Most Popular Questions & Answers For CBSE Class 12 Biology

Adarsh Udayan

Feb 7, 2015

Differentiate between aquaculture and pisciculture.

Aquaculture means Process of growing any aquatic animal. Pisciculture:It means process of growing particularly fishes

Answer (5)

Adithyan Sanal

May 2, 2015

What is apomixis? Bring out its significance on the commercial basis.

Sol:
Apomixis is a type of asexual reproduction which is genetically controlled. There is a development of embryos and seeds without meiosis taking place in the female to produce eggs and thereby prevnti...

Adithyan Sanal

May 6, 2015

Enumerate any six essentials of good, effective dairy farm management practices.

Sol:
Management practices are the practices followed by farmers in order to obtain better results from dairy farm.These may include land management, provision of clean food and water for the animals, che...

Answer (2)

Sanalkumar S

Apr 13, 2015

What are some of the ex-situ methods of conserving biodiversity?

Sol:
Exsitu conservation of biodiversity means protecting them in man-made surroundings.Ex-situ conservation of biodiversity Aquarium, Plant collections from stored seeds and plant breeding techniques. Z...

Ethesh

May 20, 2014

Why do we use ovaprim? In which season the fishes breed?

Ovaprim is a synthetic agent which contians synthetic pituitary hormones, and when injected, it induces spawning of carps in captivity. The crap fishes breed only in rivers in monsoon months. i.e., from J...

Ethesh

May 20, 2014

What is heterosis? What role has it played in crop productivity?

Offspring produced by crossing the parents with different characters. An offspring exhibits heterosis if its traits are enhanced as a result of mixing the genetic contributions of its parents.
Crosses be...

Ethesh

May 20, 2014

What is roughage?From where animals obtain it?

Roughage is a fibrous coarse material of low nutrition. Eg: Straw of cereals.
Animals obtain roughage from dry grass.

Ethesh

May 20, 2014

What determines good quality of eggs?

Main considerations to determine good quality of eggs are
1. Egg number
2. Egg size
3. Egg weight
4. Egg shape
5. Egg shape
6. Shell colour
7. Shell quality

Surya rao Sripathi

Jan 31, 2014

Role of animal husbandary on human welfare

Animal husbandry is the science of management of livestock. It is the art and science of domesticating, breeding and feeding animals, while controlling diseases, for commercial purposes. Livestock includes cows...

Adarsh Udayan

Feb 7, 2015

Differentiate between aquaculture and pisciculture.

Aquaculture means Process of growing any aquatic animal. Pisciculture:It means process of growing particularly fishes

Answer (5)

Adithyan Sanal

May 2, 2015

What is apomixis? Bring out its significance on the commercial basis.

Adithyan Sanal

May 6, 2015

Enumerate any six essentials of good, effective dairy farm management practices.

Answer (2)

Sanalkumar S

Apr 13, 2015

What are some of the ex-situ methods of conserving biodiversity?

Ethesh

May 20, 2014

Why do we use ovaprim? In which season the fishes breed?

Ethesh

May 20, 2014

What is heterosis? What role has it played in crop productivity?

Ethesh

May 20, 2014

What is roughage?From where animals obtain it?

Roughage is a fibrous coarse material of low nutrition. Eg: Straw of cereals.
Animals obtain roughage from dry grass.

Ethesh

May 20, 2014

What determines good quality of eggs?

Main considerations to determine good quality of eggs are
1. Egg number
2. Egg size
3. Egg weight
4. Egg shape
5. Egg shape
6. Shell colour
7. Shell quality

Surya rao Sripathi

Jan 31, 2014

Role of animal husbandary on human welfare