SCIENCE
PLANT KINGDOM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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In liverworts, mosses and ferns gametophytes are free living.
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Gymnosperms and some ferns are heterosporous.
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Sexual reproduction in Fucus, Volvox and Albugo is oogamous
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The sporophyte in liverworts is more elaborate than that is mosses.
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Detailed explanation-1: -Oogamous represents a type of sexual reproduction where male gametes are small in comparison to female gametes as the female gamete is large. The male gametes are motile and female gametes are nonmotile. This type of reproduction is shown by Fucus, Volvox, and Albugo.
Detailed explanation-2: -Reproduction by Spores Ferns and horsetails have two free-living generations: a diploid sporophyte generation (spore-producing plant) and. a haploid gametophyte generation (gamete-producing plant).
Detailed explanation-3: -V-Pinus is a monoecious plant, producing male and female cones every year. In Marchantia, plant body is strictly dioecious and isomorphic. Sex organs are found in specialised sexual receptacles called an thridiophore and archegoniophore.
Detailed explanation-4: -Heterosporous plants produce two kinds of spores-microspores and megaspores. Gymnosperms are heterosporous. The microspores and megaspores give rise to male and female gametophytes respectively. The spores produced are of different types and morphologically dissimilar.