Q. No.Choose the incorrect match from following:-
1.
Cycas-branched stem.
2.
Salvinia-heterosporous sporophyte.
3.
Marchantia-Elaters.
4.
Chlorella-used by space travellers.
Assertion: Seeds are formed in Gymnosperms.
Reason: Female gametophyte is retained within megasporangium in Gymnosperms.
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Find out the incorrect statement about the Rhodophyceae.
| 1. | Majority are marine with greater concentrations found in the warmer areas. |
| 2. | They are also found at great depths of oceans where relatively little light penetrates. |
| 3. | Usually reproduce vegetatively by fragmentation. |
| 4. | They reproduce asexually by biflagellate zoospores. |
Coralloid roots of gymnosperms are/have
| 1. | Irregular and possess large number of roots hairs. |
| 2. | Symbiotic association with Rhizobium. |
| 3. | Symbiotic association with N2 - fixing cyanobacteria. |
| 4. | VAM |
In pteridophytes, gametophyte that develops in the homosporous species is usually
| 1. | Monoecious and has events, precursor to the seed habit. |
| 2. | Dioecious and does not lead to seed habit. |
| 3. | Monoecious and does not lead to seed habit. |
| 4. | Dioecious and has events, precursor to the seed habit. |
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)
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
(1) (A) – (iii), (B) – (i), (C) – (iv), (D) – (ii)
(2) (A) – (i), (B) – (iii), (C) – (ii), (D) – (iv)
(3) (A) – (iii), (B) – (i), (C) – (ii), (D) – (iv)
(4) (A) – (i), (B) – (iv), (C) – (iii), (D) – (ii)
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)
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. |
Gametophyte of Bryophyte is
1. Green and vascular.
2. Independent, multicellular.
3. Dependent on sporophyte.
4. Foliose in nature.
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