Biology
Define the terms given below :
- Phyllotaxy
- Leaf
- Autotrophic nutrition
- Leaf tendril
- Vegetative propagation
Leaf
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Answer
Phyllotaxy — The arrangement of leaves on a stem or its branch is called phyllotaxy. Phyllotaxy are of three types- Alternate, Opposite, and Whorled.
Leaf — Leaves are the flat and green parts of the shoot that grow laterally from the nodes of the stem. They perform important functions like photosynthesis and transpiration.
Autotrophic nutrition — All green plants have the capability to prepare their own food, and are therefore called autotrophs, and this method of nutrition is called autotrophic nutrition.
Leaf tendril — In case of certain weak-stemmed plants, leaves or leaflets are modified into wiry, coiled structures called tendrils. They are sensitive to touch. As they touch any object, they coil around it and support the plant to climb up.
Vegetative propagation — Sometimes new plants may also be produced from other (vegetative) parts of the plant such as the roots, stems and leaves instead of seeds. This type of reproduction is called vegetative propagation.
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Related Questions
Define:
- Photosynthesis
- Transpiration
Name the following :
- Two organ systems of the plant
- Two main types of the root system
- Five parts of the shoot system
- Three types of phyllotaxy
- Two types of venation
Give a term for the following.
- The fine hair-like projections from the ends of the root branches.
- The part of the stem between two successive nodes.
- The kind of leaves without a petiole.
- The technical term of a leaf stalk.
- The pigment which traps solar energy for the process of photosynthesis.
Giving examples, differentiate between Tap root and Fibrous root