Question

In which of the following, the plants can be vegetatively propagated by leaf pieces?
(a)Bryophyllum and Kalanchoe
(b)Chrysanthemum and Agave
(c)Agave and Kalanchoe
(d)Asparagus and Bryophyllum

Answer 1

This plant shows vegetative propagation by stem and leaves. Both are native plants of Madagascar. These are used as ornamental plants as well as medical use like astringent, analgesic, carminative, vomiting and diarrhoea especially in ayurveda.

Complete answer:
Bryophyllum and Kalanchoe show vegetative propagation. The vegetative propagation is a type of asexual reproduction. The new small buds arise from the margin of the leaves in Bryophyllum and Kalanchoe and grow to a new plant when falling on the ground.

Additional Information:
-Plants reproduce by sexual reproduction, wherein the flowering plant produces male and female gametes fertilize which grows into seeds within the fruit and the other is asexual reproduction where no fertilization of male and female gametes takes place but plant reproduce by budding, fragmentation, spore formation.
-In asexual reproduction when the plants reproduce by the vegetative part of the mother plant give rise new plant.
-Bryophyllum and Kalanchoe shows vegetative reproduction by leaves where the new buds are arises from the margin of the leaves and germinate under the favorable condition when falling on the ground
-Bryophyllum is a perennial i.e. the lifespan of Bryophyllum is more than two years.
-Bryophyllum has modified leaves i.e. leaf- stem combination called phylloclades which can produce bulblets.
-Kalanchoe has deep green, scalloped leaves and they require well-drained soil and mild temperature.

So, the correct answer is, ‘Bryophyllum and Kalanchoe.’

Note: -Bryophyllum plant is also known as cathedral bells, life plants, air plants, miracle plant is a native plant in Madagascar.
-Kalanchoe are also Madagascar native plants.
-Bryophyllum can cause cardiac poisoning mainly in grazing animals.