Organisms and P...

Refer the given flowchart.

Identify X and select the correct option.

Basic unit of ecological hierarchy is

The branch of science which studies the interaction among organisms and between organisms and physical environment is called as

In the given figure, identify the temperate forest and coniferous forest respectively from the markings A-F and select the correct option.

Different biomes are formed due to annua variations in _____  over the earth's surface.

Deserts, rainforests, tundra, etc. are examples of

The key elements that determine differences in environmental conditions of different habitats include

Temperature is considered as the most ecologically relevant environmental factor because it affects ______ of organisms.

Study the following statements and select the correct ones.
(i) Organisms capable to tolerate a wide range of temperature are called stenothermal organisms.
(ii) Thermal tolerance of different species determines their geographical distribution to a large extent.
(iii) Average temperature in tropical deserts in summer is < 50°C.
(iv) Thermal springs cannot sustain life due to very high average temperature i.e., > 100°C.

Which of the following options is correct?

Mangoes do not and cannot grow in temperate regions. The most important environmental factor responsible for it is

Water is the second most important factor influencing life of organisms because

Life is sutainable with water only because 

A place has very scanty rainfall, the dominant plants there may be

A freshwater organism cannot survive in a water body that has greater ______ then its original habitat.

Which of the following is not a part of an organism's physical environment?

Organisms that can tolerate a wide range of salt concentration are termed as

Many freshwater organisms cannot live for long in seawater because the surrounding water will be _____ to body cells and _____ may occur.

Which of the following statements is incorrect?

Which of the following algae are found  in deepest ocean waters?

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