1. | Pteris | 2. | Funaria |
3. | Polytrichum | 4. | Cedrus |
1. | Flavr savr tomatoes |
2. | Starlink maize |
3. | Bt soybean |
4. | Golden rice |
A lake near a village suffered heavy mortality of fish within a few days. Consider the following reasons for this:
1. | Lots of urea and phosphate fertilizer were used in the crops in the vicinity. |
2. | The area was sprayed with DDT by an aircraft. |
3. | The lake water turned green and stinky |
4. | Phytoplankton populations in the lake declined initially, thereby, greatly reducing photosynthesis. |
Which two of the above were the main causes of fish mortality in the lake?
1. 2, 3
2. 3, 4
3. 1, 3
4. 1, 2
Given below is a diagrammatic cross-section of a single loop of human cochlea.
1. | B: Tectorial membrane C: Perilymph D: Secretory cells |
2. | C: Endolymph D: Sensory hair cells A: Serum |
3. | D: Sensory hair cells A: Endolymph B: Tectorial membrane |
4. | A: Perilymph B: Tectorial membrane C: Endolymph |
1. vessels and tracheid differentiation
2. leaf abscission
3. annual plants
4. floral parts.
1. phellogen
2. plerome
3. periblem
4. dermatogen
1. | Bradyrhizobium | 2. | Clostridium |
3. | Frankia | 4. | Azorhizobium |
1. | Gastric juice will be deficient in chymosin |
2. | Gastric juice will be deficient in pepsinogen |
3. | In the absence of HCl secretion, inactive pepsinogen is not converted into the active enzyme pepsin |
4. | Enterokinase will not be released from the duodenal mucosa and so trypsinogen is not converted to trypsin |
1. cytochrome-b
2. cytochrome-f
3. quinone
4. ferredoxin
1. bioremediation of contaminated soils
2. reclamation of wastelands
3. gene transfer in higher plants
4. biological control of soil-borne plant pathogens