Recent questions

An elevator descends into a mine shaft at the rate bof 5 meters per minute.

asked Apr 23, 2019 by aggarwal.guptakirti

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Define adaptation. What is the adaptation shown by - a, whales, b, kangaroo rat, c, polar bear. Why do cold regions have no small animals?

asked Apr 23, 2019 by priyanka.clay6

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What factors contribute to growth in population. In what way does logistic growth differ from exponential growth?

asked Apr 23, 2019 by priyanka.clay6

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Define population and population density. How is it estimated? What are the attributes that determine the population characteristics?

asked Apr 23, 2019 by priyanka.clay6

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Give examples of biochemical adaption and behavioural adaptations shown by organisms.

asked Apr 23, 2019 by priyanka.clay6

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Give examples of adaptation to desert condition shown by organisms.

asked Apr 23, 2019 by priyanka.clay6

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What is altitude sickness? How does the body overcome this?

asked Apr 23, 2019 by priyanka.clay6

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What alternatives do organisms take if stressful external conditions are localized ? Give examples.

asked Apr 23, 2019 by priyanka.clay6

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How does constancy in the internal environment help an organism? How do organisms achieve it with regard to temperature? Give example.

asked Apr 23, 2019 by priyanka.clay6

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What are the factors that lead to the variation in the conditions of the habitat?

asked Apr 23, 2019 by priyanka.clay6

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Name the major biomes and the factors by which they vary.

asked Apr 23, 2019 by priyanka.clay6

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Give three example of mutualistic relationship.

asked Apr 23, 2019 by priyanka.clay6

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What are the roles of predators?

asked Apr 23, 2019 by priyanka.clay6

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Species facing competition might evolve mechanism that promotes coexistence rather than exclusion. Justify this statement in light of Gause’s competitive exclusion principle, citing suitable examples.

asked Apr 23, 2019 by priyanka.clay6

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How will you measure population density in following cases ? <br> a) Fish in a lake <br> b) Tiger census in a national park <br> c) Single huge banyan tree with large canopy.

asked Apr 23, 2019 by priyanka.clay6

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Darwin showed that even a slow growing animal like elephant could reach enormous number in absence of checks. With the help of your understanding of growth models, explain when is this possible? Why is this notion unrealistic?

asked Apr 23, 2019 by priyanka.clay6

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How does Ophrys get pollinated by bees?

asked Apr 23, 2019 by priyanka.clay6

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√12-√68-48√2 solve using identities

asked Apr 23, 2019 by ishasonu123

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What is brood parasitism? Give an example. What adaptation has evolved in this phenomenon?

asked Apr 23, 2019 by priyanka.clay6

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Anand on a visit through an under the ocean aquarium found that many sea anemones are attached to hermit crab shells, sucker fisher attached to the ventral surface of sharks and clown fish living among the sea anemones. He wondered whether all these associations are of the same type; can you help him to arrive at the correct conclusion.

asked Apr 23, 2019 by priyanka.clay6

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Mr. Ram on a trip to Rohtang Pass suddenly experienced heart palpitations, nausea, fatigue etc on reaching the destination. Suggest the reasons for his sudden deterioration of health and also state whether his body will withstand this problem if he stays there for long and how?

asked Apr 23, 2019 by priyanka.clay6

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What do you mean by competitive release?

asked Apr 23, 2019 by priyanka.clay6

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What adaptation have parasites evolved?

asked Apr 23, 2019 by priyanka.clay6

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What characteristic of soil determine the vegetation? How are these different at different places ?

asked Apr 23, 2019 by priyanka.clay6

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Which is the deepest dwelling algae- red, green or brown, why?

asked Apr 23, 2019 by priyanka.clay6

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What is the importance of light for organisms? How do deep sea organisms get their energy ?

asked Apr 23, 2019 by priyanka.clay6

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How does temperature affect distribution of animals? Name two types based on their temperature tolerance.

asked Apr 23, 2019 by priyanka.clay6

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How are the four levels of biological organisations in ecology interrelated ?

asked Apr 23, 2019 by priyanka.clay6

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How have plants developed defence against predators ?

asked Apr 23, 2019 by priyanka.clay6

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How have prey reduced impact of predation ?

asked Apr 23, 2019 by priyanka.clay6

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What is Gause Competitive Exclusion Principle?

asked Apr 23, 2019 by priyanka.clay6

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At high altitudes places like Manali or Mansarover we suffer from altitudes sickness this is because in low atmospheric pressure, body does not get enough oxygen, but gradually the problem is over. How did our body solve this problem?

asked Apr 23, 2019 by priyanka.clay6

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List four features which enable the Xeric plants to survive in the desert conditions.

asked Apr 23, 2019 by priyanka.clay6

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Mention the attributes which a population has but not an individual organism.

asked Apr 23, 2019 by priyanka.clay6

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Differentiate between stenohaline and euryhaline organisms.

asked Apr 23, 2019 by priyanka.clay6

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Generally thermo regulation is energetically expensive for many organisms. So, many smaller animals are rarely found in extreme hot or cold climatic condition. Why? Write two specific reasons.

asked Apr 23, 2019 by priyanka.clay6

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1920's, in Australia, the prickly pear cactus caused havoc by spreading rapidly over millions of hectares of rangeland. How it was brought In the early under control. What term is used for such methods of controlling the prey?

asked Apr 23, 2019 by priyanka.clay6

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"Snow leopards are not found in Kerala forests and tuna fish are rarely found beyond tropical latitude in the ocean". Study the above two cases and states the possible reasons for the same.

asked Apr 23, 2019 by priyanka.clay6

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If a marine fish is placed in fresh water aquarium, will the fish be able to survive? Why?

asked Apr 23, 2019 by priyanka.clay6

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The number of electrons in an atom with atomic number 105 having (n + l) =

asked Apr 23, 2019 by diyamishra0108

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Study the graphical representation shown below and mention the conditions responsible for the curves 'a' and 'b' respectively.

asked Apr 23, 2019 by priyanka.clay6

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The complex numbers z1=1+2i, z2=4-2i and z3=1-6i form the vertices of ____

asked Apr 23, 2019 by charmitapradhan

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What type of growth status the following pyramid represents ?

asked Apr 23, 2019 by priyanka.clay6

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If the zeroes alpha and beta of a polynomial x^2-7x+k are such that

asked Apr 23, 2019 by solankivishruti

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One card drawn from well shuffled 52 cards if E is the event the card drawn

asked Apr 23, 2019 by tp5995224

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What is electric flux when charge is placed at the face of cube

asked Apr 23, 2019 by kanchanwadhwa1999

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A plane mirror and a convex mirror are at distances of 20cm and 25cm respec

asked Apr 23, 2019 by santoshsethi5747

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The acceleration of a particle is given by a = t3 – 3t2 + 5 m/s2 where th

asked Apr 23, 2019 by shivukumarh

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in aunit cell A,B,C,andD are present at corners,face centred and edge centr

asked Apr 23, 2019 by mekumarrandhir

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Water will be absorbed by root hair when

asked Apr 23, 2019 by thakorkomal970

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