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Q. No.Which one of the following structures is haploid in its ploidy level?
1. Primary Endospore Nucleus
2. Microspore Mother cell
3. Protonemal cell of a moss
4. Primary endosperm nucleus in dicot
1. Primary Endospore Nucleus
2. Microspore Mother cell
3. Protonemal cell of a moss
4. Primary endosperm nucleus in dicot
Subtopic: Miscellaneous |
75%
Level 2: 60%+
NEET - 2022
Hints
Arrange the following in the correct sequence, from earliest to most recent, in which these plant traits originated.
i. sporophyte dominance, gametophyte independence
ii. sporophyte dominance, gametophyte dependence
iii. gametophyte dominance, sporophyte dependence
1. i → ii → iii
2. ii → iii → i
3. ii → i → iii
4. iii → i → ii
i. sporophyte dominance, gametophyte independence
ii. sporophyte dominance, gametophyte dependence
iii. gametophyte dominance, sporophyte dependence
1. i → ii → iii
2. ii → iii → i
3. ii → i → iii
4. iii → i → ii
72%
Level 2: 60%+
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Beginning with the germination of a moss spore, what is the sequence of structures that develop after germination?
| i. | embryo |
| ii. | gametes |
| iii. | sporophyte |
| iv. | protonema |
| v. | gametophore |
| 1. | iv →i → iii → v → ii |
| 2. | iv → iii → v → ii → i |
| 3. | iv → v → ii → i → iii |
| 4. | iii → iv → v → ii → i |
Subtopic: Bryophytes | Bryophytes (Anthoceropsida) |
58%
Level 3: 35%-60%
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| Assertion(A): | Mosses are evolved from algae. |
| Reason(R): | Protonema of mosses is similar to some green algae. |
In the following questions a statement of assertion (A) is followed by a statement of reason (R).
| 1. | Both (A) & (R) are true and (R) is the correct explanation of (A) |
| 2. | Both (A) & (R) are true but (R) is not the correct explanation of (A) |
| 3. | (A) is true statement but (R) is false |
| 4. | Both (A) and (R) are false statements |
Subtopic: Algae | Bryophytes |
54%
Level 3: 35%-60%
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Hints
Which of the following is true of the life cycle of mosses?
| 1. | The haploid generation grows on the sporophyte generation |
| 2. | Spores are primarily distributed by water currents |
| 3. | Antheridia and archegonia are produced by gametophytes |
| 4. | The sporophyte generation is dominant |
Subtopic: Bryophytes |
59%
Level 3: 35%-60%
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All of the following cellular structures are functionally important in cells of the gametophytes of both angiosperms and gymnosperms except
1. haploid nuclei
2. mitochondria
3. cell walls
4. chloroplasts
1. haploid nuclei
2. mitochondria
3. cell walls
4. chloroplasts
Level 3: 35%-60%
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Hints
Which of the following is an example of alternation of generations?
1. A grandparent and grandchild each have dark hair, but the parent has blond hair.
2. A diploid plant (sporophyte) produces, by meiosis, a spore that gives rise to a multicellular, haploid pollen grain (gametophyte).
3. A diploid animal produces gametes by meiosis, and the gametes undergo fertilization to produce a diploid zygote.
4. A haploid mushroom produces gametes by mitosis, and the gametes undergo fertilization, which is immediately followed by meiosis
1. A grandparent and grandchild each have dark hair, but the parent has blond hair.
2. A diploid plant (sporophyte) produces, by meiosis, a spore that gives rise to a multicellular, haploid pollen grain (gametophyte).
3. A diploid animal produces gametes by meiosis, and the gametes undergo fertilization to produce a diploid zygote.
4. A haploid mushroom produces gametes by mitosis, and the gametes undergo fertilization, which is immediately followed by meiosis
73%
Level 2: 60%+
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Which of the following first terrestrial plants possess xylem and phloem and have sporophyte as a main plant body ?
1. Selaginella
2. Sphagnum
3. Pinus
4. Eucalyptus
1. Selaginella
2. Sphagnum
3. Pinus
4. Eucalyptus
Subtopic: Pteridophytes |
84%
Level 1: 80%+
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Match List I with List II
Choose the correct answer from the options given below
1. A-(I), B-(II), C-(III), D-(IV)
2. A-(II), B-(I), C-(IV), D-(III)
3. A-(IV), B-(III), C-(I), D-(II)
4. A-(III), B-(IV), C-(II), D-(I)
| List I | List II |
| A. Colonial algae | I. Cycas |
| B. Agar | II. Sphagnum |
| C. Coralloid root | III. Gelidium |
| D. Peat | IV. Volvox |
1. A-(I), B-(II), C-(III), D-(IV)
2. A-(II), B-(I), C-(IV), D-(III)
3. A-(IV), B-(III), C-(I), D-(II)
4. A-(III), B-(IV), C-(II), D-(I)
Subtopic: Rhodophyceae: Red Algae and Importance of Algae | Bryophytes | Chlorophyceae: Green Algae | Gymnosperms |
96%
Level 1: 80%+
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"Triple fusion" occurs in which group of plants?
1. Gymnosperm
2. Angiosperm
3. Pteridophyte
4. Bryophyte
1. Gymnosperm
2. Angiosperm
3. Pteridophyte
4. Bryophyte
94%
Level 1: 80%+
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