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MCQ Questions for Class 9 Science with Answers Biology
Q1. How many nutrients are essential for plants?
(i) 16
(ii) 20
(iii) 26
(iv) 36
(i) 16
Q2. Weeds are the unwanted plants that grow along with the cultivated plants. How do they affect the crop plants?
(i) By killing plants in the field before they grow
(ii) By dominating the plants to grow
(iii) Competing for various resources of plants causing low availability of nutrients
(iv) All of above
(iii) Competing for various resources of plants causing low availability of nutrients
Q3. Which one is not a source of carbohydrate?
(i) Rice
(ii) Millets
(iii) Sorghum
(iv) Gram
(iv) Gram
Q4. Main sugar present in the honey is :-
(i) Maltose
(ii) Levulose
(iii) Dextrose
(iv) Ribose
(ii) Levulose
Q5. How many micronutrients are required by plants?
(i) 6
(ii) 10
(iii) 7
(iv) 12
(iii) 7
Q6. Fish is an important aquatic food which is rich in proteins. The act of capturing, preservation and utilization of fishes is called fish culture.
(i) A large number of fishes are raised in the small area.
(ii) Economically important desired fishes are made available
(iii) There is more mortality in the younger stages of the fishes
(iv) Through selective hybridization, yield and quality of fishes are improved
(iii) There is more mortality in the younger stages of the fishes
Q7. To solve the food problem of the country, which among the following is necessary?
(i) Increased production and storage of food grains
(ii) Easy access of people to the food grain
(iii) People should have money to purchase the grains
(iv) All of the above
(iv) All of the above
Q8. Red cell count is carried out by
(i) haemocytometer
(ii) haemoglobinometer
(iii) sphygmomanometer
(iv) electrocardiogram
(i) haemocytometer
Q9. The hybrid breed of buffalo yielding maximum milk is:
(i) Jamunapari
(ii) Murrah
(iii) Sahiwal
(iv) Barbary
(ii) Murrah
Q10. Growing different crops in the same field in a pre-planned succession, to improve the quality and quantity of the crop yield and maintain the fertility of soil is known as:
(i) Crop rotation
(ii) Plant breeding
(iii) Intercropping
(iv) Crop management
(ii) Plant breeding
Q11. Which one of the following species of honeybee is an Italian species?
(i) Apis dorsata
(ii) Apis florae
(iii) Apis cerana indica
(iv) Apis mellifera
(iv) Apis mellifera
Q12. Broilers are maintained for getting :-
(i) Milk
(ii) Egg
(iii) Meat
(iv) Leather
(iii) Meat
Q13. This hybrid breed of the hen has the world record of laying maximum eggs:
(i) White leghorn
(ii) Minorca
(iii) Karaknath
(iv) Vasra
(i) White leghorn
Q14. Find out the wrong statement among the following:
(i) White revolution is meant for increase in milk production
(ii) Blue revolution is meant for increase in fish production
(iii) Increasing food production without compromising with environment quality is called as sustainable agriculture
(iv) None of these
(iv) None of these
Q15. Poultry fowl are susceptible to the following pathogens
(i) Viruses
(ii) Bacteria
(iii) Fungi
(iv) All of the above
(iv) All of the above
Q16. Lysosomes are the reservoirs of
(i) Fat
(ii) RNA
(iii) Secretory glycoproteins
(iv) Hydrolytic enzymes
(iv) Hydrolytic enzymes
Q17. Which goat is known as the queen of milk?
(i) Barbary
(ii) Jamunapari
(iii) Sannen
(iv) Bikaneri
(iii) Sannen
Q18. Which of the following is a fungus disease causing maximum deaths of poultry birds?
(i) Pullorium
(ii) Coryza
(iii) Rickets
(iv) Aspergillosis
(iv) Aspergillosis
Q19. Which one of the following nutrients is not available in fertilisers?
(i) Nitrogen
(ii) Phosphorus
(iii) Iron
(iv) Potassium
(iii) Iron
Q20. Which of the following nutrients are absorbed by plants in large quantities from soil?
(i) Manganese
(ii) Iron
(iii) Zinc
(iv) Sulphur
(iv) Sulphur
Q21. Double membrane is absent in –
(i) Mitochondrion
(ii) Chloroplast
(iii) Nucleus
(iv) Lysosome
(iv) Lysosome
Q22. Which of the following is not considered as primary nutrient for plants?
(i) Oxygen
(ii) Nitrogen
(iii) Phosphorus
(iv) Potassium
(i) Oxygen
Q23. Striated muscles are found in
(i) gall bladder
(ii) wall of bronchi
(iii) leg muscles
(iv) lungs
(iii) leg muscles
Q24. Why are honeybees so important ?
(i) They are excellent pollinators
(ii) They show a high degree of social life
(iii) They have a stinger
(iv) They produce bee wax
(i) They are excellent pollinators
Q25. Sometimes fish are cultured with:
(i) Maize crop
(ii) Rice crop
(iii) Wheat crop
(iv) Pulses
(ii) Rice crop
Q26. Catla and Rohu are the examples of :-
(i) Exotic fresh water fishes
(ii) Indigrenous fresh water fishes
(iii) Indigenous marine water fishes
(iv) Exotic marine water fishes
(ii) Indigrenous fresh water fishes
Q27. Chickens or turkeys raised specifically for meat are called:
(i) Bird Culture
(ii) Pullets
(iii) Broilers
(iv) Hybrids
(iii) Broilers
Q28. The cell organelle associated with cell secretion is
(i) Plastids
(ii) Mitochondria
(iii) Golgi apparatus
(iv) Nucleolus
(iii) Golgi apparatus
Q29. Which of the following is cultured for pearls?
(i) Bhetki
(ii) Prawns
(iii) Mullets
(iv) Oysters
(iv) Oysters
Q30. Which one of the following is milch breed of cow ?
(i) Nageri
(ii) Malvi
(iii) Gir
(iv) Hallikar
(iii) Gir
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