short biology notes

• Biology Revision short notes for neet 

Question : REPRODUCTION  

 Definition : It is the  biological  process  in  which  an organism   give to rise   to young   ones (offspring  similar  to  itself)reproduction are two types  asexual  reproduction    and  sexual  reproduction.

Question : Life span 

Definition: The period from the birth to the natural  death  of an organisms    is called  the life   span .     example of 

1.Tortoise ( 100 – 150  years )  

2.Crocodile ( 60 years )

3.parrots (140Years )  

4.crow( 15 years )

5.butterfly ( 1-2  week ) 

6.banyan tree  (150 -200) etc.

• Biology Genral Knowledge Question and Answer 

Question: Embryogenesis :-

It is the process In which development of the embryo from the zygote. The zygote go through cell division and differentiation.  While Cell division increases the number of cells  developing of the embryo, and cell differentiation helps  group of the cells undergo  certain  modifications to form specialized tissues and organs to form a  organism .  The animals are categorized  base on the  whether  the  development  of the zygote .  Oviparous :- The animals like reptiles  and birds fertilized egg is covered by a calcareous shell and is released into the outside environment. The development takes place inside the egg and the young one emerge. For instance birds and reptiles etc.  Viviparous :- The development of the zygote takes place inner part of   the female body, and the developed the young one is delivered outside. for instance, mammals, including humans etc.          

• 12th biology chapter wise important questions

Question : Pericarp;-  

  The ovary developed into the fruits which develops  a  thick  wall  called  pericarp