Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Plant Kingdom question

2023 · Q28
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Biology
  4. /Plant Kingdom
  5. /2023 · Q28

Plant Kingdom question

2023 · Q28

NEETBiologyPlant KingdomMCQ+4 / −1

Given below are two statements : One labelled as Assertion A and the other labelled as Reason R:

Assertion A : The first stage of gametophyte in the life cycle of moss is protonema stage.

Reason R : Protonema develops directly from spores produced in capsule.

In the light of the above statements, choose the most appropriate answer from options given below:

  1. A
    Both A and R are correct but R is NOT the correct explanation of A
  2. B
    A is correct but R is not correct
  3. C
    A is not correct but R is correct
  4. D
    Both A and R are correct and R is the correct explanation of A
View written solutionFree

Correct answer: D

The life cycle of mosses consists of two stages: the gametophyte stage and the sporophyte stage.



Assertion A states : "The first stage of the gametophyte in the life cycle of moss is the protonema stage." This statement is correct. After a spore germinates, it forms a mass of green, branched, one-cell-thick filaments known as the protonema, which is indeed the first stage of the gametophyte generation in mosses.



Reason R states : "Protonema develops directly from spores produced in the capsule." This statement is also correct. The spores are produced in a capsule, which is the sporophyte part of the moss life cycle. When these spores are released and germinate, they grow into the protonema.



Not only are both statements correct, but Reason R provides a correct explanation for Assertion A.



Therefore, the answer is :



Option D : Both A and R are correct and R is the correct explanation of A.

PreviousNext

More from Plant Kingdom

  • Match List-I with List-II : Choose the correct answer from the options given below Includes table2022 · MCQ
  • Read the following statements and identify the characters related to the alga shown in the diagram : (a) It is a member of Chlorophyceae (b) Food is stored in the form of starch (c) It is monoecious plant showing oogonium and antheridium… Includes diagram2022 · MCQ
  • Match the plant with the kind of life cycle it exhibits: Choose the correct answer from the options given below : Includes table2022 · MCQ
  • Hydrocolloid carrageen is obtained form :2022 · MCQ
  • Which of the following is incorrectly matched?2022 · MCQ
  • Which of the following algae produce Carrageen?2021 · MCQ
  • Which of the following algae contains mannitol as reverse food material?2021 · MCQ
  • Gemmae are present in2021 · MCQ