Question

2. The leaves of monocot plants are
(a) Stalked and have parallel venation
(b) Sessile and have parallel venation
(c) Sessile and have reticulate venation
(d) Stalked and have reticulate venation
3. Main functions of leaf is
(a) Transpiration and photosynthesis
(b) Photosynthesis and respiration
1) Respiration and​

Answer 1

Answer:

2)b) sessile and have parallel venation

3)a)transpiration and photosynthesis

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Answer 2

Answer:

Explanation:

a)Within each leaf, the vascular tissue forms veins. The arrangement of veins in a leaf is called the venation pattern. Monocots and dicots differ in their patterns of venation. Monocots have parallel venation in which the veins run in straight lines across the length of the leaf without converging.

b)Some leaves have a petiole, which attaches the leaf to the stem; leaves that do not have petioles are directly attached to the plant stem and are called sessile leaves. The arrangement of veins in a leaf is called the venation pattern; monocots have parallel venation, while dicots have reticulate venation.

d)The phenomenon of arrangement of veins on the leaf is called as venation. There are two types venation, namely reticulate venation and parallel venation. Reticulate venation involves irregular distribution of veins to form a network. Examples of plants showing reticulate venation include rose, tulsi, Hibiscus, papaya, Ficus, Bambusa. Parallel venation involves the veins running parallel to each other. Examples of plants showing parallel venation include grains, banana, canna, grass, musa, plum, Zea (maize). Leaves of monocot plants show parallel venation and leaves of dicot plants show reticulated venation. However, there are exceptions in monocots like Smilax, Alocasia, Dioscorea, Colocasia. They show reticulate venation.

3)a)Photosynthesis, respiration

As we all know, leaves have tiny pores called stomata, which is used for the exchange of gases. Photosynthesis: Its main functions are photosynthesis and gas exchange.  Transpiration is essentially evaporation of water from plant leaves