Give difference Amongest Lamarckism, Darwinism and Mutation Theory.

English

Gujarati

Hindi

6.Evolution

medium

Give difference Amongest Lamarckism, Darwinism and Mutation Theory.

Option A

Option B

Option C

Option D

Solution

Properties	Lamarckism	Darwinism	Mutation Theory
$(a)$ Vital force	The theory believes that every organism has an internal vital force that tends to increase its size upto a certain limit.	Darwinism does. not believe in internal vital force.	No internal vital force is involved.
$(b)$ Conscious Reaction	Animals with well developed nervous system react consciously to any change in environment.	Darwinism does not involve any conscious reaction.	No conscious reaction is belived to take part in the process of evolution.
$(c)$ Appetency	The theory considers appetency or desires on the part of animals an important force in the development of modifications.	It is not a constituent of the theory.	Appetency is not involved.
$(d)$ Use and disuse	The organs put to more use are believed to develop more while organs not used begin to degenerate.	The theory is silent about use and discuss of organs.	The theory is silent about it.

Standard 12

Biology

Share

Similar Questions

Given below are four statements $(A-D)$ each with one or two blanks. Select the option which correctly fills up the blanks in two statements. Statements :

$(A)$ Wings of butterfly and birds look alike andare the results of _$(i)$_ evolution.

$(B)$ Miller showed that $CH_4 , H_2 , NH_3$ and _$(i)$_ when exposed to electric discharge in a flaskresulted in formation of _$(ii)$_ .

$(C)$ Vermiform appendix is a _$(i)$_ organ and an _$(ii)$_ evidence of evolution.

$(D)$ According to Darwin evolution took placedue to _$(i)$_ and _$(ii)$_ of the fittest.

medium

(AIPMT-2010)

Contribution of scientist : Hugo de Vries, Hardy – Weinberg and Ernest Haeckel.

medium

How do you express the meaning of words like race, breed, cultivars or variety ?

medium

The three natural processes that form the basis for evolution are

medium

Definitions / Explanation : Recapitulation theory or Biogenetic law & Palaeontology

easy