Which ofthe following is not true for a species?
Members of a species can interbreed
Variations occurs among members of a species
Each species is reproductively isolated from every other species
Gene flow does not occur between the populations of a species
D.
Gene flow does not occur between the populations of a species
Gene flow means the spread of genes through populations as affected by movements of
individual and their propagules e.g., spores, seeds etc. It ensures that all populations of a given species share a common gene pool i.e., it reduces difference between populations. The interruption of gene flow between populations is a pre-requisite for the formation of new species.
Indian rhinoceros are protected in
Gir forest
Kaziranga National Park
Bandipur National Park
Ranthambore National Park
Match items in Column- I with those in Column- II
| Column- I | Column- II |
| A. Peritrichous flagellation | 1. Ginkgo |
| B. Living fossil | 2. Macrocystes |
| C. Rhizophore | 3. Escherichia coli |
| D. Smallest flowering plant | 4. Selaginella |
| E. Largest perennial alga | 5.Wolffia |
Select the correct answer from the following
A B C D E
2 1 3 4 5
A B C D E
5 3 2 5 1
A B C D E
1 2 5 3 2
A B C D E
3 1 4 5 2
Match the following Columns.
| Column I (Cell Organelle) | Column II (Discovered by) |
| A. Ribosome | 1. Fontana |
| B. Nucleolus | 2. Tolbert and Yamazaki |
| C. Glyoxysome | 3. Palade |
| D. Peroxisome | 4. Beevers |
A – 1; B – 4; C – 2; D – 3
A – 3; B – 4; C – 1; D – 2
A – 1; B – 3; C – 2; D – 4
A – 3; B – 1; C – 4; D – 2
Calyptra develops from
Venter wall of archegonium
Outgrowth of gametophyte
Neck wall of archegonium
Paraphysis of the archegonial branch
