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What is explant ?

Posted by Abhay Singh 7 years, 9 months ago

CBSE > Class 12 > Biology

2 answers

Jaya Shanti 7 years, 9 months ago

To take living material from an animal or plant and place it in a culture medium.

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Shruthi Babu 7 years, 9 months ago

explant culture is a technique to organotypically culture cells from a piece or pieces of tissue or organ removed from a plant or animal. The term explant can be applied to samples obtained from any part of the organism.

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Why male honey bee has16chromo some ain comparison to female has32chrosomes give one reasons

Posted by Snehal Shukla 7 years, 9 months ago

CBSE > Class 12 > Biology

1 answers

Jaya Shanti 7 years, 9 months ago

Male honeybees are born from unfertilised eggs by the process known as parthenogenesis where as female honeybees are born from fertilised eggs. As unfertilised eggs carries only half number of chromosome as compared to fertilised eggs, therefore male honeybee has 16 chromosomes whereas female has 32 chromosomes.

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Write down vatrious research areas of biotechnology.

Posted by Aman Nehra 7 years, 9 months ago

CBSE > Class 12 > Biology

0 answers

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Write down various research areas of biotechology

Posted by Aman Nehra 7 years, 9 months ago

CBSE > Class 12 > Biology

0 answers

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Genetics disorder

Posted by Mdsalim Alam 7 years, 9 months ago

CBSE > Class 12 > Biology

2 answers

Mdsalim Alam 7 years, 9 months ago

This mutation can be due to an error in DNA replication or due to enviromental factors such as cigrete smoke and exposure to radiation which cause changes in the DNA sequence

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Mdsalim Alam 7 years, 9 months ago

A genetic disorder is an illness caused by changes in a persons DNA

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What is parthenogenesis and parthenocarpy

Posted by Abhay Singh 7 years, 9 months ago

CBSE > Class 12 > Biology

2 answers

Shajith Shajith 7 years, 9 months ago

Production of fruits from unfertilised ovules in plants.It does not contain seeds.This is known as parthenocarpy.

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Shajith Shajith 7 years, 9 months ago

Development of an ovum or egg in a complete individual without fertilisation is called parthenogenesis.

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What is botany

Posted by Jyoti Singh 7 years, 9 months ago

CBSE > Class 12 > Biology

1 answers

Arpit Saini 7 years, 9 months ago

The branch of biology that deals with the study of plants and trees

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What is the scientific name of the microbe used for fermenting malted cereals and fruit juices?

Posted by Shajith Shajith 7 years, 9 months ago

CBSE > Class 12 > Biology

2 answers

Shajith Shajith 7 years, 9 months ago

Thanks

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Milind Kardam 7 years, 9 months ago

Saccharomyces cerevisiae

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Why do we say that their is no natural death in single celled organisms?

Posted by Pooja Kumari 7 years, 9 months ago

CBSE > Class 12 > Biology

2 answers

Rani Rani 7 years, 9 months ago

Because parental body divide into daughter cell. So parental body lives daughter cells. Very simple organ system.

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Divyank Darshi 7 years, 9 months ago

Because they further divide to form daughter cells which are similar to them.

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What is Cornell field experiment

Posted by Shanti Kumar 7 years, 9 months ago

CBSE > Class 12 > Biology

0 answers

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How to make a child

Posted by Arthik S Menon 7 years, 9 months ago

CBSE > Class 12 > Biology

0 answers

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Mention any two environmental factors that affect pollen viability

Posted by Preeti Raj 7 years, 9 months ago

CBSE > Class 12 > Biology

1 answers

Gurjeet Tuteja 7 years, 9 months ago

temperature and humidity

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difference between parthenogenesis and partheno carpy

Posted by Akshay Jamwal 4 years, 6 months ago

CBSE > Class 12 > Biology

1 answers

Sia ? 4 years, 6 months ago

Parthenocarpy is the process which produces fruits from unfertilized ovules in plants. Unfertilized ovules develop into fruits prior to fertilization. These fruits do not contain seeds. Parthenogenesis is a type of reproduction commonly shown in organisms mainly by some invertebrates and lower plants.

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Difference between PEC and PEN

Posted by Priyanka Bisoi 7 years, 9 months ago

CBSE > Class 12 > Biology

1 answers

Divyank Darshi 7 years, 9 months ago

PEN undergoes successive free nuclear divisions and then formation of cell wall takes place,,,, this leads to formation of PEC

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Mention the role played by the various cells of the embryo sac

Posted by Surinder Pal Singh 7 years, 9 months ago

CBSE > Class 12 > Biology

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A baby boy age 2 years is admitted to play school and pass through a dental checkup . the dentiest observed that the boy had 20 teeth . which teeth were absent

Posted by Gauravi G 7 years, 9 months ago

CBSE > Class 12 > Biology

1 answers

Raj Thakur 7 years, 9 months ago

Premolars which are twelve in number in adults are absent small chidrens. Therefore they have 32-12=20 teeths only. That is Molars, Canines and Incisors.

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Is any neet aspirant is there???

Posted by Pawan Waraich 7 years, 9 months ago

CBSE > Class 12 > Biology

2 answers

Shristi Raj 7 years, 9 months ago

Ypp

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Pawan Waraich 7 years, 9 months ago

????

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What is difference between lithosere and xerosere?

Posted by Chinmay Sarode 7 years, 9 months ago

CBSE > Class 12 > Biology

1 answers

Sia ? 4 years, 6 months ago

Xerosere is a plant succession that occurs in extremely dry conditions such as sand dunes, sand deserts, rock deserts etc. It occurs where there is limited water availability. Lithosere is a plant succession that occurs on bare rocks.

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I am entering class 11......tell me.......AS A SIDE BOOK what boOKs should I prefer for class 11 in chemistry biology physics

Posted by Sahil Kumar 7 years, 9 months ago

CBSE > Class 12 > Biology