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Why are vaccines not lifelong effective for diseases like typhoid, pneumonia

Posted by Khushi Sharma 4 years, 4 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

A red coloured Snapdragon plant was crossed with a white flowered one. Show the monohybrid cross and explain the F2 results. Which phenomena does this cross show.which law of Mendel is disproved in this observation

Posted by Sonu Sharma 4 years, 4 months ago

CBSE > Class 12 > Biology

2 answers

Aditya Singh 4 years, 3 months ago

It lead to the Study of Incomplete dominance As the Ratio resulted in as 1:2:1 1red ,2 Pink and 1 White it was seen that R was not completely dominant Over r and Made it Easy to distinguish between Rr from RR and rr

Black Panther 4 years, 4 months ago

Law of dominance 1st- characters are controlled by discreet units called gens 2- in presence of dominance gene recessive gene does not express itself. 1st +2nd law constitute 'LAW OF DOMINANCE'

ANSWER

How venerial disease spread in mouth??

Posted by Black Panther 4 years, 4 months ago

CBSE > Class 12 > Biology

1 answers

Muskan Saini 4 years, 3 months ago

Many sexually transmitted disease ( STDs) can be spread through oral ***. Using a condom , dental dam or other barrier method method everytime you have oral *** can reduce the risk of giving or getting on STD . There is little to no risk of getting or transmitting HIV from oral *** ....

ANSWER

CBSE is the most unexpected boards ?? ?

Posted by Nimesh Jangid 4 years, 4 months ago

CBSE > Class 12 > Biology

5 answers

Aahana ❄❄ 4 years, 3 months ago

??

Devil ? 4 years, 4 months ago

@khushi ... This is the may month and now cbse is thinking changing the pattern of exam ....

Khushi Bhati 4 years, 4 months ago

Cbse is the most wonderful and useful board for me bcz I take interest to study in cbse board... u should try to take interest.... and take it easy don't think, it's a burden for you...... try to study with fun or enjoyment.... be happy and stay safe??

? Royal Thakur ? 4 years, 4 months ago

? ye emoji glti se chli h so sorry ..

? Royal Thakur ? 4 years, 4 months ago

What happen ...? ?????

ANSWER

Explanation of medals law of inheritance

Posted by Anisha Yadav 3 years, 11 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

Functions of Collip's hormone ???

Posted by Aahana ❄❄ 4 years, 4 months ago

CBSE > Class 12 > Biology

1 answers

Pawan Kumar 4 years, 4 months ago

The hormones released by the parathyroid gland is called parathyroid hormones, Collips hormone, or parathormone (PTH). This hormone helps in maintaining blood calcium levels along with calcitonin.

ANSWER

How venerial disease can spread in buccal cavity?

Posted by Black Panther 4 years, 4 months ago

CBSE > Class 12 > Biology

1 answers

Muskan Saini 4 years, 3 months ago

.Sore in the mouth , which may be pain less. .Lesions similar to cold sores and fever blister around the mouth. .Sore throat and difficult swallowing . .Redness with while spots resembling strep throat. .Swollen tonsils and lymph nodes......

ANSWER

Exam kab honge???

Posted by Black Panther 4 years, 4 months ago

CBSE > Class 12 > Biology

5 answers

Black Panther 4 years, 4 months ago

Yes

Aahana ❄❄ 4 years, 4 months ago

@karm modh ::It's too boring to revise or see the same books ??

Black Panther 4 years, 4 months ago

Anuradha patwari hope it should be taken a early as much possible because now it's boring to revise same syllabus for many times.

Anuradha Patwari 4 years, 4 months ago

Exam cancel hai pr who want to give they have to wait till the date sheet came

Muskan Saini 4 years, 4 months ago

Abhi nhi hoga corona chalara ha plg

ANSWER

Are these offspring likely to be genetically identical tor different

Posted by Kulwant Kaur 4 years, 4 months ago

CBSE > Class 12 > Biology

2 answers

Black Panther 4 years, 4 months ago

Correct in 1st line in place of sexual reproduction it's asexual reproduction.

Black Panther 4 years, 4 months ago

By which by sexual or asexual reproduction?? By sexual reproduction offsprings would be genetically identical called clones and member of each clone is called ramet. By sexual reproduction offspring might be genetically different. In human beings.

ANSWER

What is BMR????EXPLAIN

Posted by Aahana ❄❄ 4 years, 4 months ago

CBSE > Class 12 > Biology

3 answers

Aahana ❄❄ 4 years, 4 months ago

Thank you ? both of u ??

Black Panther 4 years, 4 months ago

Maintained by tetraiodothyronin. Basal ka metabolic rate.

Pankaj Kumari 4 years, 4 months ago

Basal Metabolic Rate( BMR) is the amount of energy your body burns at rest on a daily basis. In other words: It is the number of calories required to keep your body function while you are not doing any physical activities.

ANSWER

Can synthetic oxygen carries be detected ?

