters: Density |
 89%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


advertisementadvertisement

A protozoan reproduces by binary fission. What will be the number of protozoans in its population after six generations?

1.1282.24
3.644.32

Subtopic:  Population: Exponential Growth Model |
 78%

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

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 million2.17 million
3.20 million4.18 million

Subtopic:  Population Characters: Density | Population Characters: Natality & Mortality |
 63%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Amensalism is an association between two species where:

1. One species is harmed and the other is benefitted

2. One species is harmed and the other is unaffected

3. One species is benefitted and the other is unaffected

4. Both species are harmed

Subtopic:  Population Interactions: Amensalism |
 88%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


advertisementadvertisement

Lichens are association of:

1. Bacteria and fungus 2. Alga and bacterium
3. Fungus and alga 4. Fungus and virus
Subtopic:  Population Interactions: Commensalism, Protocooperation & Mutualism |
 90%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Which of the following is a partial root parasite?

1. Sandalwood

2. Mistletoe

3. Orobanche

4. Ganoderma

Subtopic:  Population Interactions: Parasitism |
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

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
Subtopic:  Life History Variations |

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


advertisementadvertisement

If a population of 50 Paramoecium present in a pool increases to 150 after an hour, what would be the percent growth or birth rate per individual per hour?

1. 100 2. 200
3. 50 4. 150
Subtopic:  Population Characters: Density | Population: Exponential Growth Model |
 59%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.