(b) Plasmogamy is the first stage of sexual reproduction in which the cytoplasm of two sex cells fuse with each other. The nuclei of sex cells come close to each other but do not fuse. Thus, the resulting cell becomes binucleate or dikaryon.
NCERT Page-23/N-17
BIOLOGICAL CLASSIFICATION(NCERT)
285853
Fungi are filamentous with the exception of" $X$ " which is unicellular. Identify $X$.
1 Yeast
2 Albugo
3 Mucor
4 Lichen
Explanation:
(a) Yeast being a unicellular fungus does not show filamentous nature. It is a microscopic fungus consisting of a single oval cell that reproduces by budding.
NCERT Page-22 / N-17
BIOLOGICAL CLASSIFICATION(NCERT)
285854
Yeast is not included in protozoans but are placed fungi because
1 it has no chlorophyll.
2 yeast reproduce by fungal methods
3 it has eukaryotic organization.
4 cell wallis made up of cellulose and reserve food material is starch.
Explanation:
(b) The plant body of fungi typically consists of branched and filamentous hyphae, which form a net like structure, known as mycelium fungi reproduce asexually by fragmentation, budding or producing spores.
NCERT Page-22 / N-17
BIOLOGICAL CLASSIFICATION(NCERT)
285855
Select the correct match from the given option.
1 Occurrence ofdikaryotic stage - ascomycetes and basidiomycetes.
2 Saprophytes - They are autotrophic and absorb soluble organic matter from dead substrates.
3 Vegetative mean of reproduction in fungi fragmentation, budding andsporangiophores,
4 Steps involved in asexual cycle offungl plasmogamy, karyogamy and meiosis in zygote resulting in haploid spores.
Explanation:
(a) Saprophytes are heterotrophic and absorb soluble organic matter from dead substrates. Vegetative mean of reproduction in fungi are fragmentation, budding and fission. Steps involved in sexual cycle of fungi are plasmogamy, karyogamy and meiosis in zygote resulting in haploid spores.
(b) Plasmogamy is the first stage of sexual reproduction in which the cytoplasm of two sex cells fuse with each other. The nuclei of sex cells come close to each other but do not fuse. Thus, the resulting cell becomes binucleate or dikaryon.
NCERT Page-23/N-17
BIOLOGICAL CLASSIFICATION(NCERT)
285853
Fungi are filamentous with the exception of" $X$ " which is unicellular. Identify $X$.
1 Yeast
2 Albugo
3 Mucor
4 Lichen
Explanation:
(a) Yeast being a unicellular fungus does not show filamentous nature. It is a microscopic fungus consisting of a single oval cell that reproduces by budding.
NCERT Page-22 / N-17
BIOLOGICAL CLASSIFICATION(NCERT)
285854
Yeast is not included in protozoans but are placed fungi because
1 it has no chlorophyll.
2 yeast reproduce by fungal methods
3 it has eukaryotic organization.
4 cell wallis made up of cellulose and reserve food material is starch.
Explanation:
(b) The plant body of fungi typically consists of branched and filamentous hyphae, which form a net like structure, known as mycelium fungi reproduce asexually by fragmentation, budding or producing spores.
NCERT Page-22 / N-17
BIOLOGICAL CLASSIFICATION(NCERT)
285855
Select the correct match from the given option.
1 Occurrence ofdikaryotic stage - ascomycetes and basidiomycetes.
2 Saprophytes - They are autotrophic and absorb soluble organic matter from dead substrates.
3 Vegetative mean of reproduction in fungi fragmentation, budding andsporangiophores,
4 Steps involved in asexual cycle offungl plasmogamy, karyogamy and meiosis in zygote resulting in haploid spores.
Explanation:
(a) Saprophytes are heterotrophic and absorb soluble organic matter from dead substrates. Vegetative mean of reproduction in fungi are fragmentation, budding and fission. Steps involved in sexual cycle of fungi are plasmogamy, karyogamy and meiosis in zygote resulting in haploid spores.
(b) Plasmogamy is the first stage of sexual reproduction in which the cytoplasm of two sex cells fuse with each other. The nuclei of sex cells come close to each other but do not fuse. Thus, the resulting cell becomes binucleate or dikaryon.
