CBSE > Class 12 > Biology | CBSE Board | Homework Help

Ask questions which are clear, concise and easy to understand.

Ask Question

Why DNA is more stable than RNA

Posted by Ajit Singh 7 years, 7 months ago

2 answers

Shubham Kumar Maurya 7 years, 7 months ago

Because in dna from the carbon atom one oxygen is removed & so it is also called as deoxyribonucleicacid & so it not very much reactive and in rna oH group is present which is very reactive & it react very fastly and in rna variation is seen very fastly

0Thank You

Himashu Singh 7 years, 7 months ago

Due to presence of 2' - hydroxyl group in the pentos ring DNA is more stable than RNA as DNA is more susceptible to hydrolysis.

0Thank You

ANSWER

What is Artificial insemination?

Posted by Shajith Shajith 7 years, 7 months ago

CBSE > Class 12 > Biology

2 answers

Shajith Shajith 7 years, 7 months ago

Tnq saloni?

0Thank You

Saloni S 7 years, 7 months ago

In artificial insemination ,doctor insert the sperm in female uterus for the purpose of achieving pregnancy.

1Thank You

ANSWER

which characteristic property of bryophyllum is exploited by gardeners and farmers?

Posted by Jassi Kaur 7 years, 7 months ago

CBSE > Class 12 > Biology

1 answers

Pawan Kumar 7 years, 7 months ago

It can be sown in moist soil by using the buds growing at the notches of this leaf

0Thank You

ANSWER

What is epitome and paratome of antigen and antibody

Posted by Mir Zakira 7 years, 7 months ago

CBSE > Class 12 > Biology

1 answers

Mir Zakira 7 years, 7 months ago

It is actually epitope and paratope.Epitope refers to recognition site over the surface of antigen which are recognized by T and B lymphocytes while as paratope refers to region on surface of lymphocytes which function as receptors for epitopes.

2Thank You

ANSWER

DNA dependent DNA polymerase

Posted by Muskan Sharma 7 years, 7 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

Does meiosis never occur in organism that are haploid?

Posted by Saurabh Mishra 7 years, 7 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

In the oganism are collectively reesposible for how it reproduce

Posted by Uvashree Jaganthan 7 years, 7 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

What is Triple fussion

Posted by Divyanshu Raikwar 7 years, 7 months ago

CBSE > Class 12 > Biology

1 answers

Manjot Gill 7 years, 7 months ago

Fusion of three haploid nuclei is termed as triple fusion

1Thank You

ANSWER

function of each layer of mature anther

Posted by Simran Kaur 7 years, 7 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

Difference between Parthenogenesis and parthenocarply

Posted by Kalpana Kumari 7 years, 7 months ago

CBSE > Class 12 > Biology

1 answers

Dipanshu Bokade 7 years, 7 months ago

Parthenocarpy is the production of fruits from unfertilized ovules in plants. The fruits produced by parthenocarpy do not contain seeds. For example, seedless watermelon and oranges. Parthenogenesis is a type of reproduction in which the ovum develops into an individual without fertilization. This type of reproduction is normally seen in insects and some lizards.

0Thank You

ANSWER

Why dna is better than rna

Posted by Charu Gaur 7 years, 7 months ago

CBSE > Class 12 > Biology

1 answers

Tannya Pande 7 years, 7 months ago

Due to its deoxyribose sugar which contains one less oxygen containing hydroxyl group , DNA is more stable than RNA .

