In this article we will discuss about the structure of a leaf with the help of a diagram. A leaf is a compromise between two conflicting evolutionary pressures. The first is to expose a maximum photosynthetic surface to sunlight; the second is to conserve water while, at the same time, providing for the exchange of gases necessary for photosynthesis. The [...]
Read this article in Hindi to learn about the various type of leafs, explained with the help of suitable diagrams. Type # 1. नागफनी (Opuntia): i. यह नागफनी की टहनी है। ii. इसकी पत्तियाँ शूलों (spines) के रूप में रूपान्तरित हो गई हैं । iii. शूलों के रूप में पत्तियाँ एक रूपान्तरित तने पर्णाभ पर लगी हैं । iv. एक-एक [...]
The upcoming discussion will update you about the difference between dorsiventral leaf, Isobilateral leaf and centric leaf. Difference # Dorsiventral Leaf: 1. Internally the leaf is differentiated into upper and lower epidermis and mesophyll, which lies in between the two epidermises. 2. The distribution of stomata is usually restricted to lower epidermis. 3. Mesophyll is composed, of palisade and spongy [...]