Even in absence of pollinating agents seed-setting is assured in ______. - Biology

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Even in absence of pollinating agents seed-setting is assured in ______.


  • Commelina

  • Zostera

  • Salvia

  • Fig



Even in absence of pollinating agents seed-setting is assured in Commelina.

Concept: Pollination
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Name the part of the flower which the tassels of the corn- cob represent.

What is bagging technique? How is it useful in a plant breeding programme?

Add a note on pollination mechanism in Salvia.

Draw a diagram of a section of a megasporangium of an angiosperm and label funiculus, Micropyle, embryosac and nuclleus.

Write two ways in which pollination may occur in plants.

Name two characteristics of flowers in which pollination occur by wind.

What is meant by pollination?

Fill in the blank:

Male sex cells in plants are called _________.

Fill in the blanks:

The two kinds of pollination are __________ and __________.

Find the odd-one out, giving reason:

Ovary, style, pollen grain, stigma

Differentiate between the following:

Self pollination and cross pollination.

Define the term Pollinating.

Can a unisexual flower be self pollinated?

Complete the following chart and rewrite.

Sr.No. Agencies type of pollination
1 Water ....................
2 ........................... Entomophily
3 Bat ....................
4 ....................... Ornithophily



Explain outbreeding devices in angiospermic plants.

Which one of the following is one of the characteristics of self-pollinated flowers?

Exine and intine are the parts of

Fill in the blanks with suitable words.

_______ is a water-pollinated flower.

Name of the part of the ovary which gives rise to:

Fruit ______

Mention any two contrivances in flowers which favour cross-pollination.

In bisexual flowers, maturation of gynoecium before androecium is known as ______.

Choose the correct option of the following question:

Type of Interaction where an individual sacrifices its own welfare (life) for the benefit of another animal of its own species is:

State four features of flowers pollinated by insects.

Give four adaptations shown by flowers pollinated by wind.

Answer the following question.
Express the process of pollination in Vallisneria.

Coelacanth was caught in South Africa. State the significance of the discovery of Coelacanth in the evolutionary history of vertebrates.

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:

Name the two types of pollination.

What is a flower? Draw a typical flower and label its different parts.

Describe pollination. How many types of pollinations are found?

Write different modes of pollination in detail with suitable examples.

Differentiate Between Cross Pollination and Self Pollination:

Describe the Advantages and Disadvantages of self-pollination to the Plant.

What are the adaptations which are required in self-pollinated plants?

What are the different adaptations shown by bird-pollinated flowers?

Explain water pollination in detail with its types.

For which of the following attractants and rewards are required?

Wind pollination is common in ______.

From among the situations given below, choose the one that prevents both autogamy and geitonogamy.

A particular species of plant produces light, non-sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination by ______.

Cleistogamous flowers are ______.

Both chasmogamous and cleistogamous flowers are present in ______.

Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by ______.

A dioecious flowering plant prevents both ______.

Chief pollinators of agricultural crops are ______.

Triple fusion in Capsella bursa pastoris is fusion of male gamete with ______.

Pollination refers to the

Which type of pollination does Figure 12.1 indicate?

Which one of the following may require pollinators, but is genetically similar to autogamy?

Advantage of cleistogamy is:

In which one of the following pollination is autogamous?

Correct definition of pollination is ______

The term used for transfer of pollen grains from anthers of one plant to stigma of a different plant which, during pollination, brings genetically different types of pollen grains to stigma, is ______

Choose the correct statement from the following:

Describe any three adaptations in anemophilous flowers.

Consider the following statements depicting adaptation of flowers to carryout successful pollination.

  1. Stigma is long, sticky and unwettable.
  2. Sepals, petals or perianth (if present) have waxy coating.
  3. Stamens with long filament and versatile anthers.
  4. Tubular corolla is seen.
  5. Flowers are noctumal.

Which of the above statements clearly depict hydrophily?

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

Pollination in water lilies is carried out by ______.

Which of the following floral adapation are adapted by hydrophilous flowers?

Mention any one example of the hydrophilous flower.

What is hypohydrophily?

Complete the following table:

Sr. Type of pollination Agent Kind of flower Examples
(i) ______ Wind ______ Maize
(ii) Chiropterophily ______ Dull colour, with strong fragrance, abundant nectar Adansonia
(iii) Entamophily Insects ______ Rose/Jasmine
(iv) Ornithophily ______ Brightly coloured, large and showy. They secrete profuse, dilute n ectar ______

Briefly discuss any two methods by which plants avoid self-pollination.


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