| I: | It is the most acceptable system for classification of living organisms. | 
| II: | The vegetative characters are more easily affected by environment. | 
| 1. | an artificial system based mainly on the androecium structure. | 
| 2. | a natural system based on large number of natural affinities between flowering plants. | 
| 3. | was a phylogenetic system based on evolutionary relationships. | 
| 4. | was a chemotaxonomic system based on structure of homologous proteins. | 
In numerical taxonomy:
| I: | computers are used and all the observable characters are taken into consideration. | 
| II: | hundreds of characters can be considered together and each character is given equal importance. | 
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. both I and II are incorrect
| 1. | It is a natural system of classification. | 
| 2. | It totally disregarded the external characters and did not include them to classify plants. | 
| 3. | It used internal features like structure, anatomy, embryology and phytochemistry. | 
| 4. | It was based on natural affinities among the organisms. | 
| A | B | C | D | |
| 1. | Vascular plants | Seed plants | Green plants | Land plants | 
| 2. | Land plants | Green plants | Seed plants | Vascular plants | 
| 3. | Green plants | Land plants | Vascular plants | Seed plants | 
| 4. | Seed plants | Vascular plants | Land plants | Green plants | 
| Column I [Classification method]  | 
			Column II [Feature used]  | 
		||
| A. | Artificial | P. | Evolutionary relationships | 
| B. | Phylogenetic | Q. | Gross morphological characters | 
| C. | Chemotaxonomy | R. | Chemical constituents of plants | 
| D. | Cytotaxonomy | S. | Chromosome number, structure and behaviour | 
| A | B | C | D | |
| 1. | P | Q | S | R | 
| 2. | Q | P | R | S | 
| 3. | R | S | P | Q | 
| 4. | S | R | Q | P | 
Fusion of two gametes which are dissimilar in size is termed as
| 1. | Oogamy | 2. | Isogamy | 
| 3. | Anisogamy | 4. | Zoogamy | 
The earliest land plants lacked true roots. What may have enabled them the most to colonize land?
| 1. | Symbiotic associations with fungi | 
| 2. | Prostrate thalloid body | 
| 3. | Motile antherozoids capable of reaching the egg through water | 
| 4. | Parasitic and saprophytic modes of nutrition | 
Consider the following statements regarding green algae:
| I: | Pigments are located in definite plastids | 
| II: | Most have pyrenoids in chloroplasts | 
| III: | Cell wall has an inner layer of pectose and outer layer of cellulose | 
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Which of the following is not a green alga?
| 1. | Ulothrix | 2. | Chara | 
| 3. | Volvox | 4. | Ectocarpus |