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Organisms and Populations · Question 73

AIPMT 2006MCQEasy📈 Topic in 12% papers+4−1
1

Annual migration does not occur in the case of

  1. Arctic tern
  2. salmon
  3. Siberian crane
  4. salamander

Answer

(4) salamander

Solution

As per NCERT, many animals, particularly birds, undertake long-distance migration to more hospitable areas to escape stressful conditions; e.g. Siberian cranes migrate every winter to Keoladeo National Park (Bharatpur).

∵ Arctic tern makes the longest annual migration, and salmon migrate every year from the sea to rivers for spawning.

∵ Salamanders (amphibians) do not undertake annual migration.

Answer: (4)

AIPMT 2006

Keep practising — Organisms and Populations

2

The formula for exponential population growth is-

  1. dN/dt = rN
  2. dt/dN = rN
  3. rN/dN = dt
  4. dN/rN = dt
AIPMT 2006
3

Praying mantis is a good example of-

  1. Warning colouration
  2. Camouflage
  3. Mullerian mimicry
  4. Social insects
AIPMT 2006
4

Niche overlap indicates-

  1. Sharing of one or more resources between the two species
  2. Mutualism between two species
  3. Active cooperation between two species
  4. Two different parasites on the same host
AIPMT 2006
5

More than 70% of world's fresh water is contained in –

  1. Polar ice
  2. Greenland
  3. Antarctica
  4. Glaciers and Mountains
AIPMT 2005
6

At which latitude, heat gain through insolation approximately equals heat loss through terrestrial radiation -

  1. 40 North and South
  2. 42 12 North and South
  3. 66 North and South
  4. 22 12 North and South
AIPMT 2005
7

Animals have the innate ability to escape from predation. Examples for the same are given below. Select the incorrect example

  1. Poison fangs in snakes
  2. Enlargement of body size by swallowing air in puffer fish
  3. Colour change in chameleon
  4. Melanism in moths
AIPMT 2005
8

Which one of the following pairs is mismatched ?

  1. Tundra - permafrost
  2. Savanna - acacia trees
  3. Prairie - epiphytes
  4. Coniferous forest - evergreen trees
AIPMT 2005
9

Certain characteristic demographic features of developing countries are -

  1. High fertility, low or rapidly falling mortality rate, rapid population growth and a very young age distribution
  2. High mortality, high density, uneven population growth and a very old age distribution
  3. High fertility, high density, rapidly rising mortality rate and very young age distribution
  4. High infant mortality, low fertility, uneven population growth and a very young age distribution
AIPMT 2004
10

In which of the following pairs is the specific characteristic of a soil not correctly matched ?

  1. Chernozems – Richest soil in the world
  2. Laterite – Contains aluminium compound
  3. Terra rossa – Most suitable for roses
  4. Black soil – Rich in calcium carbonate
AIPMT 2004
11

In which one of the following habitats does the diurnal temperature of soil surface vary most ?

  1. Grassland
  2. Desert
  3. Shrub land
  4. Forest
AIPMT 2004

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