The decaying process of C-14 occurs continuously in dead organisms only. - Science and Technology 2

Advertisements
Advertisements
MCQ
True or False

The decaying process of C-14 occurs continuously in dead organisms only.

Options

  • True

  • False

Advertisements

Solution

True

  Is there an error in this question or solution?
Chapter 1: Heredity and Evolution - Write true or false

APPEARS IN

RELATED QUESTIONS

Mammals : _________ : : Amphibia : Fishes


State the connecting links between Peripatus with Annelida and Arthopoda.


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 of the following pairs of two vegetables represent the correct homologous structures?

(A) Sweet potato and potato

(B) Sweet potato and tomato

(C) Carrot and potato

(D) Radish and carrot


Select two pairs from the following which exhibit divergent evolution. Give reasons for your answer.

(i) Forelimbs of cheetah and mammals

(ii) Flippers of dolphins and penguins

(iii) Wings of butterflies and birds

(iv) Forelimbs of whales and mammals


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?


Find out from newspapers and popular science articles any new fossil discoveries or controversies about evolution.


Try to trace the various components of human evolution (hint: brain size and function, skeletal structure, dietary preference, etc.)


Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :

Analogous organs


Explain with an example for the given, how the following provides evidence in favor of evolution in organisms :

Fossils


Name the scientists who Discovered the fossil of Australopithecus


Explain the evolution of giraffe's neck according to Lamarck's theory of evolution.


Name any two temporary embryonic structures in vertebrates which provide evidence for evolution.


What are homologous organs?


How do homologous organs help in providing evidence for organic evolution?


The forelimbs of a frog, a bird and a man show the same basic design (or basic structure) of bones. What name is given to such organs?

 

Out of bacteria, spider, fish and chimpanzee, which organism has a better body design in evolutionary terms? Give reason for your answer.


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


The organs P and Q of two animals have different structures but similar functions. On the other hand, the two organs R and S of two other animals have the same basic structure but different functions.
(a) What are the organs like P and Q known as?
(b) Name the organs like P and Q. Also name the animals which have such organs.
(c) What are the organs like R and S called?
(d) Name the organs like R and S. Also name the animals which have such organs.


Identify the following pairs as homologous and analogous organs:
(i) Sweet potato and potato
(ii) Eye of octopus and eye of mammals
(iii) Thorns of Bougainvillaea and tendrils of Cucurbits
(iv) Fore limbs of bat and whale


What do we call the degenerated or partially developed useless organs in living organisms? Enlist such organs in human body? How the same organs are useful in other animals?


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.


Write short notes based upon the information known to you.

Connecting link


Answer the following question.

Explain with suitable examples the importance of anatomical evidence in evolution.


Observe the picture and answer the following questions.
A) Which evidence of evolution is shown in the picture?
B) What can be proven with this proof?
C) Give one more example of evidence of evolution


Answer the following question.
Wisdom teeth : Vestigial organs :: Lungfish : ....................


With the help of diagrams, describe emasculation and bagging. 


Draw a labelled diagram of T.S. of a leaf showing Kranz anatomy. 


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 :


Explain any three molecular (genetic) evidences in favour of organic evolution.


Define fossils. 


Differentiate between connecting links and the missing links.


Define phylogeny.


Very short answer question.

What are homologous organs?


_____________ is a vestigial organ in human beings.


Find an odd one out.


Name the parts shown in the diagram.
Human jaw


Give scientific reason.

Vertebrates have slowly originated from invertebrates.


Give scientific reason.

Duck-billed platypus shows relationship with mammals.


Write a short note:

Embryological evidences


Enlist the evidences of evolution.


Define the evidence of evolution shown in the figure.


Observe the given images and answer the following questions.

  1. Which evolutionary evidence does it indicate?
  2. What does it prove?
  3. State another example of evolutionary evidence.

Observe the following images and answer the questions.

  1. Which evolutionary evidences are indicated in the given picture?
  2. How are they formed?
  3. Which method is used to measure their age or their time?

Biogenetic law states that ______.


The degenerated and non-functional organs found in an organism are called ______.


A human hand, a front leg of a cat, a front flipper of a whale and a bat’s wing look dissimilar and adapted for different functions. What is the name given to these organs?


How do you differentiate homologous organs from analogous organs?


Select vestigial organs from the following.


Homologous organs and vestigial organs are examples of ______ type of evidence in evolution.


Select the correct statement.


Select the CORRECT match.


Select the CORRECT set of homologous organs.


Which of these is not a vestigial organ in human beings?


Define vestigial organs


Homologous organs are:


Cucurbits do not develop thick and woody stem as they are:


Tendons and ligaments are examples of ______.


Palaeontological evidence for evolution refers to the ______.


Basic principles of embryonic development were pronounced by:


Study of fossils is ______.


Evolutionary convergence is the development of:


The process of mating of individuals, which are more closing related than the average of the population to which they belong is called ______.


The presence of gill slits, in the embryos of all vertebrates, supports the theory of ______.


Which is not a vestigial organ in a man?


Flippers of Penguins and Dolphins are examples of: 


The study of fossil evidence of evolution is called ______


Organs having similar functions but different origin and development are known as:


The bones of forelimbs of whale, bat, cheetah and man are similar in structure, because ______.


Appearance of antibiotic-resistant bacteria is an example of ______.


Did aquatic life forms get fossilised? If, yes where do we come across such fossils?


How do we compute the age of a living tree?


How do we compute the age of a fossil?


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:


Give a scientific reason.

Morphological evidences suggest that dog, sheep and wolf have a common origin.


What is the function of the appendix of our digestive system?


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.


Find the odd one out:


Explain natural selection with the example of industrial melanism.


Write avian characters of Archaeopteryx.


Write a note on the significance of Palaeontology.


Define the term:

Homologous organs


Industrial melanism was highlighted by ______.


Give examples of homologous organs and analogous organs in plants.


Give a definition of Palaeontology.


Pick the odd man out:


Share
Notifications



      Forgot password?
Use app×