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

1. What happens to the dandelion flower

1. During the daytime?
2. At night?

2. What is the phenomenon known as?

Draw the structure of the stomata and label the parts. 

Label the diagram with the raw materials and products of photosynthesis.

Guard cells of stomata are green but cannot photosynthesize? Give reason.

Mention four factors required for photosynthesis?

What are stomata?

An organism A which cannot move from one place to another makes a simple food B from the substances C and D available in the environment. This food is made in the presence of green-colored substance E present in organs F in the presence of light energy in a process called G. Some of the simple food B also gets converted into a complex food H for storage purposes. Does this food give a blue-black color with iodine solution?

a. What is 

1. organism A 
2. food B?
3. food H?

b. What are C and D?

c. Name green-colored substance E and organ F.

d. What is the process G?

In the dental formula `" 2,1,2"/ "2,1,2"` 3 refers to ______.

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 ______.