Biology [NSTSE (National Science Talent Search Exam- Unified Council) Class 9]: Questions 478 - 483 of 518
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Question 478
Question MCQ▾
Principle of biogas production is
Choices
Choice (4) | Response | |
---|---|---|
a. | Decomposition and Degradation | |
b. | Fermentation | |
c. | Methanogenesis | |
d. | Question does not provide sufficient data or is vague |
Question 479
Question MCQ▾
Which of the following contains unsaturated fatty acids?
Choices
Choice (4) | Response | |
---|---|---|
a. | Butter | |
b. | Ghee | |
c. | Oil | |
d. | Question does not provide sufficient data or is vague |
Question 480
Question MCQ▾
Cyanobacteria or blue green algae are blue green in appearance due to presence of
Choices
Choice (4) | Response | |
---|---|---|
a. | Chlorophyll a | |
b. | Chlorophyll b | |
c. | C phycocyanin | |
d. | Both b. and c. are correct |
Question 481
Question MCQ▾
Chemicals that is used to kill insects is known as
Choices
Choice (4) | Response | |
---|---|---|
a. | Rodenticides | |
b. | Insecticides | |
c. | Pesticides | |
d. | Herbicides |
Question 482
Question MCQ▾
Fertility of the soil can be lost due to
Choices
Choice (4) | Response | |
---|---|---|
a. | Soil erosion | |
b. | Excessive grazing | |
c. | Excessive use of fertilizers | |
d. | All a., b. and c. are correct |
Question 483
Question MCQ▾
Organic farming will be helpful in
Choices
Choice (4) | Response | |
---|---|---|
a. | reducing the harmful effect of chemical fertilizer on human beings | |
b. | improving crop production | |
c. | improving insect resistance | |
d. | Question does not provide sufficient data or is vague |