Question

A Very Short Answer Questions (Answer in a word or a sentence).

1. Which cells control the opening and closing of stomata?

2. What is the ultimate source of energy for plants and animals? 3. What factors are essential for photosynthesis to take place ?

4. Name the chemical used to test the presence of starch in leaves ? 5. What is the role of alga in symbiotic plant 'Lichen' ?​

Answer 1

Answer:

1.Guard cells 2.Sun 3.water,sunlight,co2 and chlorophyll 4. iodine test 5.possess the green pigment chlorophyll, enabling them to use sunlight's energy to make their own food from water and carbon dioxide through photosynthesis. They also provide vitamins to the fungus.

Answer 2

Answer:

1. The guard cells

2.The sun

3.To perform photosynthesis, plants need three things: carbon dioxide, water, and sunlight.

4.Iodine solution

5.The green pigment chlorophyll