Chapter 3: Problem 21
Marine algae used as food are (a) Laminaria (b) Sargassum (c) Porphyra (d) All of these
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Chapter 3: Problem 21
Marine algae used as food are (a) Laminaria (b) Sargassum (c) Porphyra (d) All of these
These are the key concepts you need to understand to accurately answer the question.
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Pear-shaped gametes are found in (a) Ectocarpus, dictyota and fucus (b) Ulothrix, spirogyra, and ectocarpus (c) Ectocarpus, gelidium and gracilaria (d) None of these
Pteridophyte having microphylls is (a) Ferns (b) Psilotum (c) Selaginella (d) All of these
The organism which contain chlorophyll 'a'and 'b' cup-shaped chloroplast and is unicellular is (a) Spirogyra (b) Chlamydomonas (c) Volvox (d) Ulothrix
In double fertilization (a) Male gamete fuses with egg cell to form zygote. (b) Male gamete fuses with diploid endosperm nucleus to produce triploid primary endosperm nucleus. (c) Both (a) and (b) (d) Fertilization takes place in two plants simultaneously.
Which of the following are correct about pteridophytes? I. The sporophytes bear sporangia that are formed on the sporophylls. II. They are frequently grown as ornamentals. III. They are the first terrestrial plants to forms seeds. IV. Vascular tissues are absent in pteridophytes. V. some species flourish well in sandy soil conditions. (a) \(\mathrm{V}\) and IV (b) I, II and IV (c) III, IV and \(\mathrm{V}\) (d) I and II
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