In aquatic habitats, the type of benthic animals is determined by

1. Grain size of soil at bottom
2. Sediment characteristics
3. Percolating property of soil
4. topography of soil

When we talk about constant internal environment of our body and of any other animal's body, we include

1. Optimal temperature
2. Osmotic concentration of body fluids
3. Environmental conditions affecting internal system of organisms
4. Both A and B

Plants are

1. Regulators
2. Conformers
3. Partial Regulators
4. Partial Conformers

Shrews and Humming Birds are not capable of regulating body temperature because

1. Thermoregulation is energetically expensive
2. Higher surface area to volume ratio
3. Both A and B
4. Thermoregulation is not a function of energy

Every……….Keolado National Park…… in Rajasthan hosts thousands of migratory birdscoming from …….

1. Summer, Udaypur, Himachal
2. Winter, Bharatpur, Siberia
3. Summer, Bharatpur, Madhya Pradesh
4. Winter, Jodhpur, Himachal

Bears going into hibernation is an example of

1. Escape in time
2. Escape in winter sleep
3. Diapause
4. Migration

Under unfavorable conditions……..in lakes and ponds are known to enter……… a stage of suspended development.

1. Zoospore, conform
2. Zoospore, diapause
3. Zooplankton, diapause
4. Zooplankton, conform

Migration is which kind of adaptation?

1. Physiological
2. Behavioural
3. Biochemical
4. Physical

Find the wrong match.

1. Kangaroo Rat: Internal Fat Oxidation
2. Opuntia: Morphological Adaptation
3. Fishes at ocean bottom: Anatomical Adaptation
4. Desert Lizards: Behavioural Adaptation

Calculate the birth rate of a population which has 20 individuals at time t, after one year 8 individuals were also counted along with those 20.

1. 0.3
2. 0.2
3. 0.4
4. 0.8