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

No products in the cart.

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

Ask Question

Describe the DNA structure

Posted by Shilpi Bhardwaj 7 years, 5 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

Define parthenogenisis give example

Posted by Chaithali Savanth 7 years, 5 months ago

CBSE > Class 12 > Biology

1 answers

Shivali Sharma 7 years, 5 months ago

Parthenogenesis is a form of reproduction in which egg develops into a complete offspring without fertilisation. Eg-Rotifers ,bees

2Thank You

ANSWER

Translation initiation

Posted by Neha Gupta 7 years, 5 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

What is root

Posted by Abhishek Choudhary 7 years, 5 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

How DNA show semi conservative nature?

Posted by Deepika Singh 7 years, 5 months ago

CBSE > Class 12 > Biology

1 answers

Anushka Priya 7 years, 5 months ago

Dna shows semiconservation as after completion of replication each daughter molecule of DNA has one parental strand and one newly synthesised strand

1Thank You

ANSWER

What is the function of prophoblast in human embryo

Posted by Sanjana Mukherjee 7 years, 5 months ago

CBSE > Class 12 > Biology

1 answers

Ritu Singh 7 years, 5 months ago

Trophoblast cells which cover the inner mass cells are called cells of rauber. These cells give rise to chorionic villi which fuse with endometrium of uterus and helps in implantation

1Thank You

ANSWER

List the components of embryo sac and mention their fate on fertilisation ?

Posted by Gouranshi Pandey 7 years, 5 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

What is the function of germspore

Posted by Xxxx X 7 years, 5 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

If a fungal thallus has both male and female reproductive structure it will be called as

Posted by Xxxx X 7 years, 5 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

Why are medal selection pea plant

Posted by Priyanka Tak 7 years, 5 months ago

CBSE > Class 12 > Biology

1 answers

Gulshan Kumar Sahu 7 years, 5 months ago

B/c 1.It can be grown in synthetic medium 2.male & female are easily distinguished

0Thank You

ANSWER

What is diffusion

Posted by Sanjana Yadav 7 years, 5 months ago

CBSE > Class 12 > Biology

1 answers

Avni Sankrit 7 years, 5 months ago

Diffusion is the process of a substance spreading out to evenly fill it's container or enviorment .in a solution a concentrated Solute diffuses to spread evenly in its solvent .concentration to low concentration.

0Thank You

ANSWER

What are the main causes of banned of Amniocentesis

Posted by Aman Pandey 7 years, 5 months ago

CBSE > Class 12 > Biology

1 answers

Aryan Rajput 7 years, 5 months ago

It promoted female Feoiteside

1Thank You

ANSWER

How could the translation of mrna is terrminated?

Posted by Tobarak Ali 7 years, 5 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

What is the relation between characters,gene&contrasting character

Posted by Sarita Tripathi 7 years, 5 months ago

CBSE > Class 12 > Biology

1 answers

Mansee Saini 7 years, 5 months ago

They all are the heredity material

1Thank You

ANSWER

What role calcium play in blood clotting??

Posted by Aryan Rajput 7 years, 5 months ago

CBSE > Class 12 > Biology

1 answers

Mohit Kumar 7 years, 5 months ago

to stop the blood clotting by making a thick fibre mass made up of ca++ ion

2Thank You

ANSWER

Define foetal ejection reflex ?

Posted by Sumit Kumar Sahu 7 years, 5 months ago

CBSE > Class 12 > Biology

1 answers

Varnika Bhatt 7 years, 5 months ago

It is the reflex signal induced by the fully developed embryo and the placenta leading to mild contractions of uterine muscles which stimulate maternal pitutary to secrete oxyticin.

2Thank You

ANSWER

Explain the role of the first trofic level in an ecosystem

Posted by Tanya Singh 7 years, 5 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

Ts of mammalian testis revealing seminiferous tubbles sho diff.type of cell:1)name the two type of cell of germinal epithilum.2)ne the cells scattered in connective tissue and lying between seminiferrous tubules.3)differentiate both them on basis of their function

Posted by Pooja Kumari 7 years, 5 months ago

CBSE > Class 12 > Biology

1 answers

Ashish Yadav 7 years, 5 months ago

Germ cell and sertoli cell

0Thank You

ANSWER

What is operon ????

Posted by Saloni S 7 years, 5 months ago

CBSE > Class 12 > Biology

2 answers

Tarun Deshwal 7 years, 5 months ago

gene linked together to synthesize metabolic process

0Thank You

Pooja Kumari 7 years, 5 months ago

It is made up of linked gene which regulate other gene responsible for protein synthesis

0Thank You

ANSWER

Why is there a need for meiosis 2 to occur??

Posted by Sanchi Nagpal 7 years, 5 months ago

CBSE > Class 12 > Biology

1 answers

Paras Gupta 7 years, 5 months ago

Because only in meosis 2 chromosomal no is maintained to became haploid

1Thank You

ANSWER

Colostrum??

Posted by Aryan Rajput 7 years, 5 months ago

CBSE > Class 12 > Biology

1 answers

Atharv Tiwari 7 years, 5 months ago

It is the first milk ejaculated by the breast and. It contains antibody and also the all the nutrients except iron and vitamin C because it coalugate the milk if they present in the colostrum

1Thank You

ANSWER

What is archesporium?

Posted by Aryan Rajput 7 years, 5 months ago

CBSE > Class 12 > Biology

1 answers

Sonam Sharma 7 years, 5 months ago

Single cell or group of cells from which a mother cell develops as well as its a basic structural & fumctional unit for the organisms

0Thank You

ANSWER

What happen during fertilization after many sperm reach close to ovum?

Posted by Raman Khosa 7 years, 5 months ago

CBSE > Class 12 > Biology

1 answers

Aryan Rajput 7 years, 5 months ago

When a sperm fuses with egg, it (sperm) comes in contact with zona pellucida and induces changes in the membrane that blocks the entry of additional sperms

0Thank You

ANSWER

Gemotogenis

Posted by Sachin Kumar Yadav 7 years, 5 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

Does brain helps in reflex action or not?

Posted by Sahil Sharma 7 years, 5 months ago

CBSE > Class 12 > Biology

1 answers

Avnesh Yadav 7 years, 5 months ago

0Thank You

ANSWER

what is an allele?

Posted by Vaibhav Waghmare 7 years, 5 months ago

CBSE > Class 12 > Biology

1 answers

Hina Sagar 7 years, 5 months ago

Genes that codes for a contrasting trait is called allele.

0Thank You

ANSWER

What is protective mimicry explain with example

Posted by Munna Yadav 7 years, 5 months ago

CBSE > Class 12 > Biology

0 answers

ANSWER

Explanation of spermatogenesis and oogenesis.

Posted by Takshi Murari 7 years, 5 months ago

CBSE > Class 12 > Biology

1 answers

Aryan Rajput 7 years, 5 months ago

Formation of male gamates i.e. Sperms from spermatogonia is called spermatogenesis While Formation of female gamate i.e.ovums from oogonia us termed as oogenesis

1Thank You

ANSWER

Chapter 8 textual and net mcq

Posted by Zaid Jagrala 7 years, 5 months ago

CBSE > Class 12 > Biology