Q. No.Classification of organisms based on measurable similarities and differences rather than genetic makeup and evolutionary descent is called phenetics. What type of biological classification system does it belong to?
1. Artificial 2. Phylogenetic 3. Cytotaxonomy 4. Numerical taxonomy
In pteridophytes, antheridium are present in :-
1. Leafy gametophyte
2. Prothallus
3. Sporophyll
4. Protonema
If you are asked to classify the various algae into distinct groups, which of the following character would you choose?
| 1. | Types of pigments present in the cell |
| 2. | Nature of stored food material in the cell |
| 3. | Structural organization of thallus |
| 4. | Chemical composition of the cell wall |
Read the following statements (A-E) and answer the question which follows them.
| A: | In liverworts, mosses, and ferns gametophytes are free-living |
| B: | Gymnosperms and some ferns are heterosporous |
| C: | Sexual reproduction in Fucus, Volvox and Albugo is oogamous |
| D: | The sporophyte in liverworts is more elaborate than that in mosses |
| E: | Both, Pinus and Marchantia are dioecious |
How many of the above statements are correct?
1. Two
2. Three
3. Four
4. One
Read the following five statements (I to V) and select the option with all correct statements.
| I: | Mosses and lichens are the first organisms to colonise bare rock. |
| II: | Selaginella is a homosporous pteridophyte. |
| III: | Coralloid roots in Cycas have VAM. |
| IV: | Main plant body in bryophytes is gametophytic, whereas in pteridophytes it is sporophytic. |
| V: | In gymnosperms, male and female gametophytes are present within sporangia located on sporophytes. |
| 1. | I, III and IV | 2. | II, III and IV |
| 3. | I, IV and V | 4. | II, III and V |
Given are the following five statements (I - V) for your consideration:
| I: | In Equisetum, the female gametophyte is retained on the parent sporophyte |
| II: | In Ginkgo, the male gametophyte is not independent |
| III: | The sporophyte in Marchantia is more developed than that in Polytrichum |
| IV: | Sexual reproduction in Volvox is isogamous |
| V: | The spores of slime moulds lack cell walls |
How many of the above statements is/are correct?
| 1. | Three | 2. | Four |
| 3. | One | 4. | Two |
| 1. | Salvinia - Prothallus | 2. | Viroids – RNA |
| 3. | Mustard-Synergids | 4. | Ginkgo-Archegonia |
Consider the following statements regarding brown algae:
| I. | The pigments are chl a, c and xanthophylls, fucoxanthin |
| II. | Storage food is laminarin and mannitol |
| III. | The cellulosic cell wall is covered with algin |
| IV. | The protoplast have a centrally located vacuole |
| V. | Their photosynthetic organs are called as fronds - leaf like structures |
| VI. | They have pear shaped biflagellate zoospores |
| VII. | They have two unequal laterally attached flagella. |
The number of correct statements is
1. 5
2. 6
3. 7
4. 4
| 1. | Kelps | 2. | Ectocarpus |
| 3. | Spirogyra | 4. | Polysiphonia |
Which of the following statements would be true for brown algae?
| 1. | Major pigments are chlorophyll a, c and fucoxanthin. |
| 2. | Food is stored as floridean starch. |
| 3. | Vegetative cells have wall made of cellulose, pectin and polysulphate esters. |
| 4. | Flagellar number and insertions are 2, equal and apical. |
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