MCQ
Synthesis of $m - RNA$ is
- ✓Transcription
- BTranslation
- CTranslocation
- DTransduction
✓
Answer
Correct option: A.
Transcription
a
(a)Transcription is the process of the formation of $RNA$ from $DNA$ template.
(a)Transcription is the process of the formation of $RNA$ from $DNA$ template.
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(A) The roots of gymnosperm are generally fibrous roots.
(B) In Cycas, small specialized roots called coralloid roots are associated with nitrogen fixing cyanobacteria.
(C) In pteridophytes genera like selaginella and salvinia are homosporous.
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(H) The angiosperms are an exceptionally large group of plants occurring in wide range of habitats.
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(J) The ovules develop into seeds and the ovaries develop into fruit after fertilization.
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(M) In bryophytes multicellular gametophyte is totally/partially dependent on sporophyte for anchorage and nutrition.
(N) Most algal genera are haplontic, some of them such as Ectocarpus, Polysiphonia, kelps are diplontic. Fucus, an alga is hepto diplontic.
(0) All pteridophytes show haplo-diplontic life cycle.
Choose the correct option given below :-
(A) The roots of gymnosperm are generally fibrous roots.
(B) In Cycas, small specialized roots called coralloid roots are associated with nitrogen fixing cyanobacteria.
(C) In pteridophytes genera like selaginella and salvinia are homosporous.
(D) Majority of pteridophytes are hetero sporous.
(E) In gymnosperms, two kinds of spores produced within sporangia that are bome on sporophylls are arranged spirally along an axis to form lax or compact strobili or cones.
(F) In gymnosperms the cones bearing megasporophylls with ovules or megasporangia are called macrosporangiate or female strobili.
(G) The megaspore mother cell is differentiated from one of the cells of the nucellus in gymnosperms.
(H) The angiosperms are an exceptionally large group of plants occurring in wide range of habitats.
(I) The male gamete fuses with diploid secondary nucleus to produce the triploid primary endosperm nucleus (PEN) in angiosperm.
(J) The ovules develop into seeds and the ovaries develop into fruit after fertilization.
(K) The diploid sporophyte is the dominant, photosynthetic, dependent phase of the plant. The gametophytic phase is represented by single to few-celled haploid gametophyte. This kind of life cycle is termed as diplontic.
(L) Meiosis in zygote results in the formation of haploid spores in haplontic life cycle.
(M) In bryophytes multicellular gametophyte is totally/partially dependent on sporophyte for anchorage and nutrition.
(N) Most algal genera are haplontic, some of them such as Ectocarpus, Polysiphonia, kelps are diplontic. Fucus, an alga is hepto diplontic.
(0) All pteridophytes show haplo-diplontic life cycle.
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