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CBSE - XII Science - Biology - Organisms and Populations

What is brackish water and lagoon?

Asked by ashutosh25807 17th January 2018, 11:30 AM
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CBSE - XII Science - Biology - Organisms and Populations

What does per capita forest area means?

Asked by ashutosh25807 16th January 2018, 11:00 AM
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CBSE - XII Science - Biology - Organisms and Populations

the end produy of purine metrabolism in many mammals

Asked by madhu 15th February 2016, 12:55 PM
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CBSE - XII Science - Biology - Organisms and Populations

why there is no video for bio subject.how can i understand bio 

Asked by arshiya 16th November 2014, 9:24 PM
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CBSE - XII Science - Biology - Organisms and Populations

What is adaptation? Describe the adaptations of plants and animals in the desert.

Asked by Topperlearning User 16th June 2014, 4:14 PM
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CBSE - XII Science - Biology - Organisms and Populations

How do organisms which cannot migrate tend to overcome adverse environmental conditions? Explain taking one example each from vertebrates and angiosperms, respectively.

Asked by Topperlearning User 16th June 2014, 4:14 PM
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CBSE - XII Science - Biology - Organisms and Populations

How does the human body maintain constant temperature both in summers and winters? Explain.

Asked by Topperlearning User 16th June 2014, 4:14 PM
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CBSE - XII Science - Biology - Organisms and Populations

How do organisms cope with stressful external conditions which are localised or of short duration?

Asked by Topperlearning User 16th June 2014, 4:14 PM
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CBSE - XII Science - Biology - Organisms and Populations

What is aerenchyma? Mention any two specific functions of this tissue in hydrophytes. 

Asked by Topperlearning User 16th June 2014, 4:14 PM
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CBSE - XII Science - Biology - Organisms and Populations

Bear hibernates whereas some species of zooplankton enter diapause to avoid stressful external conditions. How are these two ways different from each other?  

Asked by Topperlearning User 16th June 2014, 4:14 PM
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CBSE - XII Science - Biology - Organisms and Populations

Explain why very small animals are rarely found in polar regions. 

Asked by Topperlearning User 16th June 2014, 4:14 PM
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CBSE - XII Science - Biology - Organisms and Populations

Describe habitat and ecological niche.

Asked by Topperlearning User 16th June 2014, 4:14 PM
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CBSE - XII Science - Biology - Organisms and Populations

Write adaptations of submerged, rooted hydrophytes.

Asked by Topperlearning User 16th June 2014, 4:14 PM
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CBSE - XII Science - Biology - Organisms and Populations

State one difference between biotic community and ecosystem.

Asked by Topperlearning User 16th June 2014, 4:14 PM
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CBSE - XII Science - Biology - Organisms and Populations

Write four characteristics of a biotic community. 

Asked by Topperlearning User 16th June 2014, 4:14 PM
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CBSE - XII Science - Biology - Organisms and Populations

Why are mammals the most successful animals on Earth? 

Asked by Topperlearning User 16th June 2014, 4:14 PM
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