Q. No.The members of phaeophyceae are characterized by all, except
1.
Presence of chlorophyll a, c and fucoxanthin pigments.
2.
Production of pear-shaped and biflagellated asexual spores.
3.
Production of pyriform gametes that bear laterally attached flagella.
4.
Their occurrence, mostly in fresh water habitats.
| Chlamydomonas, Chlorella, Volvox, Ulothrix, Fucus, Dictyota, Polysiphonia, Gelidium, Acetabularia, Laminaria |
Out of these 10 organisms, how many belong to the classes Chlorophyceae, Phaeophyceae and Rhodophyceae, respectively?
1. 4, 3, 3
2. 4, 4, 2
3. 5, 3, 2
4. 6, 2, 2
Gametophyte of Bryophyte is
1. Green and vascular.
2. Independent, multicellular.
3. Dependent on sporophyte.
4. Foliose in nature.
Select incorrect option with respect to given diagram
2. Aquatic fern.
3. Belongs to class Pteropsida.
4. Gametophytic main plant body.
In the following diagram A, B, C and D
represent
1. A - Seta, B - Leaves, C- Rhizoids, D - Capsule
2. A - Leaf, B - Rhizoids, C- Scales, D - Root hair
3. A - Capsule, B - Seta, C- Leaves, D - Rhizoids
4. A - Capsule, B - Foot, C- Leaves, D - Rhizoids
In Pteridophytes reduction division occurs
during
1. spore formation
2. gamete formation
3. sporophyte formation
4. gametophyte germination
Read the following statements and select the incorrect ones
| (a) | Mosses have an elaborate mechanism of spore dispersal. |
| (b) | In liverworts, the haploid free living sporophyte is formed by spore germination. |
| (c) | Vegetative reproduction in Polytrichum occurs by budding in the secondary protenema. |
| (d) | Marchantia is a heterosporous bryophyte. |
| (e) | Growth of bog moss ultimately fills ponds and lakes with soil |
1. (a), (b) and (c)
2. (d) and (e) only
3. (b) and (d) only
4. All except (a)
Match the classes of pteridophyte given in column-I with their respective members given in column-II
| Column I | Column II | ||
| (a) | Psilopsida | (i) | Selaginella |
| (b) | Lycopsida | (ii) | Adiantum |
| (c) | Pteropsida | (iii) | Psilotum |
| (d) | Sphenopsida | (iv) | Equisetum |
Select the correct answer from the following
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (i) | (iv) | (ii) |
| 2. | (i) | (iii) | (ii) | (iv) |
| 3. | (iii) | (i) | (ii) | (iv) |
| 4. | (i) | (iv) | (iii) | (ii) |
Read the following statements and select the option with correct statements
| (a) | In Wolfia, the highly reduced female gametophyte present within ovule, is embryo sac. |
| (b) | The ploidy level of endosperm in Cycas and Eucalyptus is triploid. |
| (c) | Azolla is a water fern. |
| (d) | Majority of the red algae are marine with greater abundance in the warmer areas. |
1. (a) and (b) only
2. (b) and (c) only
3. (a), (b) and (c)
4. (a), (c) and (d)
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