Advertisements
Advertisements
प्रश्न
Read the following statement and justify same in your own words with the help of suitable example.
There is evidences of fatal science among chordates.
Advertisements
उत्तर
- Early embryos of fish, amphibians, reptiles, birds, and mammals have very similar structures.
- As they continue to expand, they develop new patterns.
- The earliest commonality of vertebrate embryos demonstrates that all vertebrate classes shared a common ancestor during evolution.
- This is known as embryological evidence for vertebrate evolution.
APPEARS IN
संबंधित प्रश्न
Mammals : _________ : : Amphibia : Fishes
Give two examples of vestigial organs in human beings and plants.
(a) Select the homologous structures from the combinations given below:
(i) Forelimbs of whales and bats
(ii) Tuber of potato and sweet potato
(iii) Eyes of octopus and mammals
(iv) Thorns of Bougainvillea and tendrils of Cucurbita
(b) State the kind of evolution they represent.
Which one of the following pairs of vegetables is an example of homologous structures?
(A) Potato and sweet potato
(B) Carrot and radish
(C) Carrot and tomato
(D) Tomato and radish
Can the wing of a butterfly and the wing of a bat be considered homologous organs? Why or why not?
Attempt giving a clear definition of the term species.
Name any two temporary embryonic structures in vertebrates which provide evidence for evolution.
Name two animals having homologous organs and two having analogous organs. Name these organs.
Some dinosaurs had feathers although they could not fly birds have feathers that help them to fly. In the context of evolution, this means that ______
Write the names of those animals in whom some vestigial organs in human body are functioning.
Define phylogeny.
Very short answer question:
What is vestigeal organ?
Similarities in the initial stages indicate the _______ evidence.
Name the parts shown in the diagram.
Human jaw
The decaying process of C-14 occurs continuously in dead organisms only.
Give scientific reason.
Duck-billed platypus shows relationship with mammals.
Complete the flowchart.
The degenerated and non-functional organs found in an organism are called ______.
Select vestigial organs from the following.
Homologous organs and vestigial organs are examples of ______ type of evidence in evolution.
Which of these is not a vestigial organ in human beings?
Where is carbon dating used?
Why do all the gametes formed in human females have an X chromosome?
Evolution has exhibited a greater stability of molecular structure when compared with morphological structures. Comment on the statement and justify your opinion.
Tendons and ligaments are examples of ______.
Palaeontological evidence for evolution refers to the ______.
Complete the following diagram:
Complete the following chart:
I am the connecting link of annelida and arthropoda. What is my name?
Give a scientific reason.
Morphological evidences suggest that dog, sheep and wolf have a common origin.
As shown in figure below some organisms that share a common ancestor have features that have different functions, but similar structures.
These are known as ______. Give example.
Write down the difference between homologous and analogous organs.
Evolutionary convergence is the development of a ______.
Write a note on the significance of Palaeontology.
Define the term:
Homologous organs
Industrial melanism was highlighted by ______.
Define Palaeontology.
Write names of some vestigial organs in the human body.
