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Biology Class 9

Why do cells age and die?

Is cell death natural?

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Asked on 06/02/2026
105 views
1 answers 50 votes
Biology Class 9

Mixed farming

Define mixed farming.

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Asked on 06/02/2026
106 views
1 answers 50 votes
Biology Class 9

Why is the surface area of cells limited?

Why don’t cells grow endlessly?

uniboardhub
Asked on 06/02/2026
109 views
1 answers 50 votes
Biology Class 9

Crop rotation

What is crop rotation?

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Asked on 06/02/2026
110 views
1 answers 50 votes
Biology Class 9

Why are nerve cells long?

How does shape help function?

uniboardhub
Asked on 06/02/2026
107 views
1 answers 50 votes
Biology Class 9

Green manure

What is green manure?

uniboardhub
Asked on 06/02/2026
106 views
1 answers 50 votes
Biology Class 9

Why do plant cells have fixed shape?

Does it help plants?

uniboardhub
Asked on 06/02/2026
109 views
1 answers 50 votes
Biology Class 9

Soil fertility

What is soil fertility?

uniboardhub
Asked on 06/02/2026
107 views
1 answers 50 votes
Biology Class 9

What happens if lysosomes stop working?

Can waste build up?

uniboardhub
Asked on 06/02/2026
109 views
1 answers 50 votes
Biology Class 9

Nutrient deficiency

What happens due to nutrient deficiency in crops?

uniboardhub
Asked on 06/02/2026
106 views
1 answers 50 votes
Biology Class 9

Why are cells microscopic?

Why can’t we see them directly?

uniboardhub
Asked on 06/02/2026
107 views
1 answers 50 votes
Biology Class 9

Organic farming

What is organic farming?

uniboardhub
Asked on 06/02/2026
108 views
1 answers 50 votes
Biology Class 9

What is membrane biogenesis?

Which organelles help in it?

uniboardhub
Asked on 06/02/2026
107 views
1 answers 50 votes
Biology Class 9

Animal disease control

Why is disease control important in livestock?

uniboardhub
Asked on 06/02/2026
106 views
1 answers 50 votes
Biology Class 9

Why are plant cells autotrophic?

How do they make their own food?

uniboardhub
Asked on 06/02/2026
109 views
1 answers 50 votes

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