ANSWER THE QUESTIONS
1. Why are leaves mostly green in colour?
2. Name the parts of a leaf.
3. What are the materials used by the plants during photosynthesis?
4. How do plants use their food?
Answers
■ Chlorophyll is a green coloured, natural and the primary pigment, present in all green plants and in other photosynthetic organisms such as cyanobacteria. The colour of plant leaves and tender part of stems are green due to the presence of this chlorophyll pigment.
■ There are three main parts of a leaf – Leaf base, leaf lamina, and petiole. There are two different types of leaves – simples leaves and compound leaves.
■The raw materials of photosynthesis, water and carbon dioxide, enter the cells of the leaf, and the products of photosynthesis, sugar and oxygen, leave the leaf.
Answer:
1 - Because it contain chlorophyll which makes it's green .
2 - The parts of leaf is flower , stem , root , bud , leaves and fruit .
3 - The materials used by the plants during photosynthesis are sunlight , water , air and chlorophyll .