$(a)$ What function is performed by human arms,forelimbs of a dog,and forelimbs of whales?
$(b)$ Which type of organs are these?
$(c)$ Why are they called so?
$(b)$ Which type of organs are these?
$(c)$ Why are they called so?
(N/A) Human arms are used for holding and manipulating objects.
Forelimbs of a dog are used for running and locomotion.
Forelimbs of whales are used as paddles for swimming.
$(b)$ These are known as homologous organs.
$(c)$ They are called homologous organs because they share a common ancestral origin and similar basic anatomical structure,even though they have evolved to perform different functions in different environments.
Forelimbs of a dog are used for running and locomotion.
Forelimbs of whales are used as paddles for swimming.
$(b)$ These are known as homologous organs.
$(c)$ They are called homologous organs because they share a common ancestral origin and similar basic anatomical structure,even though they have evolved to perform different functions in different environments.
Explore More
Similar Questions
$(a)$ What are monohybrid and dihybrid crosses?
$(b)$ How did Mendel prove that tallness is the dominant trait and dwarfness is the recessive trait in a pea plant? Explain with the help of a monohybrid cross.
$(b)$ How did Mendel prove that tallness is the dominant trait and dwarfness is the recessive trait in a pea plant? Explain with the help of a monohybrid cross.
Difficult
View SolutionSelect the incorrect statement.
Medium
View SolutionFarmers generated different vegetables from wild cabbage by artificial selection. Name the vegetables obtained for the following desired traits:
$(i)$ Arrested flower development
$(ii)$ Sterile flowers
$(iii)$ Very short distances between leaves
$(iv)$ Swollen parts
$(v)$ Broader leaves
$(i)$ Arrested flower development
$(ii)$ Sterile flowers
$(iii)$ Very short distances between leaves
$(iv)$ Swollen parts
$(v)$ Broader leaves
Medium
View Solution$A$ woman having blood group $B$ marries a man having blood group $A$ and they have four offspring. Two children have blood group $O$,one has blood group $B$,and one has blood group $AB$. Now,answer the following:
$(i)$ Which blood group is dominant?
$(ii)$ Which blood group is recessive?
$(iii)$ What are the genotypes of the parents?
$(iv)$ Show the possible genotypes and phenotypes of the offspring.
$(i)$ Which blood group is dominant?
$(ii)$ Which blood group is recessive?
$(iii)$ What are the genotypes of the parents?
$(iv)$ Show the possible genotypes and phenotypes of the offspring.
Difficult
View Solution$A$ zygote which has an $X$-chromosome inherited from the father will develop into a
Medium
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo