Find out false one:
(1) Mammals from colder climate generally have shorter ears and limbs to minimise heat loss
(2) All organisms have behavioural adaptations that allow them to respond quickly to a stressful situation
(3) Some organisms possess adaptations that are physiological which allow them to respond quickly to a stressful situation
(4) A large variety of invertebrates and fish live at great depths in the ocean where the pressure could be > 100 times than the normal atmospheric pressure
Which of the following statement is false with respect to adaptations?
(1) Many xerophytic plants have thick cuticle on leaf epidermis, sunken stomata
(2) Some xerophytic plants have special photosynthetic pathway (CAM) that enables their stomata close during day
(3) Opuntia has spines (modified leaves), photosynthetic phylloclade (stem)
(4) All adaptations are genetically fixed all organisms
The figure given below is a diagrammatic representation of response of organisms to abiotic factors. What do (i), (ii) and (iii) represent respectively?
(i) | (ii) | (iii) | |
(1) | Conformer | Regulator | Partial regulator |
(2) | Regulator | Partial | Conformer regulator |
(3) | Partial | Regulator | Conformer regulator |
(4) | Regulator | Conformer | Partial regulator |
Which of the following is best suited with the abiotic factor temperature, playing role in changes in the physicochemical environment of different habitats?
1. The average temperature of land is approximately 50 throughout the year
2. The temperature of temperate countries is very much favorable for mango trees
3. Temperature affects the kinetics of enzyme and hence the basal metabolic activity of the body
4. Both 1 and 2
Aquatic organisms face problems when water quality gets disturbed. Here water quality includes
1. Chemical composition, temperature, pH
2. Chemical composition and pH
3. Only pH
4. pH and temperature
The salt concentration of water bodies is measured in
1. Parts Per Thousands
2. Parts Per Million
3. Parts Per Billion
4. Parts per Hundreds
Light as an abiotic factor is important
1. For photosynthesis and flowering only
2. Foraging, reproductive and migratory activities of animals
3. A and B both
4. Only for autotrophs
Which statement among the following is wrong?
1. More than 500 m depth of the ocean doesn't get sunlight
2. The spectral quality of solar light is important.
3. All the color components of the visible spectrum are not available for marine plants.
4. The UV component of light is harmful to all the organisms
The percolation property of soil is controlled by which of the following parameters?
1. Composition and Aggregation
2. Composition and pH
3. Composition, Aggregation, and grain size
4. Grain size, topography, and pH
In aquatic habitats, the type of benthic animals is determined by
1. The grain size of soil at the bottom
2. Sediment characteristics
3. Percolating property of soil
4. topography of soil