SSLC (English Medium) Class 9 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Science

The raw materials for photosynthesis are ______ and ______.

When iodine solution is added for testing starch, part of the leaf with ______ turns a blue-black color.

In leaves, the food is stored in the form of ______.

Plants may inhale carbon dioxide for photosynthesis but need ______ for their living. 

Plants utilize only ______% of the absorbed water for photosynthesis and the other activities. 

Plants inhale and exhale continuously through the ______.

The bending of shoot towards light is due to the hormone ______.

What is the end product of photosynthesis?

Name the minute openings seen on the lower surface of the leaf.

Study the pictures below and then complete the table by putting a plus (+) if the shoot or root grows towards the stimulus and a minus (-) if it grows away from it.

Which gas evolved during photosynthesis?

Give an example for micronutrients.

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 ______.