Advertisements
Advertisements
Question
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
Options
Monoecious plant bearing unisexual flowers
Dioecious plant bearing only male or female flowers
Monoecious plant with bisexual flowers
Dioecious plant with bisexual flowers
Advertisements
Solution
Dioecious plant bearing only male or female flowers
APPEARS IN
RELATED QUESTIONS
With the help of a suitable example, explain protandry.
List the different types of pollination depending upon the source of pollen gain.
A flower of tomato plant following the process of sexual reproduction produces 240 viable seeds.
Answer the following questions giving reasons :
(a) What is the minimum number of pollen grains that must have been involved in the pollination of its pistil?
(b) What would have been the minimum number of ovules present in the ovary?
(c) How many megaspore mother cells were involved?
(d) What is the minimum number of microspore mother cells involved in the above case?
(e) How many male gametes were involved in this case?
Make a list of any three outbreeding devices that flowering plants have developed and explain how they help to encourage cross-pollination.
What is meant by emasculation?
Fill in the blank:
Male sex cells in plants are called _________.
Which one of the following is one of the characteristics of self-pollinated flowers?
Name of the parts of the ovary which give rise to:
Fruit wall ______
Give four adaptations shown by flowers pollinated by wind.
Answer the following question.
Write the difference in the characteristics of the progeny produced as a result of the two processes.
Chief pollinators of agricultural crops are ______.
Which of these is a condition that makes flowers invariably autogamous?
Which type of flower has ovary superior?
In which one of the following pollination is autogamous?
Autogamy can occur in a chasmogamous flower if ______.
What is epihydrophily?
Name the following:
Aquatic plants which are anemophilous.
Briefly discuss any two methods by which plants avoid self-pollination.
Name the pollinating agent of a flowering plant with large and coloured flowers with sticky stigma. State one characteristic feature of the pollen grains produced in such flowers.
Hydrophily (Hypo) is characterized by which of the following conditions?
