Important Short Questions of Biology 9th Class

Give any two applications of Horticulture in daily life. 
Differentiate between population and community.       
Biotechnology helps mankind, justify.    
Define quantitative and qualitative observation givingone example of each.
Explain why biologists report the result of their findings at National and International level.
Give two reasons for the exclusion of Kingdom Fungi from Kingdom Plantae.
Eucalyptus is harmful for other plants growing near it. Explain.
Differentiate between benign and malignant tumors.  
Give two advantages of Apoptosis.    
Give two function performed by Cytoplasm
Cell works as an open system. Explain.   
Show the effect of hypotonic soloution on animal and plant cell. 
Enzymes lower the activation energy of chemical reaction.Explain two methods.
Birds have high body temperature than mammals. What would happen to the activity of a bird's enzyme if it is given temperature of 37C.
Induced-fit model of enzyme action is more acceptable than lock and key model of enzyme action. Justify.
Explain redox reactions in living organisms. 
Compare aerobic and anaerobic respiration with respect to site of occurrence and final products.
Explain the effect of deficiency of Nitrogen and magnesium on the plants.
If we supply inorganic and organic fertilizers to plants, which one whould be first available to the plants for uptake and why?
Balanced diet differs with age and gender. Explain.  
Pepsin is a powerful protein digesting enzyme. It does not digest the stomcach walls, which are mostlyproteins. Justify.
Give harmful and beneficial aspects of transpiration.         
Differentiate between source and sink.     
Patients bleed from the nose, gums and under the skin in dengue fever. Give reason.
Define universal donors and universal recipients.