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

Pathogen-sallamona typhii Symptoms-high fever(39 to 40°C),weakness, stomach pain , constipation , headache , loss of apetite etc. Mode of transmission-food and water contaminated with these pathogens. *treatment is not given in ncert book.

1Thank You

Anuradha Kumari 3 years, 1 month ago

Fghfh

2Thank You

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How is it that human female are rarely haemophillic

Posted by Malemnganbi Soubam 3 years, 1 month ago

CBSE > Class 12 > Biology

0 answers

ANSWER

what is the chemical basis on which the chromogenic substance act? explain how the substrates help in the differentiation process.why are such chromogenic substrates advantageous in the separation of non recombinants and transformants?

Posted by Vaibhav Pandey 3 years, 1 month ago

CBSE > Class 12 > Biology

0 answers

ANSWER

What is mean by nymphomania?

Posted by Vishnu Priyan 3 years, 1 month ago

CBSE > Class 12 > Biology

1 answers

Lavish Tyagi 3 years, 1 month ago

uncontrollable or excessive sexual desire in a woman.

1Thank You

ANSWER

Friends how much your syllabus is done in physics, chemistry 😣 please tell I am so tensed😞!!!!!!!

Posted by Shruti Kushwaha 3 years, 2 months ago

CBSE > Class 12 > Biology

3 answers

Lavish Tyagi 3 years, 1 month ago

Chemistry pe jada dhyan dena physics keto notes be pass Kara sakte hai ek baar ko

0Thank You

Jasseerat Sandhu 3 years, 1 month ago

1 chapter 🥲

1Thank You

Aseem Mahajan 3 years, 1 month ago

<font face ="Times New Roman">100%
exams also done result also announced (board)

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ANSWER

What is ivf

Posted by Saniya Shafique 3 years, 2 months ago

CBSE > Class 12 > Biology

3 answers

Aditya Pal 3 years ago

It's mean IVF (invertor fertilization ) in which the fertilization take place outside of the body in the suitable condition

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Anjali Verma 3 years, 1 month ago

In vitro fertilization

0Thank You

Akansha Rathod 3 years, 2 months ago

In vitro fertilization

2Thank You

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Longest and smallest bone of human body

Posted by Mohan Singh 3 years, 2 months ago

CBSE > Class 12 > Biology

4 answers

Anjali Verma 3 years, 1 month ago

Femur longest and steppe smallest

0Thank You

Vishnu Priyan 3 years, 2 months ago

797461

0Thank You

Zahoor Ahmad 3 years, 2 months ago

Femur longest in the leg Steppe smallest in the ear

1Thank You

Shuaib Ansari 3 years, 2 months ago

I don't know

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ANSWER

Any boy friend for me..💕

Posted by Chocolate Boy 3 years, 1 month ago

CBSE > Class 12 > Biology

5 answers

Vishnu Priyan 3 years, 2 months ago

🤭

0Thank You

Shruti Kushwaha 3 years, 2 months ago

Read ch- 3 bio class 12😂

0Thank You

Account Deleted 3 years, 2 months ago

I think you are on wrong app ..

4Thank You

Frogen 😍😍😆 3 years, 2 months ago

😂😂😂

1Thank You

Aseem Mahajan 3 years, 2 months ago

<font face ="Times New Roman">Yes call 100 for service

7Thank You

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Principles of inheritance and variation notes

Posted by Geetha Varshini 3 years, 2 months ago

CBSE > Class 12 > Biology

1 answers

Salim Khan 3 years, 1 month ago

Mendel

1Thank You

ANSWER

Who is the father of genetic

Posted by Aditya Pasawan 3 years, 2 months ago

CBSE > Class 12 > Biology

4 answers

Akshit Dogra 2 years, 5 months ago

Old genetics the father I'd Gregor Mendel

0Thank You

Anjali Verma 3 years, 1 month ago

Mendal

0Thank You

Vaibhav Pandey 3 years, 1 month ago

Gregor Johan Mendel

1Thank You

Vishal Bharande 3 years, 2 months ago

Johan mendel

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ANSWER

Fluid structure that release by testis and come out with penins, what have been called that Fluid ( In male reproduction)

Posted by Vishnu Priyan 3 years, 2 months ago

CBSE > Class 12 > Biology

2 answers

Sejal Singh 3 years, 2 months ago

Semen ( which includes sperm and seminal fluid)

0Thank You

Shreyash Dwivedi 3 years, 2 months ago

Semen

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ANSWER

Explain menstrual cycle ?

Posted by Ravi Maich 3 years, 2 months ago

CBSE > Class 12 > Biology

1 answers

Lavish Tyagi 3 years, 1 month ago

Already in the ncert book 📚

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ANSWER

State the impact of hormone estrogen and progesterone on the uterus of human female during 6 to 15 days of menstrual cycle

Posted by Lavi Gupta 3 years, 2 months ago

CBSE > Class 12 > Biology

2 answers

Vishnu Priyan 3 years, 2 months ago

Lavi darling hii

2Thank You

Shubham Baba 3 years, 2 months ago

With a neat labelled diagram describe the part of a typical angiosperms ovule

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ANSWER

How are pollen grains remaining conserved for long time

Posted by Aman Suryavanshi 3 years, 2 months ago

CBSE > Class 12 > Biology

2 answers

Tanisha Upadhayay 3 years, 1 month ago

The process is called cryopreservation

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Lavi Gupta 3 years, 2 months ago

They are conserved in liquid nitrogen under -196 temperature

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ANSWER

Which vaccine use in typhoid

Posted by Nitin Janmeda 3 years, 2 months ago

CBSE > Class 12 > Biology

4 answers

Sakshi Gupta 2 years, 11 months ago

Widal yes is used to confirm the typiod

0Thank You

Lavish Tyagi 3 years, 1 month ago

inactivated (killed) vaccine and the other is a live, attenuated (weakened) vaccine

0Thank You

Chameli Netam 3 years, 2 months ago

Ans.

