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, 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 |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
Examine the figures A, B, C and D. In which one of the four options all the items, A, B, C and D are correct?
Options :
A | B | C | D | |
1. | Equisetum | Ginkgo | Selaginella | Lycopodium |
2. | Selaginella | Equisetum | Salvinia | Ginkgo |
3. | Funaria | Adiantum | Salvinia | Riccia |
4. | Chara | Marchantia | Fucus | Pinus |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
I: | It is the most acceptable system for classification of living organisms. |
II: | The vegetative characters are more easily affected by environment. |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
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. |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
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
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
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 |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
The form and size of algae is highly variable. Which of the following will not be true?
I: | Volvox is a colonial alga. |
II: | Ulothrix and Spirogyra do not form filaments. |
III: | Kelps form massive plants bodies. |
1. Only II | 2. Only III |
3. Both I and II | 4. Both II and III |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
Identify the incorrectly matched pair:
Alga | Sexual reproduction | |
I: | Ulothrix | Isogamous; non-flagellated gametes |
II: | Spirogyra | Isogamous; flagellated gametes |
III: | Udorina | Anisogamous |
IV: | Fucus | Oogamous |
1. | Only III | 2. | I, II and III |
3. | Only I and II | 4. | Only III and IV |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
I: | Algin is a hydrocolloid derived from brown algae |
II: | Carrageen is a hydrocolloid derived from green algae |
III: | Agar is a complex polysaccharide derived from red algae, Gelidium and Gracilaria |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.