SSLC (English Medium) कक्षा ९ - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

Lysozyme is seen in ______.

The act of bringing swallowed food back to the mouth ______.

Viruses are non-cellular, ______ parasites.

Adenovirus is ______ virus.

Virions are the smallest among the infective agents.

Viruses are devoid of cellular organelles like ribosomes mitochondria, etc.

Influenza commonly occurs during adult age.

One of the differences between virus and viroid is the presence of protein coat in viroid and its absence in the virus.

Enumerate the living and non-living characters of viruses.

Azolla has a cyanobacterial symbiotic association with ______.

______ is a type of Bio-fertilizers that are capable of producing antifungal and antibacterial compounds.

Mycorrhizae increase the uptake of ______.

______ is the study of chemical substances derived from plants.

Rhizobium fixes atmospheric nitrogen and converts them to nitrates.

What are biofertilizers? Give examples. Why are biofertilizers better than other fertilizers?

Write a short note on

Uzhavan App

Arun and Akash were given fertilizers and earthworm compost both to be used in the fields. Akash preferred to use earthworm compost. Why did not select the fertilizers?

Define electric field.

Define electric field.

Define electric field.