Q. No.Transfer of pollens from the anther to the stigma of the same flower is called:
| 1. | Autogamy | 2. | Geitonogamy |
| 3. | Xenogamy | 4. | Cleistogamy |
Subtopic: Pollination & Outbreeding Devices |
91%
Level 1: 80%+
Hints
Choose the correct statement from the following:
| 1. | Cleistogamous flowers always exhibit autogamy |
| 2. | Chasmogamous flowers always exhibit geitonogamy |
| 3. | Cleistogamous flowers exhibit both autogamy and geitonogamy |
| 4. | Chasmogamous flowers never exhibit autogamy |
Subtopic: Pollination & Outbreeding Devices |
86%
Level 1: 80%+
Hints
Geitonogamy is:
| 1. | Functionally cross–pollination but genetically autogamy |
| 2. | Functionally autogamy but genetically cross-pollination |
| 3. | Functionally and genetically autogamy |
| 4. | Functionally and genetically cross-pollination |
Subtopic: Pollination & Outbreeding Devices |
90%
Level 1: 80%+
Hints
The only type of pollination which during pollination brings a genetically different type of pollen grains to the stigma is:
| 1. | Chasmogamy | 2. | Cleistogamy |
| 3. | Geitonogamy | 4. | Xenogamy |
Subtopic: Pollination & Outbreeding Devices |
92%
Level 1: 80%+
Hints
Wind-pollinated flowers are characterized by the following, except:
| 1. | Light and non-sticky pollen grains |
| 2. | Well-exposed stamens |
| 3. | Many ovules in each ovary |
| 4. | Large, often-feathery stigma |
Subtopic: Pollination & Outbreeding Devices |
77%
Level 2: 60%+
Hints
The majority of water plants like water hyacinth and water lily are pollinated by:
| 1. | Water | 2. | Wind |
| 3. | Insects | 4. | Both 2 and 3 |
Subtopic: Pollination & Outbreeding Devices |
80%
Level 1: 80%+
Hints
The diagram shows:
1. Pollination by water in Vallisneria
2. Pollination by water in Zostera
3. Pollination by wind in Water hyacinth
4. Pollination by the wind in Water lily
1. Pollination by water in Vallisneria
2. Pollination by water in Zostera
3. Pollination by wind in Water hyacinth
4. Pollination by the wind in Water lily
Subtopic: Pollination & Outbreeding Devices |
82%
Level 1: 80%+
Hints
From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
| 1. | Monoecious plant bearing unisexual flowers |
| 2. | Dioecious plant bearing only male or female flowers |
| 3. | Monoecious plant with bisexual flowers |
| 4. | Dioecious plant with bisexual flowers |
Subtopic: Pollination & Outbreeding Devices |
77%
Level 2: 60%+
Hints
Whether a pollen grain will be able to germinate on a stigma is primarily decided by:
| 1. | The stage at which the pollen is shed |
| 2. | Recognition by the stigma |
| 3. | Maturity of the egg cell in the embryosac |
| 4. | Environmental conditions |
Subtopic: Pollination & Outbreeding Devices |
84%
Level 1: 80%+
Hints
Which of the following is/are a marine plant pollinated by water?
| 1. | Vallisneria | 2. | Hydrilla |
| 3. | Zostera | 4. | Both 1 and 2 |
Subtopic: Pollination & Outbreeding Devices |
62%
Level 2: 60%+
Hints
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