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प्रश्न
What are chasmogamous flowers?
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उत्तर
There are two types of flowers present in plants, namely Oxalis and Viola.
Both chasmogamous and cleistogamous flowers are present in plants. Chasmogamous flowers have exposed anthers and stigmata, similar to the flowers of other species.
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संबंधित प्रश्न
Lever mechanism of pollination is observed in
- Salvia
- Jasmine
- Bougainvillea
- Butea
What is self-incompatibility?
What is meant by emasculation?
Fill in the blanks:
The two kinds of pollination are __________ and __________.
Find the odd-one out, giving reason:
Ovary, style, pollen grain, stigma
Name of the part of the ovary which gives rise to:
Fruit ______
Put a tick mark (✓) against the correct alternative in the following statements
Pollen is produced in the
Put a tick mark (✓) against the correct alternative in the following statements
Vegetative propagation is not observed in:
Differentiate Between Cross Pollination and Self Pollination:
Mention various adaptations for wind pollination.
Autogamy can occur in a chasmogamous flower if ______.
Both chasmogamous and cleistogamous flowers are present in ______.
Pollination by water occurs in ______.
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by ______.
Which of the following pair has haploid structures?
Male and female flowers are present on different plants (dioecious) to ensure xenogamy, in ______.
Feathery stigma occurs in ______.
Plants with ovaries having only one or a few ovules are generally pollinated by ______.
Which of these is a condition that makes flowers invariably autogamous?
Heterostyly as a contrivance for cross-pollination is found in ______.
Which of the following plant contain unisexual flower?
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
Consider the following statements depicting adaptation of flowers to carryout successful pollination.
- Stigma is long, sticky and unwettable.
- Sepals, petals or perianth (if present) have waxy coating.
- Stamens with long filament and versatile anthers.
- Tubular corolla is seen.
- Flowers are noctumal.
Which of the above statements clearly depict hydrophily?
Mention any one example of the hydrophilous flower.
Give any four floral adaptations for chiropterophily.
What are the major abiotic factors that influence habitat?
Name the following:
Aquatic plants which are anemophilous.
When and why does a plant breeder employ the emasculation technique?
Identify the set of correct statements:
- The flowers of Vallisneria are colourful and produce nectar.
- The flowers of waterlily are not pollinated by water.
- In most of water-pollinated species, the pollen grains are protected from wetting.
- Pollen grains of some hydrophytes are long and ribbon like.
- In some hydrophytes, the pollen grains are carried passively inside water.
Choose the correct answer from the options given below:
