Organisms and P...

Water holding capacity of the soil depends upon

_____ biomes are abundant in regions of hot and wet climate, while _____ biomes are found in hot and dry climate.

Organisms that can maintain a constant internal temperature are called as

The given graph represents how three different living organisms (X, Y and Z) cope with the internal environmental conditions. Study the graph and select the correct option regarding X, Y and Z.

Many animals use the diurnal and seasonal variators in light intensity and photoperiod to time their 

When organisms change their location to escape from harsh environment, it is called as 

Read the following statements and select the incorrect ones.
(i) Homeostasis ensures constant osmotic concentration of cells.
(ii) The famous Keolado National Park (Bharatput) in Rajasthan hosts thousands of migratory birds coming from Siberia, in every winter.
(iii) 99% of animals and nearly all plants are regulators. 
(iv) The conformers are able to maintain their body temperature inspite of changes in ambient temperature.

Which of the following options exemplifies a behavioural means of homeostasis?

It can be said that some animals in their evolutionary development preferred to be conformers than regulators. Which of the following can be the best suited reason for it?

Organisms may avoid stressful conditions by suspending their activities for sometime. If they do it to avoid high temperature it is called____ and if they do it to avoid low temperature then it is called_____ .

Very small animals are rarely found in polar regions because

_____ is an attribute of the organism (morphological, physiological, behavioural) to survive and reproduce in its habitat.

Kangaroo and desert rat that live in conditions of water scarcity are capable of meeting all their water requirements by

Which of the following statements is incorrect?

Which of the following is an incorrect match?

Read the following statements about adaptations in desert plants and select the correct ones.
(i) They have a thick cuticle on their leaf surfaces.
(ii) They have stomata present in deep sunken pits.
(iii) They use CAM pathway for photosynthesis.
(iv) They have flattened stems and large sized leaves.
(v) Their stomata remain closed during the day.

An inhabitant of Varanasi goes to Rohtang and experiences nausea, fatigue and heart palpitations. It is because

Which of the following problems does the frequent deep sea diver organisms like whales may face?

A behavioural strategy of adaptation called echolocation is found in

If an organism's body pattern resembles its environment making it difficult to spot, it is called as