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Why do internodal segments of sugarcane is not propagated in a damp soil

Posted by Harsh Saini 8 years, 1 month ago

CBSE > Class 12 > Biology

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What are the important Topics in biology ..

Posted by Abshar Khan 8 years, 1 month ago

CBSE > Class 12 > Biology

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Does molecular scissors cuts the sequence in host organism also??

Posted by Rida Khan 8 years, 1 month ago

CBSE > Class 12 > Biology

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In downs syndrome, an extra chromosome is present I.e. chromosome no.21 . How do we know whether it's an x or y chromosome ?

Posted by Sanskruti Pradhan 8 years, 1 month ago

CBSE > Class 12 > Biology

1 answers

Annu Baghel 8 years, 1 month ago

21chromosome is autosome not x or y

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Name non human model used in human genome project.

Posted by Nischay Choudhary 8 years, 1 month ago

CBSE > Class 12 > Biology

1 answers

Aarti Sunaria 8 years, 1 month ago

Rice genome project

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Difference between ovipary and vivipary

Posted by The Bieb 8 years, 2 months ago

CBSE > Class 12 > Biology

1 answers

Divya Sen 8 years, 1 month ago

Oviparous organisms are those who lay eggs ex-fish while viviparous organism are those who directly give birth to thier young ones ex- humans.

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Difference between ovipary and vivipary with example

Posted by The Bieb 4 years, 9 months ago

CBSE > Class 12 > Biology

1 answers

Sia ? 4 years, 9 months ago

Oviparous Animal	Viviparous Animal
Oviparous organisms are those that lay eggs which can be either fertilised or unfertilised.	Those animals that directly give birth to alive young ones are referred to as viviparous animals.
The development of embryo takes place externally.	The embryo develops inside mother's uterus.
The egg yolk provides nutrition to embryo.	The embryo absorbs nutrients from mother's body during its foetal stage.
Eggs are exposed to several risks and damages which reduces survival rate for oviparous organisms	The chances of survival are high in viviparous animals as embryo stays fully protected inside the mother's womb.
Examples of oviparous organisms are birds, fish, insects, reptiles, amphibians.	Mammals are viviparous animals. It includes human beings, cats, dogs, lions, tigers and so on.

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Mnemonics for modifications of roots and stems.

Posted by Tarun Yadav 8 years, 2 months ago

CBSE > Class 12 > Biology

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Which all exams should a PCB student give after passing 12 ?

Posted by Nikita Dua 8 years, 2 months ago

CBSE > Class 12 > Biology

2 answers

Annu Baghel 8 years, 1 month ago

NEET, AIIMS, JIPMER

1Thank You

Affan Ahmad 8 years, 2 months ago

NEET, AIIMS

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Why with growing of age woman breasts turn to be saggy whereas earlier they have round breasts?

Posted by Abhishek Agarwalla 8 years, 2 months ago

CBSE > Class 12 > Biology

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viva questions for practical

Posted by Sandra B 8 years, 2 months ago

CBSE > Class 12 > Biology

5 answers

Annu Baghel 8 years, 1 month ago

Vse 7feb ko h physical ka

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Annu Baghel 8 years, 1 month ago

Vo Khahi se bhi kuch bhi pooch sakte h

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Annu Baghel 8 years, 1 month ago

Nhi lekin mujhe itna pta h

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Aastha Singh 8 years, 1 month ago

Anyways Annu tmhara kisi subject ka practical hua

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Annu Baghel 8 years, 2 months ago

There is no predetermined questions asked in viva

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Expail the formula of population density .

Posted by Rida Khan 8 years, 2 months ago

CBSE > Class 12 > Biology

6 answers

Vivek Saini 8 years, 2 months ago

See it in NCERT, it's just simple read it for 2 or 3 times you noted it

1Thank You

Rida Khan 8 years, 2 months ago

It's ohkk

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Vineit Kumar Gupta 8 years, 2 months ago

* i am a pcM guy so sorry i dont know its meaning in terms of biology if there is any

1Thank You

Rida Khan 8 years, 2 months ago

You must not be knowing...ur from PCM?

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Vineit Kumar Gupta 8 years, 2 months ago

As far as i know its defined as no of people residing per unit km square or in simple terms average no of people who lives in a that particular area if the area is 1km wide and 1 km in length

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Rida Khan 8 years, 2 months ago

It's explain*

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Does golgibody,er degenerates prophase or it disappears due to the increased translucent nature

Posted by Rabindra Tiwari 8 years, 2 months ago

CBSE > Class 12 > Biology

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Brief if sewage treatment plant

Posted by Chhavi Sharma 8 years, 2 months ago

CBSE > Class 12 > Biology

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What are important topics of chapter organism and population?I m facing many problems in that chapter..plzz help

Posted by Rida Khan 8 years, 2 months ago

CBSE > Class 12 > Biology

1 answers

Chinkee Jaatrana 8 years, 2 months ago

Abiotic factor, adaptation and population interaction

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How i prepare bio for prefect 70 mark in board?

Posted by Prashuk Jain 8 years, 2 months ago

CBSE > Class 12 > Biology

2 answers

Prashuk Jain 8 years ago

But it is not possible

1Thank You

Chinkee Jaatrana 8 years, 2 months ago

Read chapter with full concentration n solve last year paper

3Thank You

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What is incubation period? How long it is for AIDS virus?

Posted by Anj Kus 8 years, 2 months ago

CBSE > Class 12 > Biology

1 answers

Muskaan Sharma 8 years, 2 months ago

Incubation period is rhe duration from the attack of a pathogen upto first symptom of the disease caused by the pathogen. For AIDS it may vary from 4 months to a year

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What are withdrawal syndrome

Posted by Pankaj Sihag 8 years, 2 months ago

CBSE > Class 12 > Biology