Advertisements
Advertisements
प्रश्न
Fill in the blanks with suitable words.
_______ is a water-pollinated flower.
उत्तर
Vallisneria is a water-pollinated flower.
APPEARS IN
संबंधित प्रश्न
A flower of tomato plant following the process of sexual reproduction produces 200 viable seeds.
Answer the following questions giving reasons :
(a) What would have been the minimum number of ovules present in pre-pollinated pistil ?
(b) How many microscope mother cells would minimally be required to produce requisite number of pollen grains ?
(c) How many pollen grains must have minimally pollinated the carple ?
(d) How many male gametes would have used to produce these 200 viable seeds ?
(e) How many megaspore mother cells were required in this process ?
In bisexual flowers, maturation of gynoecium before androecium is known as ______.
Autogamy can occur in a chasmogamous flower if ______.
Chief pollinators of agricultural crops are ______.
Even in absence of pollinating agents seed-setting is assured in ______.
In some plants anther and stigma mature at the same time this condition is called ______.
Match the Column I with Column II.
| Column I | Column II |
| A. Pea | (i) Xenogamy |
| B. Jawar | (ii) Epihydrophily |
| C. Maize | (iii) Anemophily |
| D. Vallis | (iv) Bisexual |
| E. Cannabis | (v) Geitonogamy |
Describe any three adaptations in hydrophilous flowers.
What are the major abiotic factors that influence habitat?
Briefly discuss any two methods by which plants avoid self-pollination.
