Recent questions tagged organisms and population

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

1 answer

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

asked Apr 23, 2019 by priyanka.clay6

1 answer

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

1 answer

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

asked Apr 23, 2019 by priyanka.clay6

1 answer

Give examples of adaptation to desert condition shown by organisms.

asked Apr 23, 2019 by priyanka.clay6

1 answer

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

asked Apr 23, 2019 by priyanka.clay6

1 answer

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

asked Apr 23, 2019 by priyanka.clay6

1 answer

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

1 answer

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

asked Apr 23, 2019 by priyanka.clay6

1 answer

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

asked Apr 23, 2019 by priyanka.clay6

1 answer

Give three example of mutualistic relationship.

asked Apr 23, 2019 by priyanka.clay6

1 answer

What are the roles of predators?

asked Apr 23, 2019 by priyanka.clay6

1 answer

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

1 answer

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

asked Apr 23, 2019 by priyanka.clay6

1 answer

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

1 answer

How does Ophrys get pollinated by bees?

asked Apr 23, 2019 by priyanka.clay6

1 answer

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

asked Apr 23, 2019 by priyanka.clay6

1 answer

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

1 answer

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

1 answer

What do you mean by competitive release?

asked Apr 23, 2019 by priyanka.clay6

1 answer

What adaptation have parasites evolved?

asked Apr 23, 2019 by priyanka.clay6

1 answer

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

asked Apr 23, 2019 by priyanka.clay6

1 answer

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

asked Apr 23, 2019 by priyanka.clay6

1 answer

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

asked Apr 23, 2019 by priyanka.clay6

1 answer

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

asked Apr 23, 2019 by priyanka.clay6

1 answer

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

asked Apr 23, 2019 by priyanka.clay6

1 answer

How have plants developed defence against predators ?

asked Apr 23, 2019 by priyanka.clay6

1 answer

How have prey reduced impact of predation ?

asked Apr 23, 2019 by priyanka.clay6

1 answer

What is Gause Competitive Exclusion Principle?

asked Apr 23, 2019 by priyanka.clay6

1 answer

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

1 answer

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

asked Apr 23, 2019 by priyanka.clay6

1 answer

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

asked Apr 23, 2019 by priyanka.clay6

1 answer

Differentiate between stenohaline and euryhaline organisms.

asked Apr 23, 2019 by priyanka.clay6

1 answer

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

1 answer

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

1 answer

"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

1 answer

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

1 answer

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

1 answer

What type of growth status the following pyramid represents ?

asked Apr 23, 2019 by priyanka.clay6

1 answer

Kangaroo rats can survive in the absence of an external source of water. How do they adapt themselves to such conditions?

asked Apr 19, 2019 by priyanka.clay6

1 answer

a) Which type of growth curve does it represent? b) What do the notations represent in the given equation? $\frac{dN}{dt} = rN [\frac{K-N}{K}]$

asked Apr 19, 2019 by priyanka.clay6

1 answer

How is competition avoided in nature?

asked Apr 19, 2019 by priyanka.clay6

1 answer

Gause's competitive exclusion principle, where does this apply?

asked Apr 19, 2019 by priyanka.clay6

1 answer

How is liver fluke adapted to parasitism ?

asked Apr 19, 2019 by priyanka.clay6

1 answer

What is brood parasitism?

asked Apr 19, 2019 by priyanka.clay6

1 answer

Why is female mosquito not considered a parasite?

asked Apr 19, 2019 by priyanka.clay6

1 answer

What is the relationship between egret and grazing cattle? Why?

asked Apr 19, 2019 by priyanka.clay6

1 answer

How is orchid ophrys pollinated ?

asked Apr 19, 2019 by priyanka.clay6

1 answer

Will the distribution level of species be affected by gradual increase in temperature? Say briefly.

asked Apr 19, 2019 by priyanka.clay6

1 answer

Predators are prudent. Why?

asked Apr 19, 2019 by priyanka.clay6

1 answer

Ask Questions, Get Answers