Ans.
Petiole, leaf base, lamina, leaf apex, and leaf margin
are the external parts of a leaf.
What are the external parts of leaf?
Ans.
Petiole, leaf base, lamina, leaf apex, and leaf margin
are the external parts of a leaf.
What are the internal parts of a leaf and their functions?
| Name of Structure Structure Function | Pith Parenchyma with vacuoles and plastids Storage, support | Plasmodesmata Openings between sieve tubes connecting cytoplasm Transport of sap | Spongy cells Rounded, widely spaced, near stomata Allow gas exchange | Suberin Waxy molecule Waterproofing |
|---|
What are the three external features of a leaf?
The standard leaf has three tissue regions:
the epidermis, the mesophyll, and the vascular bundles or veins
(Figure ).
What are the three main structural parts of a leaf?
- All leaves have the same basic structure – a midrib, an edge, veins and a petiole.
- The main function of a leaf is to carry out photosynthesis, which provides the plant with the food it needs to survive.
- Plants provide food for all life on the planet.
What are different part of a leaf?
The basic angiosperm leaf is composed of a
leaf base, two stipules, a petiole, and a blade (lamina)
….
What are the 4 functions of a leaf?
- Photosynthesis.
- Transpiration.
- Guttation.
- Storage.
- Defense.
What are the two main functions of a leaf?
The two main functions performed by the leaf are
photosynthesis and transpiration
. Photosynthesis is the process by which green plants make their food from carbon dioxide and water in the presence of sunlight.
Which of the following is a function of a leaf?
Both
photosynthesis and transpiration
are the functions of leaves.
What are the 4 parts of a leaf?
Each leaf typically has
a leaf blade ( lamina ), stipules, a midrib, and a margin
. 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.
What are internal and external features?
External: These are traits that you can see and use to describe what a character looks like. Internal: These are
traits that describe the way a character acts
. EX: alert, ambitious, bossy, lazy, jealous, smart, lucky, etc.
Which part is absent in a typical leaf?
Stipules
are the lateral appendages of the leaf borne at its base. They are present in many families of dicotyledons, but they are absent or very rare in monocotyledons. When these stipules are present, the leaf is said to be stipulate and when absent exstipulate.
Which is the most important part of a leaf?
Photosynthesis: This is the most important function of a leaf. They contain
chloroplasts
which have the pigment chlorophyll that is responsible for helping in photosynthesis. The prepared food is transported to the other parts of the plant via phloem tissue.
What are the 3 main functions of leaves?
The leaves perform three main functions such as
manufacture of food, interchange of gases between the atmosphere and the plant body and evaporation of water
.
What is the main function of veins in a leaf?
Veins are composed of xylem and phloem cells embedded in parenchyma, sometimes sclerenchyma, and surrounded by bundle sheath cells. The vein xylem
transports water from the petiole throughout the lamina mesophyll
, and the phloem transports sugars out of the leaf to the rest of the plant.
How do you describe a leaf?
A leaf is
an above-ground plant organ and it is green
. Its main functions are photosynthesis and gas exchange. A leaf is often flat, so it absorbs the most light, and thin, so that the sunlight can get to the chloroplasts in the cells. … Leaves come in many shapes and sizes.
