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Q. No.Male gametophyte with least number of cells is present in:
1. Pteris
2. Funaria
3. Lilium
4. Pinus
Subtopic: Stamen: Male Gametophyte |
Level 3: 35%-60%
AIPMT - 2014
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Perisperm differs from endosperm in:
| 1. | having no reserve food |
| 2. | being a diploid tissue |
| 3. | its formation by fusion of secondary nucleus with several sperms |
| 4. | being a haploid tissue |
Subtopic: Seed |
64%
Level 2: 60%+
AIPMT - 2013
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What is the fate of the male gametes discharged in the synergid?
| 1. | One fuses with the egg and the other fuses with central cell nuclei |
| 2. | One fuses with the egg and the other(s) degenerate(s) in the synergid |
| 3. | All fuse with the egg |
| 4. | One fuses with the egg and the other(s) fuse(s) with a synergid nucleus |
Subtopic: Double Fertilization |
87%
Level 1: 80%+
NEET - 2019
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Which one of the following statements is not true?
| 1. | Pollen grains are rich in nutrients and they are used in the form of tablets and syrups |
| 2. | Pollen grains of some plants cause severe allergies and bronchial afflictions in some people |
| 3. | The flowers pollinated by flies and beetles secrete foul odour to attract them |
| 4. | Honey is made by bees by digesting pollen collected from flowers |
Subtopic: Stamen: Male Gametophyte |
79%
Level 2: 60%+
NEET - 2015
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Seed formation without fertilization in flowering plants involves the process of?
| 1. | budding | 2. | somatic hybridization |
| 3. | apomixis | 4. | sporulation |
Subtopic: Apomixis & Polyembryony |
96%
Level 1: 80%+
NEET - 2016
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A dioecious flowering plant prevents both:
1. Autogamy and geitonogamy
2. Geitonogamy and xenogamy
3. Cleistogamy and xenogamy
4. Autogamy and xenogamy
Subtopic: Pollination & Outbreeding Devices |
87%
Level 1: 80%+
NEET - 2017
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Double fertilization is:
| 1. | Fusion of two male gametes of a pollen tube with two different eggs |
| 2. | Fusion of one male gamete with two polar nuclei |
| 3. | Fusion of two male gametes with one egg |
| 4. | Syngamy and triple fusion |
Subtopic: Double Fertilization |
83%
Level 1: 80%+
NEET - 2018
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In which one of the following, both autogamy and geitonogamy are prevented?
1. Wheat
2. Papaya
3. Castor
4. Maize
Subtopic: Pollination & Outbreeding Devices |
84%
Level 1: 80%+
NEET - 2019
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The plant parts which consist of two generations, one within the other, are:
| (a) | Pollen grains inside the anther |
| (b) | Germinated pollen grain with two male gametes |
| (c) | Seed inside the fruit |
| (d) | Embryo sac inside the ovule |
1. (a), (b) and (c)
2. (c) and (d)
3. (a) and (d)
4. (a) only
Subtopic: Pre-fertilisation: Structures and Events |
Level 3: 35%-60%
NEET - 2020
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Which one of the following statements is wrong?
| 1. | Vegetative cell is larger than generative cell |
| 2. | Pollen grains in some plants remain viable for months |
| 3. | Intine is made up of cellulose and pectin |
| 4. | When pollen is shed at a two-celled stage, double fertilization does not take place |
Subtopic: Pre-fertilisation: Structures and Events |
92%
Level 1: 80%+
AIPMT - 2012
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