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WorksheetsSexual Reproduction in Flowering Plants
Total questions: 42
Worksheet time: 44mins
Stamen consists of
Anther
Stigma
Style
Filament
Ovary
A dithecous anther is made up of ____ number of theca.
4
6
2
1
Total number of microsporangia present in a dithecous anther are
4
6
2
1
The layer in the wall of the microsporangia that helps to nourish pollen grains is
Epidermis
Endothecium
Middle layers
Tapetum
Choose the correct characteristics of cells of tapetum from the following:
Dense cytoplasm
Multi-nucleate
Large sized Vacuole
Thick Cell Wall
___________ tissue is responsible for producing pollen grains in microsporangia.
Endothecium
Tapetum
Epidermis
Sporogenous
The process of formation of microspores from a pollen mother cell (PMC) through meiosis is called
(a)
Choose the wall layers of a pollen grain from the following:
Outer integument
Exine
Inner integument
Intine
The exine is made up of
(a)
Choose the correct composition of intine
Cellulose
Hemicellulose
Pectin
Lignin
Pollen grain consists of vegetative cell and generative cell.
True
False
The cell that gives rise to male gametes in the pollen grain is
Vegetative Cell
Generative Cell
The ploidy of generative cell in a pollen grain is
haploid
diploid
triploid
tetraploid
The different parts of the pistil are
Stigma
Anther
Style
Filament
Ovary
Match the correct combination of structures formed post fertilization in an ovule.
1-a, 2-b, 3-c, 4-d, 5-e
1-d, 2-c, 3-e, 4-a, 5-b
1-d, 2-c, 3-e, 4-b, 5-a
1-e, 2-d, 3-c, 4-b, 5-a
The method of embryo sac formation in flowering plants is termed as
Monosporic Development
Disporic Development
Tetrasporic Development
Trisporic Development
A typical angiosperm embryo sac, at maturity shows
8 cells, 7 nuclei
8 cells, 8 nuclei
7 cells, 7 nuclei
8 nuclei, 7 cells
The type of pollination seen in Case 1 is
Autogamy
Geitonogamy
Xenogamy
The type of pollination seen in Case 2 is
Autogamy
Geitonogamy
Xenogamy
The type of pollination seen in Case 3 is
Autogamy
Geitonogamy
Xenogamy
Exposed anthers and stigma are seen in
Chasmogamous Flowers
Cleistogamous Flowers
Complete autogamy is present in
Chasmogamous Flowers
Cleistogamous Flowers
Cleistogamous flowers produce assured seed-set even in the absence of pollinators.
True
False
The flowers that require synchrony in pollen release and stigma receptivity are
Chasmogamous Flowers
Cleistogamous Flowers
The most probable agent of pollination for this flower is
Wind
Water
Insects
The most probable agent of pollination for this flower is
Wind
Water
Insects
Dichogamy means
Pollen release and stigma receptivity are not synchronized
Placement of stamen and pistil at different levels
Prevention of Self- pollination
Production of Unisexual Flowers
Herkogamy means
Pollen release and stigma receptivity are not synchronized
Placement of stamen and pistil at different levels
Prevention of Self- pollination
Production of Unisexual Flowers
Which of the following is incompatible pollen grain for a self incompatible species of flower?
Pollen grain from stamen of different flower in same plant
Pollen grain from stamen of same flower
Pollen grain from stamen of different flower from different plant
This is an example of
Endospermic Seed
Non- endospermic Seed
Scutellum is
Dicot Cotyledon
Monocot Cotyledon
Mature Nucellus
Endosperm of Castor
The portion of embryonal axis above the level of cotyledons is
Radicle
Plumule
Epicotyl
Hypocotyl
The portion of embryonal axis below the level of cotyledons is
Radicle
Plumule
Epicotyl
Hypocotyl
Coleorrhiza protects
Plumule
Radicle
Epicotyl
Hypocotyl
Coleoptile protects
Plumule
Radicle
Epicotyl
Hypocotyl
Residual and Persistant Nucellus is called
Endosperm
Perisperm
Pericarp
Endocarp
Fruits that are developed without fertilization are called
False Fruits
True Fruits
Parthenocarpic Fruits
Polyembryonic Fruits
These are examples of
False Fruits
True Fruits
Parthenocarpic Fruits
Polyembryonic Fruits
Apomixis is the process by which
seeds are produced after fertilization
seeds are produced without fertilization
fruits are produced after fertilization
fruits are produced after pollination
Occurrence of more than one embryo in a seed is referred to as
Apomixis
Parthenogenesis
Polyembryony
Embryogeny
The number of chromosomes in the shoot tip cells of a maize plant is 20.
The number of chromosomes in the microspore mother cells of the same plant shall be:
20
10
40
15
The male gametes of rice plant have 12 chromosomes in their nucleus. The chromosome number in the female gamete, zygote and the cells of the seedling will be, respectively,
12, 24, 12
24, 12, 12
12, 24, 24
24, 12, 24
