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Question

Which of the following is the correct sequence of three steps in the sexual cycle of fungi?
  1. Karyogamy, plasmogamy and meiosis
  2. Meiosis, karyogamy and plasmogamy
  3. Meiosis, plasmogamy and karyogamy
  4. Plasmogamy, karyogamy and meiosis

A
Karyogamy, plasmogamy and meiosis
B
Meiosis, plasmogamy and karyogamy
C
Plasmogamy, karyogamy and meiosis
D
Meiosis, karyogamy and plasmogamy
Solution
Verified by Toppr

The sexual cycle of fungi involves the following three steps:
1. The protoplasm of two motile or non-motile gametes fuses by the process of plasmogamy. It is fusion of two haploid cells without nuclear fusion.
2. Karyogamy involves fusion of nuclei of the two gametes.
3. Meiosis in zygote results in haploid spores.

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Q1

Question 9

With respect to fungal sexual cycle, choose the sequence of events.

(a) Karyogamy, Plasmogamy and Meiosis

(b) Meiosis, Plasmogamy and Karyogamy

(c)Plasmogamy, Karyogamy and Meiosis

(d) Meiosis, Karyogamy and Plasmogamy

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Q2
A type of life cycle in which plasmogamy, karyogamy, haplodization take place but not at specific place in life cycle of an organism is called as
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Q3
Given below are assertions and reason. Point out:
A. If both are true with reason being the correct explanation
B. Both true but reason not correct explanation
C. Assertion is true but reason is wrong
D. Both assertion and reason are wrong

Assertion: As we go from the lower to the higher forms of the fungal members, there is a decrease in the complexity of the sexual apparatus.
Reason: Sexual reproduction involves plasmogamy, karyogamy and meiosis.
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Q4
Given below are assertions and reason. Point out:
A. If both are true with reason being the correct explanation
B. Both true but reason not correct explanation
C. Assertion is true but reason is wrong
D. Both assertion and reason are wrong

Assertion: As we go from the lower to the higher forms of the fungal members, there is a decrease in the complexity of the sexual apparatus.
Reason: Sexual reproduction involves plasmogamy, karyogamy and meiosis.
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Q5
Site of karyogamy and meiosis in sac fungi is
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