NCERT Page-23/N-17
BIOLOGICAL CLASSIFICATION(NCERT)
285853
Fungi are filamentous with the exception of" $X$ " which is unicellular. Identify $X$.
1 Yeast
2 Albugo
3 Mucor
4 Lichen
Explanation:
(a) Yeast being a unicellular fungus does not show filamentous nature. It is a microscopic fungus consisting of a single oval cell that reproduces by budding.
NCERT Page-22 / N-17
BIOLOGICAL CLASSIFICATION(NCERT)
285854
Yeast is not included in protozoans but are placed fungi because
1 it has no chlorophyll.
2 yeast reproduce by fungal methods
3 it has eukaryotic organization.
4 cell wallis made up of cellulose and reserve food material is starch.
Explanation:
(b) The plant body of fungi typically consists of branched and filamentous hyphae, which form a net like structure, known as mycelium fungi reproduce asexually by fragmentation, budding or producing spores.
NCERT Page-22 / N-17
BIOLOGICAL CLASSIFICATION(NCERT)
285855
Select the correct match from the given option.
1 Occurrence ofdikaryotic stage - ascomycetes and basidiomycetes.
2 Saprophytes - They are autotrophic and absorb soluble organic matter from dead substrates.
3 Vegetative mean of reproduction in fungi fragmentation, budding andsporangiophores,
4 Steps involved in asexual cycle offungl plasmogamy, karyogamy and meiosis in zygote resulting in haploid spores.
Explanation:
(a) Saprophytes are heterotrophic and absorb soluble organic matter from dead substrates. Vegetative mean of reproduction in fungi are fragmentation, budding and fission. Steps involved in sexual cycle of fungi are plasmogamy, karyogamy and meiosis in zygote resulting in haploid spores.
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BIOLOGICAL CLASSIFICATION(NCERT)
285852
Plasmogamy is the fusion of
1 two haploid cells including their nuclei.
2 two haploid cells without nuclear fusion.
3 sperm and egg.
4 sperm and two polar nuclei.
Explanation:
(b) Plasmogamy is the first stage of sexual reproduction in which the cytoplasm of two sex cells fuse with each other. The nuclei of sex cells come close to each other but do not fuse. Thus, the resulting cell becomes binucleate or dikaryon.
NCERT Page-23/N-17
BIOLOGICAL CLASSIFICATION(NCERT)
285853
Fungi are filamentous with the exception of" $X$ " which is unicellular. Identify $X$.
1 Yeast
2 Albugo
3 Mucor
4 Lichen
Explanation:
(a) Yeast being a unicellular fungus does not show filamentous nature. It is a microscopic fungus consisting of a single oval cell that reproduces by budding.
NCERT Page-22 / N-17
BIOLOGICAL CLASSIFICATION(NCERT)
285854
Yeast is not included in protozoans but are placed fungi because
1 it has no chlorophyll.
2 yeast reproduce by fungal methods
3 it has eukaryotic organization.
4 cell wallis made up of cellulose and reserve food material is starch.
Explanation:
(b) The plant body of fungi typically consists of branched and filamentous hyphae, which form a net like structure, known as mycelium fungi reproduce asexually by fragmentation, budding or producing spores.
NCERT Page-22 / N-17
BIOLOGICAL CLASSIFICATION(NCERT)
285855
Select the correct match from the given option.
1 Occurrence ofdikaryotic stage - ascomycetes and basidiomycetes.
2 Saprophytes - They are autotrophic and absorb soluble organic matter from dead substrates.
3 Vegetative mean of reproduction in fungi fragmentation, budding andsporangiophores,
4 Steps involved in asexual cycle offungl plasmogamy, karyogamy and meiosis in zygote resulting in haploid spores.
Explanation:
(a) Saprophytes are heterotrophic and absorb soluble organic matter from dead substrates. Vegetative mean of reproduction in fungi are fragmentation, budding and fission. Steps involved in sexual cycle of fungi are plasmogamy, karyogamy and meiosis in zygote resulting in haploid spores.
