Parts of the Plant: Leaves

Leaves vary in shape and size but share a common structure designed for photosynthesis. The leaf consists of an upper and lower epidermis, with stomata for gas exchange. The mesophyll, located between the epidermis layers, facilitates water and nutrient transport. Chloroplasts in the mesophyll contain chlorophyll, which captures sunlight to produce food through photosynthesis. Leaf adaptations, such as a waxy surface and spongy texture, optimize this process.

What is the primary function of the stomata found in the lower epidermis of a leaf?

• To transport minerals

• To absorb sunlight

• To exchange gases

• To store water

Which layer of the leaf is responsible for carrying water and minerals?

• Chloroplasts

• Upper epidermis

• Mesophyll

• Lower epidermis

How are the cells in the mesophyll layer arranged to facilitate their function?

• Tightly packed with no spaces

• In a single layer

• Loosely with air spaces

• In a circular pattern

What is the main role of chlorophyll in the process of photosynthesis?

• To protect the leaf

• To absorb water

• To manufacture food

• To exchange gases

Which feature of the leaf helps in conserving water?

• Stomata

• Spongy mesophyll

• Chlorophyll

• Waxy upper epidermis