Posted by Muskan Saini 4 years, 4 months ago

CBSE > Class 12 > Biology

2 answers

Anil Harijan 4 years, 4 months ago

Ugjt

Umesh Choudhary 4 years, 4 months ago

Yes

ANSWER

What are the side-effects of EPO misuse?

Posted by Muskan Saini 4 years, 4 months ago

CBSE > Class 12 > Biology

2 answers

Muskan Saini 4 years, 3 months ago

Tq dear?

Sia ? 4 years, 4 months ago

While proper use of EPO has an enormous therapeutic benefit in the treatment of anaemia related to kidney disease, its misuse can lead to serious health risks for athletes who use this substance simply to gain a competitive edge. It is well known that EPO, by thickening the blood, leads to an increased risk of several deadly diseases, such as heart disease, stroke, and cerebral or pulmonary embolism. The misuse of recombinant human EPO may also lead to autoimmune diseases with serious health consequences.

ANSWER

Can you list the change seen in human being that are indicative of reproductive maturity ?

Posted by Muskan Saini 4 years, 4 months ago

CBSE > Class 12 > Biology

3 answers

Black Panther 4 years, 4 months ago

Welcome dear

Muskan Saini 4 years, 4 months ago

Tq dear?

Black Panther 4 years, 4 months ago

Reproductive maturity are of following types-: 1 enlargement of ***** in men 2 preejaculation of sexual excitement in female and men 3 ***** enlarges at night while sleeping 4 aggressiveness 5 attracted towards sexual eplicts. There are many more.

ANSWER

What is a cell

Posted by Mohd Irfan 4 years, 4 months ago

CBSE > Class 12 > Biology

5 answers

Jyoti Prabha 4 years, 4 months ago

Cell is the structural and functional unit of life. It is veri important for life

Simran Ror 4 years, 4 months ago

Cells are the smallest unit of life and hence are referred to as building block of life .

Muskan Saini 4 years, 4 months ago

Life

Muskan Saini 4 years, 4 months ago

The cell is the basic structural & functional unit of cell.

Black Panther 4 years, 4 months ago

Structural and functional unit of life that organises our bodily functions. And it's group forms tissues...

ANSWER

Nucleus ..???

Posted by ? Royal Thakur ? 4 years, 4 months ago

CBSE > Class 12 > Biology

2 answers

Black Panther 4 years, 4 months ago

It's study counter plzz don't waste time in gossiping your underated talks. Ask and just answer the questions.

? Royal Thakur ? 4 years, 4 months ago

Good after noon Bhai ? ...Mai thik hu bhai ...pdhai bhi thik he chl rhi h ...chemistry me thodi problem ho rhi h ....aap bataoo kaise ho ..? Aap pdhai kaise chl rhi h ...?

ANSWER

What are the causes of increase in human population

Posted by Warimeka Bareh 4 years, 4 months ago

CBSE > Class 12 > Biology

4 answers

Jyoti Prabha 4 years, 4 months ago

There are soo many causes to increase in human population.they are :- 1.) Reproduction 2.) Illetrates people doesn't know about contraceptive methods. 3.) Discremination Between boy and girl 4.) Uneducated people doesn't understand about increase in human population and they continue their life as they want 4.) They never follow rule (ham do hmare do) they always think about more than this.

Arman Shaikh 4 years, 4 months ago

Chudai

Aman ❤️ 4 years, 4 months ago

There are many reasons Illiteracy Poor knowledge of contraception Increasing resources Decrease in mortality rate Desire of boy

Anuradha Patwari 4 years, 4 months ago

Reproduction

ANSWER

Describe the changes that occur in ovary and uterus during reproduction cycle, before and after fertilization.

Posted by Amrita Kumari 4 years, 4 months ago

CBSE > Class 12 > Biology

2 answers

Black Panther 4 years, 4 months ago

Like to thok

Black Panther 4 years, 4 months ago

Before fertilization weight of uterus is 50-100 gm and after it is 500 gm. Myometrium undergoes contraction during parturition. After fertilization ovary starts to secrete post fertile hormones like prolactin and oxytocin.

ANSWER

Although there are 16 squares how many different types of phenotype and genotypes are formed in dihybrid cross of pea ?

Posted by Adarsh Gharami 4 years, 4 months ago

CBSE > Class 12 > Biology

1 answers

Black Panther 4 years, 4 months ago

9:3:3:1 and 1:2:1:2:4:2:1:2:1

ANSWER

What is meant by fate of blastomere in indeterminate situation??

Posted by Black Panther 4 years, 4 months ago

CBSE > Class 12 > Biology

1 answers

Sia ? 4 years, 4 months ago

A type of cleavage on the basis of the potentiality of blastomeres in which the blastomeres (resulting from cleavage) are qualitatively equipotential and each has the ability to develop into a complete embryo when isolated since its developmental fate is not determined in the early embryonic stage.

