A prothallus is
A prothallus is
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(a) a structure in pteridophytes formed before the thallus develops (b) a sporophytic free living structure formed in pteridophytes (c) a gametophyte free living structure formed in pteridophytes (d) […]
A prothallus is
Options
(a) a structure in pteridophytes formed before the thallus develops (b) a sporophytic free living structure formed in pteridophytes (c) a gametophyte free living structure formed in pteridophytes (d) […]
Protonema is
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(a) haploid and is found in mosses (b) diploid and is found in liverworts (c) diploid and iss found in pteridophytes (d) haploid and is found pteridophytes
Correct Answer:
haploid […]
Which one of the following features is common in silver, fish, scorpion, dragonfly and prawn
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(a) Three pairs of legs and segmented body (b) Chitinous cuticle and two pairs of antennae (c) […]
The group of animals, which have radial symmetry are
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(a) Choelenterata,Mollusca,Annelida (b) Ctenophora,Arthropoda,Echinodermata (c) Coelenterata,Ctenophora,Echinodermata (d) Echinodermata,Hemichordata,Cordata
Correct Answer:
Coelenterata,Ctenophora,Echinodermata
Explanation:
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Conifers differ from grasses in the
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(a) production of seeds from ovules (b) lack of xylem tracheids (c) absence of pollen tubes (d) formation of endosperm before fertilizatio
Correct Answer:
formation of […]
The body of rohu fish is covered by
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(a) cycloid scale, but the tail of homoceral (b) placoid scale,but the tail hwteroceral (c) cyclois scale,but the tail of heteroceral (d) placoid scale,but […]
In bryophytes, the male sex organ consist of
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(a) some what elongated swollen ac borne on a more or less slender stalk (b) flask shaped structure the swollen basal portion of which […]
Which one of the following statements is wrong
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(a) Algin and carragen are products of algae (b) Agar-agar is obtained from Gelidium and Gracilaria (c) chlorella and spirulina are uses as space […]
Fungai resemble with algae except
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(a) presence of unicellur swx organs (b) presence of thalloid plant body (c) reserve food material is glycogen (d) there is no embryo formation after gametic union
Mosses and ferns are found in moist and shady places because both
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(a) a require presence of water for fertilization (b) do not need sunlight for photosynthesis (c) depend for their nutrition […]
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