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प्रश्न
I am a connecting link between reptiles and mammals. Who am I?
उत्तर
Duck-billed platypus
APPEARS IN
संबंधित प्रश्न
Mammals : _________ : : Amphibia : Fishes
Give two examples of vestigial organs in human beings and plants.
Given below is the list of vegetables available in the market. Select from these the two vegetables having homologous structures:
Potato, sweet potato, ginger, radish, tomato, carrot, okra (Lady’s finger)
(A) Potato and sweet potato
(B) Radish and carrot
(C) Okra and sweet potato
(D) Potato and tomato
Can the wing of a butterfly and the wing of a bat be considered homologous organs? Why or why not?
Explain the evolution of giraffe's neck according to Lamarck's theory of evolution.
Human tailbone is a vestigial organ. Explain.
The organs which perform different functions but have the same basic structure are known as :
(a) homologous organs
(b) analogous organs
(c) homolytic organs
(d) analytic organs
Wing of an insect and forelimb of a bird are :
(a) analogous organs
(b) analeptic organs
(c) homologous
(d) homophobic organs
Vestigial organ ______ present in human body is proof of evolution.
Write the names of those animals in whom the human body organs are functioning.
Explain with suitable examples importance of anatomical evidence in evolution.
With the help of diagrams, describe emasculation and bagging.
What do you mean by vestigial structures? Name four vestigial organs found in man.
Choose the correct option of the following question:
Wings of Insect and Birds are examples of :
Long answer question.
Would you consider wings of butterfly and bat as homologous or analogous and why?
_____________ is a vestigial organ in human beings.
The decaying process of C-14 occurs continuously in dead organisms only.
Give scientific reason.
Peripatus is said to be the connecting link between Annelida and Arthropoda.
Enlist the evidences of evolution.
Observe the following images and answer the questions.
- Which evolutionary evidences are indicated in the given picture?
- How are they formed?
- Which method is used to measure their age or their time?
Write the answers to the questions by observing the figure below.
 |
 |
 |
| (a) | (b) | (c) |
- Write the name of the animal ‘(a)’ in the figure.
- Write the name of the animal ‘(b)’ in the figure.
- Write the name of the animal ‘(c)’ in the figure.
- Which evolutionary evidence is illustrated by this figure?
- Write the definition of that evidence for evolution.
Which of these is not a vestigial organ in human beings?
Why do all the gametes formed in human females have an X chromosome?
Tendons and ligaments are examples of ______.
Flippers of Penguins and Dolphins are examples of:
Organs having similar functions but different origin and development are known as:
What are we referring to? When we say 'simple organisms' or 'complex organisms'.
How do we compute the age of a rock?
The evolutionary story of moths in England during industrialisation reveals, that 'evolution is apparently reversible'. Clarify this statement.
Complete the following diagram:
Complete the following chart:
I am the connecting link of annelida and arthropoda. What is my name?
Find odd one out:
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.
Explain natural selection with the example of industrial melanism.
