Sexual reproduction takes place through the fusion of two gametes. These gametes can be flagellated and similar in size (as in Ulothrix) or non-flagellated (non-motile) but similar in size (as in Spirogyra). Such reproduction is called isogamous.
NEET UG 2015 — Botany Plant Kingdom
Isogamous reproduction and flagellated gametes can be observed in
Held on 30 Apr 2015 · Verified 9 Jul 2026.
Polysiphonia
Fucus
Ulothrix
Spirogyra
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The correct sequence of events in the life cycle of bryophytes is A. Fusion of antherozoid with egg. B. Attachment of gametophyte to substratum. C. Reduction division to produce haploid spores. D. Formation of sporophyte. E. Release of antherozoids into water. Choose the correct answer from the options given below :
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:
Which one of the following is the characteristic feature of gymnosperms?
Match List-I with List-II. $\begin{array}{|l|l|l|l|}\hline & \text{List-I} & & \text{List-II} \\\hline \text{A}. & \text{Pteridophyte} & \text{(I)} & \text{Salvia} \\\hline \text{B.} & \text{Bryophyte} & \text{(II)} & \text{Ginkgo} \\\hline \text{C.} & \text{Angiosperm} & \text{(III)} & \text{Polytrichum} \\\hline \text{D.} & \text{Gymnosperm} & \text{(IV)} & \text{Salvinia} \\\hline\end{array}$ Choose the option with all correct matches.
In bryophytes, the gemmae help in which one of the following?
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