Question

A false fruit is the one which develops from
A. Single flower
B. Single flower having attached parts along with ovary
C. Inflorescence
D. Parts of an ovary

Answer 1

Hint: Fruits are classified as true fruits and false fruits on the basis of involvement of flower parts. True fruits develop from the ripened ovary. During the formation of false fruit there is an involvement of other parts along with the ovary. Fruits can also be formed by the process of parthenogenesis.

Complete answer:
 When the fertilization occurs in flowers by the fusion of male gamete (pollen grain) and female gamete (ovule) zygote develops into seed and ovary develops into fruit. Fruits developed by this process are called true fruits. True fruits bear pericarp that is known as the wall of ovary. True fruits bear seeds or the fertilized ovules. True fruits are also called as simple fruits, aggregate fruits, and multiple fruits. Eucarp is the other name of true fruit. Fertilized ovary is the only part that is involved in the formation of true fruit. Examples: Mango, Blueberry, Plums, peaches, pears, watermelon etc.
False fruit development not only involves ovary but also the other parts of the flower. Receptacle (base), the perianth, thalamus, inflorescence or calyx is the other parts which help in the formation of false fruit. It is also called pseudocarp, parthenocarpic fruit or accessory fruit. False fruit develops without fertilization. Examples: cashew-nut, apple, pear, gourd, cucumber, jackfruit, and pineapple.
A single flower that has monocarpellary ovary produces simple fruits. Arrangement of flowers on the stem in plants is known as inflorescence. Racemose is the type of inflorescence.
From the above information we can say that false fruit develops from the single flower having attached parts along with ovary.

So, the correct answer is option B.

Note: Apple is called as false fruit as it develops from the other parts of the flower that is thalamus. Other parts which are involved in the formation of false fruit are thalamus, peduncle, and perianth. Some of the parthenocarpic fruits which develop without fertilization do not contain seed. Banana does not come in the category of false fruit as it developed from the ovary of the flowers.