NEET Botany
Population Characters Density
Low Priority
Consistency: 15%
Weightage: 3 / 20 Yrs
High-Yield Trend
1
2020 1
2013 1
2009 Questions 3 MCQs
01
PYQ 2009
medium
botany ID: neet-200
A country with a high rate of population growth took measures to reduce it. The figure below shows age-sex pyramids of populations. A and B are twenty years apart. Select the correct interpretation about them:
Interpretations
| 1. | 'A' is more recent and shows a slight reduction in the growth rate |
| 2. | 'B' is an earlier pyramid and shows stabilised growth rate |
| 3. | 'B' is more recent showing that the population is very young |
| 4. | 'A' is the earlier pyramid and no change has occurred in the growth rate |
1
(1)
2
(2)
3
(3)
4
(4)
02
PYQ 2013
easy
botany ID: neet-201
A biologist studied the population of rats in a barn. He found that the average natality was 250, average mortality 240, immigration 20 and emigration 30. The net increase in population is:
| 1. | 15 | 2. | 05 |
| 3. | zero | 4. | 10 |
1
(1)
2
(2)
3
(3)
4
(4)
03
PYQ 2020
easy
botany ID: neet-202
The impact of immigration on population density is:
| 1. | Negative |
| 2. | Both positive and negative |
| 3. | Neutralized by natality |
| 4. | Positive |
1
(1)
2
(2)
3
(3)
4
(4)