Question

Which one of the following organisms reproduces sexually only once in its lifetime?
A.Banana plant
B.Mango
C.Tomato
D.Eucalyptus

Answer 1

Hint: A perennial plant can be described as a plant that lives more than two years. These plants reproduce only once in their life cycle – means plants need their entire life cycle to form seed from flower.
Annual Plants can be described as a plant that can produce seed within a single growing season. In these plants all the roots, stems and leaves of the plant die annually. Examples include Coreopsis.

Complete step by step answer:
-Banana is an exceptional perennial plant. It reproduces sexually only once in its lifetime. Hence, it gives flowers only once in a lifetime. If further fruit is needed from a banana plant then the reproduction of the banana plant can be done by parthenocarpy – which is known as the seedless formation of fruit.
-Mango is a perennial plant because it grows and flowers for more than two years.
-Tomato is a perennial plant as it continues to grow and flowers for more than two years.
-Eucalyptus is an annual plant. It completes its life cycle within one year and then dies.

So, the correct answer is option A. Banana plant.

Note:
There is another type of plant that is seen in nature. It is called the Biennials plants. Biennials plants are those plants which require two years to complete their life cycle. Examples include Biennial Foxglove. The first season of growth results in a small rosette of leaves that is seen near the soil surface and during the second season of growth the stem elongation, flowering and seed formation occur and finally the death of the whole plant takes place.