The life cycle is not haplo-diplontic in:

1. Bryophytes

2. Pteridophytes

3. Polysiphonia

4. Fucus

Subtopic:  Life Cycle Patterns in Plants (OLD NCERT) |
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Both bryophytes and pteridophytes:

1. are vascular cryptogams

2. have a dominant sporophyte

3. reproduce only sexually

4. are haplo-diplontic

Subtopic:  Life Cycle Patterns in Plants (OLD NCERT) |
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The life cycle pattern shown in the given diagram is not seen  in:

1. Chlamydomanas

2. Spirogyra

3. Volvox

4. Ectocarpus

Subtopic:  Life Cycle Patterns in Plants (OLD NCERT) |
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Zygotic meiosis is characteristic of

(1) Marchantia

(2) Fucus

(3) Funaria

(4) Chlamydomonas

Subtopic:  Life Cycle Patterns in Plants (OLD NCERT) |
 55%
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NEET - 2017
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Double fertilisation is exhibited by

(1) gymnosperms

(2) algae

(3) fungi

(4) angiosperms

Subtopic:  General Account of Angiosperms (OLD NCERT) |
 93%
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NEET - 2017
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Life cycle of Ectocarpus and Fucus respectively are

(1) Haplontic, Diplontic

(2) Diplontic, Haplodiplontic

(3) Haplodiplontic, Diplontic

(4) Haplodiplontic, Haplontic

Subtopic:  Life Cycle Patterns in Plants (OLD NCERT) |
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NEET - 2017
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The world's tallest (angiosperm) flowering tree is

(1) Sequoia

(2) Eucalyptus

(3) Pinus

(4) Cedrus

Subtopic:  General Account of Angiosperms (OLD NCERT) |
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Occurrence of triploid (3n) primary endosperm nucleus is a characteristic feature of

(1) Algae

(2) Gymnosperms

(3) Angiosperms

(4) Bryophytes

Subtopic:  General Account of Angiosperms (OLD NCERT) |
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The diploid sporphyte is represented by a dominant, independent, photoshynthetic, vascular plant body. It alternates with multicellular, saprophytic/autotrophic, independent but short-lived haploid gametophyte. This type of pattern is exhibited by

1. Bryophytes (Sphagnum, Polytrichum).

2.Pteridophytes (Selaginella, Lycopodium).

3. Most of the algal genera (Fucus, Chara, Polysiphonia).

4. Seed plants (gymnosperms and antiosperms).

Subtopic:  Life Cycle Patterns in Plants (OLD NCERT) |
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The type of life-cycle in which there is no free-living sporophytes and the dominant, photosynthetic phase in such plants is the free-living gametophyte. We are talking about

1.Haplontic life cycle shown in Volvox and some species of Chlamydomonas.

2.Diplontic life cycle as shown in seed-bearing plants.

3.Haplo-diplontic life cycle as shown in bryophytes and pteridophytes.

<p">4.Haplo-diplontic life cycle as shown in Kelps.

Subtopic:  Life Cycle Patterns in Plants (OLD NCERT) |
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