Class 12 Biology

Narender

Asked: October 18, 2021In: Class 12 Biology

How can you, as an individual, prevent the loss of biodiversity?

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Parul

Asked: October 15, 2021In: Class 12 Biology

Elaborate how invasion by an alien species reduces the species diversity of an area.

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Somansh

Asked: October 15, 2021In: Class 12 Biology

Name the five key tools for accomplishing the tasks of recombinant DNA technology. Also mention the functions of each tool.

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Sushant Joshi

Asked: October 15, 2021In: Class 12 Biology

Describe critically the main ideas behind the biological control of pests and diseases.

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Parul

Asked: October 15, 2021In: Class 12 Biology

In an aquarium two herbivorous species of fish are living together and feeding on phytoplanktons. As per the Gausses principle, one of the species is to be eliminated in due course of time, but both are surviving. How? And what possibly happened to both the species?

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Sushant Joshi

Asked: October 15, 2021In: Class 12 Biology

Describe the role of Agrobacterium tumefaciens in transforming a plant cell.

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Uma Bhagel

Asked: October 15, 2021In: Class 12 Biology

Enumerate and describe any five reasons for introducing sex-education to school-going children.

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Shilpi

Asked: October 15, 2021In: Class 12 Biology

Meiotic division during oogenesis is different from that in spermatogenesis. Explain how and why?

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Divya datt

Asked: October 15, 2021In: Class 12 Biology

Embryo sacs of some apomictic species appear normal but contain diploid cells. Suggest a suitable explanation for the condition.

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Vijay Raj

Asked: October 15, 2021In: Class 12 Biology

Although sexual reproduction is a long drawn, energy-intensive complex form of reproduction, many groups of organisms in Kingdom Animalia and Plantae prefer this mode of reproduction. Give atleast three reasons for this.

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Category: Class 12 Biology

How can you, as an individual, prevent the loss of biodiversity?

Elaborate how invasion by an alien species reduces the species diversity of an area.

Name the five key tools for accomplishing the tasks of recombinant DNA technology. Also mention the functions of each tool.

Describe critically the main ideas behind the biological control of pests and diseases.

In an aquarium two herbivorous species of fish are living together and feeding on phytoplanktons. As per the Gausses principle, one of the species is to be eliminated in due course of time, but both are surviving. How? And what possibly happened to both the species?

Describe the role of Agrobacterium tumefaciens in transforming a plant cell.

Enumerate and describe any five reasons for introducing sex-education to school-going children.

Meiotic division during oogenesis is different from that in spermatogenesis. Explain how and why?

Embryo sacs of some apomictic species appear normal but contain diploid cells. Suggest a suitable explanation for the condition.

Although sexual reproduction is a long drawn, energy-intensive complex form of reproduction, many groups of organisms in Kingdom Animalia and Plantae prefer this mode of reproduction. Give atleast three reasons for this.

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Category: Class 12 Biology

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