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A dicotyledonous plant bears flowers but never produces fruits
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A dicotyledonous plant bears flowers but never produces fruits and seeds. The most probable cause for the above situation is:
(A) Plant is dioecious and bears only pistillate flowers
(B) Plant is dioecious and bears both pistillate and staminate flowers
(C) Plant is monoecious
(D) Plant is dioecious and bears only staminate flowers

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Oswaal CBSE MCQs Chapterwise For Term I II, Class 12, Biology (Oswaal)

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A dicotyledonous plant bears flowers but never produces fruits and seeds. The most probable cause for the above situation is:
(A) Plant is dioecious and bears only pistillate flowers
(B) Plant is dioecious and bears both pistillate and staminate flowers
(C) Plant is monoecious
(D) Plant is dioecious and bears only staminate flowers
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(D) In dioecious plants, the unisexual male flower is staminate, that is, bearing stamens only, while the female is pistillate or bearing pistils only. For the production of fruits and seeds fertilization must take place, which is possible only in the presence of both male and female flowers. When the plant is dioecious, it will give rise to the following situations :
(i) If the plant is dioecious and bears only pistillate flowers, fertilization can take place with the help of pollinators.
(ii) If the plant is dioecious and bears only staminate flowers, fertilization cannot take place, because female gamete is nonmotile which can't reach the male gamete in order to fuse with it. When the plant is monoecious, that is, carrying both stamen and pistil together, it may lead to self fertilization and production of seed.
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Practice questions from Oswaal CBSE MCQs Chapterwise For Term I II, Class 12, Biology (Oswaal)

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Question Text
A dicotyledonous plant bears flowers but never produces fruits and seeds. The most probable cause for the above situation is:
(A) Plant is dioecious and bears only pistillate flowers
(B) Plant is dioecious and bears both pistillate and staminate flowers
(C) Plant is monoecious
(D) Plant is dioecious and bears only staminate flowers
TopicSexual Reproduction in Flowering Plants
SubjectBiology
ClassClass 12
Answer TypeText solution:1
Upvotes88