0Thank You

ANSWER

How ZIFT and GIFT different from IUT

Posted by Mohamad Faizan 7 years, 7 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

The alarming population growth is leading to scarity of basic requirment suggest with reason any two population control major other then contraception to address the situation

Posted by Supriya Pathak 7 years, 7 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

Stomata in grass leaves are

Posted by Praveen Sharma 7 years, 7 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

There r lots of things in bio......how to memorize all...not by heart but by logically

Posted by Chayan Dhar 7 years, 7 months ago

CBSE > Class 12 > Biology

1 answers

Rahul Singh Rathore 7 years, 7 months ago

through diagram

1Thank You

ANSWER

why oogenesis is called discontinuos process

Posted by Rhitika Rai 7 years, 7 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

32 celled stage of human embryo is

Posted by Raja Rishi 7 years, 7 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

What is the rate of this book

Posted by Nitesh Nitesh 7 years, 7 months ago

CBSE > Class 12 > Biology

1 answers

Amrinder Singh 7 years, 7 months ago

Ncert 170

1Thank You

ANSWER

Why do we reproduce?

Posted by Vinayak Kulkarni 7 years, 7 months ago

CBSE > Class 12 > Biology

1 answers

Shubham Sharma 7 years, 7 months ago

Simply for continuation of a species in nature

2Thank You

ANSWER

what is the function of leydig cells in testes

Posted by Rhitika Rai 7 years, 7 months ago

CBSE > Class 12 > Biology

1 answers

Swetha Swetha 7 years, 7 months ago

It synthesis and secrete androgen hormones especially testosterone for the process of spermatogenesis

1Thank You

ANSWER

What do the white kernel of a tender coconut represent?

Posted by Tripti Sidar 7 years, 7 months ago

CBSE > Class 12 > Biology

1 answers

Rohini Mandal 7 years, 7 months ago

It represents the cellular endosperm

1Thank You

ANSWER

How *** ratio is not same because 50-50% of chromosomes are found

Posted by Sahil Mishra 7 years, 7 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

T.S.H what is full form

Posted by Shivangi Mishra 7 years, 7 months ago

CBSE > Class 12 > Biology

2 answers

Tannya Pande 7 years, 7 months ago

Thyroid Stimulating Hormone

1Thank You

Shivangi Mishra 7 years, 7 months ago

T.S.H what is full form

1Thank You

ANSWER

Function of cremaster muscle??

Posted by Shivani Tank 7 years, 7 months ago

CBSE > Class 12 > Biology

1 answers

Pawan Pawan 7 years, 7 months ago

These muscles elevates the testis on upper side to maintain the temperature mostly in winter season

1Thank You

ANSWER

What is guberniculum

Posted by Varun Chauhan 7 years, 7 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

What is pedigree?

Posted by Shraddha Jain 7 years, 7 months ago

CBSE > Class 12 > Biology

1 answers

Amrinder Singh 7 years, 7 months ago

It is a dog food known as Pedigree.

0Thank You

ANSWER

Can you tell which metabolic pathway is taking place resulting in the formation of co2. Where do you think the bacteria for these fermentation came from?

Posted by Nishi Tyagi 7 years, 7 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

How many sperms will be produced from 10 primary spermatocytes & how many eggs will be produced from 10 primary oocytes ??

Posted by Tannya Pande 7 years, 7 months ago

CBSE > Class 12 > Biology

2 answers

Rhitika Rai 7 years, 7 months ago

40 sperms are formed nd 10 ova are formed

1Thank You

Rahul Kushwah 7 years, 7 months ago

40 sperms and 10 ova

2Thank You

ANSWER

What is the persentage of water in bones

Posted by Krishna Bandhu Singh 7 years, 7 months ago

CBSE > Class 12 > Biology

1 answers

Tannya Pande 7 years, 7 months ago

31%

0Thank You

ANSWER

Is the medical termination of pregnancy can be a non legal process?

Posted by Devang Desai 7 years, 7 months ago

CBSE > Class 12 > Biology

1 answers

Rohini Mandal 7 years, 7 months ago

Yes, because it is miused while determining the *** of the foetus by the method of amniocentesis and if the foetus is found to be a females MTP is done leading to female foeticide which is an illegal practice.

1Thank You

ANSWER

Page 206 of 308

myCBSEguide

myCBSEguide

Test Generator

CUET Mock Tests

Download myCBSEguide App

All Courses

Other Websites

CBSE Courses

Resources

Corporate

NCERT Solutions

CBSE Sample Papers