During seed germination its stored food is mobilized by:
1. Cytokinin
2. ABA
3. Gibberellin
4. Ethylene
Secondary productivity is the rate of formation of new organic matter by:
1. Parasite
2. Consumer
3. Decomposer
4. Producer
The colonies of recombinant bacteria appear white because of:
| 1. | Insertional inactivation of alpha-galactosidase in non-recombinant bacteria |
| 2. | Insertional inactivation of beta-galactosidase in recombinant bacteria |
| 3. | Inactivation of glycosidase enzyme in recombinant bacteria |
| 4. | Non-recombinant bacteria containing beta-galactosidase |
Which of the following Bt crops is being grown in India by the farmers?
| 1. | Cotton | 2. | Brinjal |
| 3. | Soybean | 4. | Maize |
Interfascicular cambium develops from the cells of:
1. Xylem parenchyma
2. Endodermis
3. Pericycle
4. Medullary rays
Which one of the following is not the function of placenta?
| 1. | Secretes estrogen |
| 2. | Facilitates removal of carbon dioxide and waste material from embryo |
| 3. | Secretes oxytocin during parturition |
| 4. | Facilitates supply of oxygen and nutrients to embryo |
Which of the metabolites is common to respiration mediated breakdown of fats, carbohydrates and proteins?
1. Frutose1, 6 - bisphosphate
2. Pyruvic acid
3. Acetyl CoA
4. Glucose- 6 -phosphate
According to Darwin, organic evolution is due to:
| 1. | Interspecific competition. |
| 2. | Competition within closely related species. |
| 3. | Reduced feeding efficiency in one species due to the presence of interfering species. |
| 4. | Intraspecific competition. |
Which enzyme(s) will be produced in a cell in which there is a non-sense mutation in the lac Y gene?
| 1. | Lactose permease |
| 2. | Transacetylase |
| 3. | Lactose permease and transacetylase |
| 4. | β - galactosidase |
A good producer of citric acid is:
1. Pseudomonas
2. Clostridium
3. Saccharomyces
4. Aspergillus
© 2026 GoodEd Technologies Pvt. Ltd.