Match List-I with List-II. [2021]
| List - I | List - II | ||
| (p) | Allen’s Rule | (i) | Kangaroo rat |
| (q) | Physiological adaptation | (ii) | Desert lizard |
| (r) | Behavioural adaptation | (iii) | Marine fish at depth |
| (s) | Biochemical adaptation | (iv) | Polar seal |
Choose the correct answer from the options given below:
p - (iv), q - (iii), r - (ii), s - (i)
p - (iv), q - (ii), r - (iii), s - (i)
p - (iv), q - (i), r - (iii), s - (ii)
p - (iv), q - (i), r - (ii), s - (iii)
Assertion (A): A person goes to high altitude and experiences ‘altitude sickness’ with symptoms like breathing difficulty and heart palpitations.
Reason (R): Due to low atmospheric pressure at high altitude, the body does not get sufficient oxygen.
In the light of the above statements, choose the correct answer from the options given below. [2021]
(A) is false but (R) is true.
Both (A) and (R) are true and (R) is the correct explanation of (A).
Both (A) and (R) are true but (R) is not the correct explanation of (A).
(A) is true but (R) is false.
(2)
A person going to high altitude experiences ‘altitude sickness’ with symptoms like breathing difficulty and heart palpitations because of low atmospheric pressure at high altitude, due to which body does not get enough oxygen.
Niche is [2018]
all the biological factors in the organism’s environment
the physical space where an organism lives
the range of temperature that the organism needs to live
the functional role played by the organism where it lives
(4)
Niche is specific part of habitat occupied by individuals of a species which is circumscribed by its range of tolerance, range of movement, microclimate, etc. Hence, niche refers to the functional role played by the organism where it lives.
Pneumatophores occur in [2018]
halophytes
free-floating hydrophytes
carnivorous plants
submerged hydrophytes
(1)
Pneumatophores are breathing or respiratory roots which are found in plants growing in mangroves or water logged soil or saline swamps. Such plants are called halophytes.
Plants which produce characteristic pneumatophores and show vivipary belong to [2017]
halophytes
psammophytes
hydrophytes
mesophytes
(1)
Presence of pneumatophores, i.e., small negatively geotropic vertical roots and vivipary or seed germination while attached to plant are adaptations of halophytes, i.e., plants growing in saline habitat.
Presence of plants arranged into well-defined vertical layers depending on their height can be seen best in [2017]
tropical rainforest
grassland
temperate forest
tropical savannah
It is much easier for a small animal to run uphill than for a large animal, because [2016]
small animals have a lower requirement
the efficiency of muscles in large animals is less than in the small animals
it is easier to carry a small body weight
smaller animals have a higher metabolic rate
(4)
The small animals have smaller surface area to body volume ratio. They have higher metabolic rates than larger animals. Therefore, it is much easier for small animals to move uphill than large animals.
An association of individuals of different species living in the same habitat and having functional interactions is [2015]
ecosystem
population
ecological niche
biotic community
(4)
Biological or biotic community is an assemblage of populations of different species of plants, animals, bacteria and fungi which live in a particular area and interact with one another through competition, predation, mutualism, etc. Each biotic community has a specific composition and structure, e.g., pond community.
Most animals are tree dwellers in a [2015]
temperate deciduous forest
tropical rainforest
coniferous forest
thorn woodland
(2)
Tropical rainforests have a very dense plant cover. They also experience a large amount of precipitation, thus the forest floor is always damp. Thus, the conditions there have led animals to get adapted to arboreal habitats. Most animals found there are tree dwellers as almost every space on the forest floor is occupied by the vegetation.
Just as a person moving from Delhi to Shimla to escape the heat for the duration of hot summer, thousands of migratory birds from Siberia and other extremely cold northern regions move to [2014]
Western Ghat
Meghalaya
Corbett National Park
Keoladeo National Park
