NEET · Biology · STD 11 - 3. Plant kingdom
Given below are the stages in the life cycle of pteridophytes. Arrange the following stages in the correct sequence.
A. Prothallus stage
B. Meiosis in spore mother cells
C. Fertilisation
D. Formation of archegonia and antheridia in gametophyte.
E. Transfer of antherozoids to the archegonia in presence of water.
Choose the correct answer from the options given below:
- A \(B, A, D, E, C\)
- B \(B, A, E, C, D\)
- C \(D, E, C, A, B\)
- D \(E, D, C, B, A\)
Answer & Solution
Correct Answer
(A) \(B, A, D, E, C\)
Step-by-step Solution
Detailed explanation
In a pteridophytes life cycle, the correct sequence of stages will be given as follows:
B \(\rightarrow\) Meiosis in spore mother cells
A \(\rightarrow\) Prothallus stage
\(\mathrm{D} \rightarrow\) Formation of archegonia and antheridia in gametophyte
\(\mathrm{E} \rightarrow\) Transfer of antherozoids to the archegonia in presence of water
\(\mathrm{C} \rightarrow\) Fertilisation will occur
So, the correct sequence is \(\mathrm{B} \rightarrow \mathrm{A} \rightarrow \mathrm{D} \rightarrow \mathrm{E} \rightarrow \mathrm{C}\)
B \(\rightarrow\) Meiosis in spore mother cells
A \(\rightarrow\) Prothallus stage
\(\mathrm{D} \rightarrow\) Formation of archegonia and antheridia in gametophyte
\(\mathrm{E} \rightarrow\) Transfer of antherozoids to the archegonia in presence of water
\(\mathrm{C} \rightarrow\) Fertilisation will occur
So, the correct sequence is \(\mathrm{B} \rightarrow \mathrm{A} \rightarrow \mathrm{D} \rightarrow \mathrm{E} \rightarrow \mathrm{C}\)
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