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Subject: Biology, asked on 21/6/16

in which of following speciation occur at fastest rate- crow, parrots, and tortoise. why?

Subject: Biology, asked on 20/6/16

choose the correct option for the following question :-
All life on earth derives its energy, directly or indirectly from the sun except
1.chemosynthetic bacteria
2.pathogenic bacteria
3.Autotrophs
 

Subject: Biology, asked on 20/6/16

Stanley L.Miller performed the first successful experiment to access the validity of the claim for origin of organic molecules in the primeval earth condition. The control apparatus contained every arrangement except that it was devoid of :-
1. energy source
2.oxygen

Subject: Biology, asked on 30/3/16

is it compulsory to get a minimum score in all the three subjects (ie. physics, chemistry, biology) in AIPMT exam to get admission in mbbs ? Please answer me fast.

Subject: Biology, asked on 23/3/16

had darwin explained about over speciation?

Subject: Biology, asked on 21/3/16

according to darwin's theory:
A)intraspecific struggle are harmful struggle
B)useful variations are selected by nature
C)harmful variatons are avoided by nature
D)continuous use of specific organ should be well developed by next generation

a)B,C,D are correct
b)A,B,C,D are correct
c)A,B,C are correct
dA,B are correct

Subject: Biology, asked on 21/3/16

gene pool of a population tends to remain stable if the population is large, without large scale mutations, without migration and with...
a)random mating
b)moderate environmental changes
c)natural selection
d)reduction in predation

Subject: Biology, asked on 31/1/16

dear experts 

if in exam the ques will be to define the convergent evolution, then what we will write ,
there are 2 defination for that- 

1- the analogus organ having diff structure but same functions are convergent evolution. 

2- when adaptive radiation occurs in a isolated geographical area then its called as convergent evolution ..

ANSWER SOON ???

Subject: Biology, asked on 7/9/15

Difference between human and ape?

Subject: Biology, asked on 15/8/15

estimation of CO, O3,SO2

Subject: Biology, asked on 20/7/15

dear experts

explain me the harse-chase experiment in detail ??

its a 5 marks ques .....

plzz help

Subject: Biology, asked on 6/7/15

dear meritnation expert

we consider your study material to be the best but u are not including everything in the study material..

for example- in the study material of

class 12 cbse,,, sub- biology chapter evolution

u didntinclude the theory of special creation, theory of panspermia, and theory of spontaneous generation and also louispasturs experiment in the study material..

So, kindly request you to plzz add those as they are imp fr exams...

Subject: Biology, asked on 26/2/23

Question-13 answer please?

Subject: Biology, asked on 11/10/22

What are the key concepts in the evolution theory of Darwin?. Two organisms occupying a particular geographical area (say desert) show similar adaptive strategies. Taking examples, describe the phenomenon

Subject: Biology, asked on 11/10/22

A Chimpanzee holds objects with hand and an elephant with its proboscis (trunk). Are these organs homologous or analogous? Give reason for your answer. While creation and presence of variation is directionless, natural selection is directional as it is in the context of adaptation. Comment.

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