Biology [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 484 - 489 of 518
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Question 484
Question MCQ▾
Steps in Genetic engineering include
Choices
Choice (4) | Response | |
---|---|---|
a. | Fusion with bacterial plasmid and introducing into bacteria | |
b. | Selection and extraction of desired gene | |
c. | Selection of transformed bacteria and its culture | |
d. | All a., b. and c. are correct |
Question 485
Question MCQ▾
Which of the following is method of sterilization?
Choices
Choice (4) | Response | |
---|---|---|
a. | Autoclave | |
b. | Centrifugation | |
c. | PCR | |
d. | Electrophoresis |
Question 486
Question MCQ▾
Organic matter is important as
Choices
Choice (4) | Response | |
---|---|---|
a. | it increases fertility of soil | |
b. | it provides texture to soil | |
c. | increases water holding capacity | |
d. | All a., b. and c. are correct |
Question 487
Question MCQ▾
Which of the following is associated with chlorophyll?
Choices
Choice (4) | Response | |
---|---|---|
a. | Mg | |
b. | Ca | |
c. | Fe | |
d. | Na |
Question 488
Question MCQ▾
Vermicomposting is
Choices
Choice (4) | Response | |
---|---|---|
a. | Preparation of compost using bacteria | |
b. | Preparation of compost using fungi | |
c. | Preparation of compost using Honey bee | |
d. | Preparation of compost using earthworms |
Question 489
Question MCQ▾
What are the impacts of global warming and climate disruption on agriculture?
Choices
Choice (4) | Response | |
---|---|---|
a. | Adverse human health causing less manpower | |
b. | Desertification | |
c. | Impaired photosynthesis | |
d. | All a., b. and c. are correct |