1Thank You

Anu Anu 3 years, 2 months ago

Two vaccine :-1)Ty21a(oral),,,2)Vi polysaccharide (parental)

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ANSWER

Explain with example (a) monohybrid cross

Posted by Ranjeet Gupta 3 years, 2 months ago

CBSE > Class 12 > Biology

4 answers

Ruhani Arora 2 years, 11 months ago

Easy hai isme monohybrid ke liye cross bna Dena aur phenotype genotype ratio likh dena aur f1 f2 generation ke baare me explain krdena Incomplete dominance ke liye snapdragon flower ka example use karke cross bnana

0Thank You

Ranjeet Gupta 3 years, 2 months ago

Jaldi

0Thank You

Ranjeet Gupta 3 years, 2 months ago

Give me my answer

0Thank You

Ranjeet Gupta 3 years, 2 months ago

Explain with example (a) monohybrid cross (b) dihybrid cross (c) incomplete cross (d) co-dominance

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Which of these codons are cognate (a) UAA. (b) UAG. (c) UGG (d)UGA. (This is important to give the reason also)

Posted by Rajveer Singh 3 years, 2 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

Abiotic aur abiotic factor interaction kya kahalata hai

Posted by Amandeep Yadav 2 years, 11 months ago

CBSE > Class 12 > Biology

1 answers

Preeti Dabral 2 years, 11 months ago

Abiotic and biotic factors combine to create a system or, more precisely, an ecosystem, meaning a community of living and nonliving things considered as a unit. In this case, abiotic factors span as far as the pH of the soil and water, types of nutrients available and even the length of the day.

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What is the metastasis

Posted by Aditya Shukla 3 years, 2 months ago

CBSE > Class 12 > Biology

2 answers

Rahul 👑 3 years, 2 months ago

It is the process by which the cancerous cells are transferred from one site to the other to get that part of body infected ,it is transferred through blood.

1Thank You

Anu Anu 3 years, 2 months ago

The spread of cancer cells from the place where they first formed to another part of body .In metastasis,cancer cells break away from the original (primary) tumor , travel through the blood or lymph system ,and form a new tumorin other organs or tissue of the body....

2Thank You

ANSWER

DNA polymerase and RNA polymerase differ in their requirement while functioning explain

Posted by Sangha Chumjik 3 years, 2 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

For class 12th science students Is ncert biology book good or not How ?

Posted by Account Deleted 3 years, 2 months ago

CBSE > Class 12 > Biology

5 answers

Jasseerat Sandhu 3 years, 1 month ago

Definitely NCERT is good enough for board and competitive exams preparation. Besides this, you could use guides/references (such as trueman) for better diagrams and extra quesions.

1Thank You

Anu Anu 3 years, 2 months ago

NCERT book is enough for CBSE 12 preparation

2Thank You

Lavish Tyagi 3 years, 2 months ago

Bible for bords aur even competitive exams students can read this book

2Thank You

Account Deleted 3 years, 2 months ago

It's not good it is best and if you want to know how just read it thoroughly...you will understand how it is best ..

2Thank You

Vaseem Turky 3 years, 2 months ago

Yes ncert books is enough for cbse and neet also

3Thank You

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Is blood DNA or heredity DNA same ?

Posted by Account Deleted 3 years, 2 months ago

CBSE > Class 12 > Biology

1 answers

Vaseem Turky 3 years, 2 months ago

Yes bro

0Thank You

ANSWER

Can we call human evolution as adaptive radiation

Posted by Janvi Chahal 3 years, 2 months ago

CBSE > Class 12 > Biology

1 answers

Janvi Chahal 3 years, 2 months ago

1Thank You

ANSWER

What is the role of tapetum?

Posted by Shivam Pathak 3 years, 2 months ago

CBSE > Class 12 > Biology

3 answers

Divya. Kumari 3 years, 2 months ago

It provide Nutrition to the pollen grains.

3Thank You

Jasleen Sandhu 3 years, 2 months ago

Tapetum is the innermost layer of the microsporangium. It provides nourishment to the developing pollen grains. During microsporogenesis, the cells of tapetum produce various enzymes, hormones, amino acids, and other nutritious material required for the development of pollen grains.

1Thank You

Aman Singh 3 years, 2 months ago

Provide nutrition

1Thank You

ANSWER

What are pseudopodiospore

Posted by Steiner Land 3 years, 2 months ago

CBSE > Class 12 > Biology

1 answers

Jasleen Sandhu 3 years, 2 months ago

Pseudopodiospores are formed in amoeba due to the unfavorable conditions. It retracts it pseudopodia and forms a spherical mass of the cell. The plasma membrane secretes three-layered body wall which encloses the body. The structure is known as cyst.

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ANSWER

What are pathogens

Posted by Ayush Gupta 3 years, 2 months ago

CBSE > Class 12 > Biology

3 answers

Rahul 👑 3 years, 2 months ago

Disease causing microorganisms.....🧟🧟

0Thank You

Jasleen Sandhu 3 years, 2 months ago

A pathogen is defined as an organism causing disease to its host, with the severity of the disease symptoms referred to as virulence. Pathogens are taxonomically widely diverse and comprise viruses and bacteria as well as unicellular and multicellular eukaryotes.

1Thank You

Account Deleted 3 years, 2 months ago

Disease causing agents ..

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