Home
Class 12
BIOLOGY
A: No individual is immortal except one ...

A: No individual is immortal except one celled organisms
R: A few number of plants and animals species have existed of earth and do not die because of budding.

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)

B

If both Assertion & Reason are true and the reason is not the correct explanation of the assertion, then mark (2)

C

If Assertion is true statements but Reason is false then mark (3)

D

If both Assertion and Reason are false statements, then mark (4)

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Understanding the Assertion**: The assertion states that "No individual is immortal except one-celled organisms." This implies that all multicellular organisms have a finite lifespan and will eventually die, while unicellular organisms (like bacteria and amoeba) are considered immortal due to their mode of reproduction. 2. **Analyzing the Reason**: The reason given is that "A few number of plants and animal species have existed on earth and do not die because of budding." Budding is a form of asexual reproduction where a new organism develops from an outgrowth or bud on the parent organism. 3. **Evaluating the Truth of the Assertion**: The assertion is true. Unicellular organisms reproduce asexually through processes like binary fission, where the parent cell divides into two identical daughter cells. This process does not create a new individual in the traditional sense, allowing unicellular organisms to be considered immortal. 4. **Evaluating the Truth of the Reason**: The reason is false. While budding is indeed a form of asexual reproduction seen in certain plants and animals (like hydras and corals), it does not imply that these organisms do not die. All organisms, including those that reproduce by budding, have a lifespan and will eventually die. 5. **Conclusion**: Since the assertion is true and the reason is false, the correct answer is that the assertion is true and the reason is false. ### Final Answer: Assertion is true, Reason is false.
Promotional Banner

Topper's Solved these Questions

  • REPRODUCTION IN ORGANISMS

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT SECTION-C PREVIOUS YEARS QUESTION|25 Videos

  • PRINCIPLES OF INHERITANCE AND VARIATION

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION-D) Assertion-Reason Type Questions|20 Videos

  • REPRODUCTIVE HEALTH

    AAKASH INSTITUTE ENGLISH|Exercise Sectoin -D Assertion - Reason Type Questions|22 Videos

Similar Questions

Explore conceptually related problems

No individual is immortal then it is wondering that vast number of plant and animal species have existed on earth for several thousands of years. There must be some processes in living organisms that ensure this continuity. This process is called

Animal cells have more mitochondria than plant cells because

Find out the correct option w.r.t. number of plant and animal species recorded in India.

Read the following statement and find out the incorrect statement. (a). Asexual reproduction is common among single-celled organisms, and in plants and animals with relatively complex organisations. (b) In yeast, the division is unequal and small buds are produced that remain attached initially to the parent cell which eventually gets separated and mature into yeast organism (cells). (c). vegetative reproduction is also a type of asexual reproduction. (d) While in animals and other simple organisms the term vegetative reproduction is used unambiguously, in plants the term asexual reproduction is frequently used. (e) Water hyacinth is also called 'Terror of Bengal'

Assertion : The fungi are widespread in distribution and they even live on inside other plants and animals. Reason : Fungi are able to grow anywhere on land, water or on other organisms because they have a variety of pigments, including chlorophyll, carotenoids, fucoxanthin and phycoerythrin.

[A]: Evolution is descent with modification. [R]: Evolution is derivation of new species of plants and animals from those existed in past.

A particular species of animals had three coat colors: White, yellow and black. A population of this species in Africa has more number of yellow animals and less number of white and black animals. After hundreds of years, the species evolved having very few yellow animals. The white and black animals were almost similar in quantity. The type of natural selection seen in this example is

Read the following statements regarding living organisms . How many of the following statements are incorrect ? (i) As we go higher from species to kingdom, the number of common characteristics goes on increasing . (ii) Lower the taxa more are the characteristics that the members within the taxon share. (iii) Lower the category , greater is the difficulty of determining the relationship to other taxa at the same level. (iv) All organisms , including those in plants and animal kingdom , have sub - species as the lowest obligate category

Consider the following statements . A. The productivity and distribution of plants have nothing to do with water. B. Next temperature , water is the most important factor influence the life of organisms. C. Mammals from colder climates generally have longer ears and limbs to minimize heat loss. D. Life on Earth originated in water and is unsustainable without water. Of the above statements:

105 goats, 140 donkeys and 175 cows have to be taken across a river. There is only one boat which will have to make many trips in order to do so. The lazy boatman has his own conditions for transporting them. He insists that he will take the same number of animals in every trip and they have to be of the same kind. He will naturally like to take the largest possible number each time. Can you tell how many animals went in each trip?

AAKASH INSTITUTE ENGLISH-REPRODUCTION IN ORGANISMS -ASSIGNMENT SECTION-D ASSERTION - REASON TYPE QUESTION IN THE FOLLOWING QUESTIONS, A STATEMENT OF ASSERTION (A) IS FOLLOWED A STATEMENT OF REASON (R ).
  1. A : At the end of juvenility, the organism develops the capacity to re...

    Text Solution

    |

  2. A: Reproduction is a biological process of giving rise to young ones ...

    Text Solution

    |

  3. A: Endogamy is common is majority of animals R: Fusing gametes are q...

    Text Solution

    |

  4. A: The higher organisms must evolve a special mechanism for gamete tra...

    Text Solution

    |

  5. A: Air layering does not produce a composite plant. R: Stock and sci...

    Text Solution

    |

  6. A : Most of the species of Chara are monoecious but show cross fertili...

    Text Solution

    |

  7. A: Multiplication occurs rapidly with equal rate in apomixis as well a...

    Text Solution

    |

  8. A : Fucus, a brown alga shows oogamy. R: Female gamete is quite larg...

    Text Solution

    |

  9. A : Runner, tuber, sucker, offset etc. are vegetative propagules. R:...

    Text Solution

    |

  10. A : Cereals are monocarpic plants. R: They have distinct juvenile, r...

    Text Solution

    |

  11. Assertion: In an organism, male gametes are always produced in large n...

    Text Solution

    |

  12. A: An Volvox, heterogametes are formed in sexual life cycle. R: Non-...

    Text Solution

    |

  13. A: Zygote is the first cell of the new ganeration in all sexually repr...

    Text Solution

    |

  14. A: Water hyacinth is one of the most invasive weed. R: It increases ...

    Text Solution

    |

  15. A: No individual is immortal except one celled organisms R: A few nu...

    Text Solution

    |