ANSWER

What is emasculation and bagging technique? How is it useful in a plant breeding programme

Posted by Aniket Ranjan 4 years, 4 months ago

CBSE > Class 12 > Biology

1 answers

Black Panther 4 years, 4 months ago

Removal of anthers by cutting them out from female flowers and bagging is done to prevent the female flower to get pollinated with some other pollen grain by pollinating agents. It is used to produce various genetic variations in plant and may be dusted with some other pollen grain which does genetic variability and it is the root of any plant breeding programme.

ANSWER

Write the significance of vegetative propagation ?

Posted by Tejinder Dhir 4 years, 4 months ago

CBSE > Class 12 > Biology

2 answers

Black Panther 4 years, 4 months ago

Significance- 1- plant can be produced by a propagule or any part of a plant. 2-not a time consuming process 3- can be implied to the food that we usually take in our diet. 4- produces its own copy.

Anuradha Patwari 4 years, 4 months ago

Asexual reproduction Produce own copy

ANSWER

What are the different phases in sexual reproduction

Posted by Chandradeep Singh Baghel 4 years, 4 months ago

CBSE > Class 12 > Biology

1 answers

Anshika Tripathi 4 years, 4 months ago

Juvenile phase Reproductive phase Ageing

ANSWER

What id biotechnology

Posted by Rajidas Rajidas 4 years, 4 months ago

CBSE > Class 12 > Biology

1 answers

Sunita Garg 4 years, 4 months ago

The use of biology in technology to produce products and processes useful for human is termed as biotechnology.

ANSWER

Topic for biology project

Posted by Parv Vats 4 years, 4 months ago

CBSE > Class 12 > Biology

4 answers

Muskan Saini 4 years, 4 months ago

Human heart.

Karishma Bhadana 4 years, 4 months ago

Different tropic levels

Anuradha Patwari 4 years, 4 months ago

Genetic disorders Central dogma Transgenic animals Biotech

Anshika Tripathi 4 years, 4 months ago

Biotechnology Cancer Hormones Enzymes

ANSWER

Which is the best channel on YouTube to study biology I am very confused and so irritating by lockdown please help me and if anyone know about physics and chemistry then also tell please please please please please please please please please please please please please please please please please

Posted by Nitika Chaudhary 4 years, 4 months ago

CBSE > Class 12 > Biology

5 answers

Aahana ❄❄ 4 years, 4 months ago

Physicswallah is best

Nikku Ad 4 years, 4 months ago

Biology vedantu biotonic and chemistry and physics unacademy

Anshika Tripathi 4 years, 4 months ago

Unacdemy Ritu Rattewal

Ayush Saini 4 years, 4 months ago

Bro take subscription of physicswallah neet lakshay

Gargi Arya 4 years, 4 months ago

Unacademy class 12th

ANSWER

Which method sita suggested for getting good quality fruits

Posted by Najmus Sehar 4 years, 4 months ago

CBSE > Class 12 > Biology

2 answers

Black Panther 4 years, 4 months ago

Plant breedin- 1 collection of germplasm,evaluation and selection of parents, then cross hybridisation,production of superior offsprings,evaluation and communication to new cultivars. 2 to induce a foreign gene in that plant(tailor made effect).

Sia ? 4 years, 4 months ago

Please ask question with complete information.

ANSWER

What is sporeformation explain with example

Posted by Gressy Gresst 4 years, 4 months ago

CBSE > Class 12 > Biology

4 answers

Anshika Tripathi 4 years, 4 months ago

Koi organism bnyyga cyst wall

Anshika Tripathi 4 years, 4 months ago

Spore jo h wo jb koi unfavorable condition ho to b wo cyst ki wall bnale or fir andr hi osmein division hooja or for relase ho whi sporulation

Yogita . 4 years, 4 months ago

Sporeformation is a process through which at unfavourable conditions organisms can grow spores and at the arrival of favourable conditions they break their outer wall and desperse that spores for the formation of new oragansim .for ex bread mould , rhizopus

Bharath Kumar 4 years, 4 months ago

Egg

ANSWER

Difference between bacterial transformation and

Posted by Pranav P 4 years, 4 months ago

CBSE > Class 12 > Biology

2 answers

Anuradha Patwari 4 years, 4 months ago

Full question

Anuradha Patwari 4 years, 4 months ago

What

ANSWER

How much time do it need for the sperm and egg to be fertilised

Posted by Namitha Babu 4 years, 4 months ago

CBSE > Class 12 > Biology

1 answers

Anuradha Patwari 4 years, 4 months ago

Egg wait 48 hours for sperm

ANSWER

Human reproduction sort note

Posted by Mahesh Rajput 4 years, 4 months ago

CBSE > Class 12 > Biology

2 answers

Sia ? 4 years, 4 months ago

It consists of : The primary *** organ that is a pair of ovaries. Secondary *** organs- the duct system consisting of a pair of fallopian tube, a uterus, cervix and ******. External genitalia.

Aahana ❄❄ 4 years, 4 months ago

??

ANSWER

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