WorksheetsSexual Reproduction in Flowering Plants
Total questions: 21
Worksheet time: 11mins
Wind pollination requires that the pollen grains should be _________ so that they can be transported in wind currents.
Light
Non sticky
Sticky
Both A and B
The hilum is a scar on the
seed, where funicle was attached
fruit, where it was attached to pedicel
fruit, where style was present
seed, where micropyle was present
Function of filiform apparatus is to :
Recognize the suitable pollen at stigma
Stimulate division of generative cell
Producer nectar
Guide the entry of pollen tube
Which one of the following generates new genetic combinations leading to variation?
Vegetative reproduction
Parthenogenesis
Sexual reproduction
Nucellar polyembryony
In majority of angiosperms
egg has a filiform apparatus
there are numerous antipodal cells
reduction division occurs in the megaspore mother cells
a small central cell is present in the embryo sac
Which one of the following statements is correct?
Sporogenous tissue is haploid
Endothecium produces the microspores
Tapetum nourishes the developing pollen
Hard outer layer of pollen is called intine
Proximal end of the filament of stamen is attached to the
connective
placenta
thalamus or petal
anther
In which one of the following, the male and female gametophytes don't have free-living independent existence?
Pteris
Funaria
Polytrichum
Marchantia
There are 20 chromosomes in each leaf cell of a maize plant. What is the number of chromosomes in the male nucleus of a pollen grain of maize?
5
10
20
40
Which of the following in not an insect pollinated plant?
Amorphophallus
Salvia
Water hyacinth
Wheat
Which of the following plant is monoecious?
Papaya
Date Palm
Coconut
Both A and B
Which of the following are the characteristics of a typical angiospermic anther ?
Bilobed, monothecous, dithecous, tetragonal, tetrasporangiate, monolobed.
Bilobed, monothecous, tetrasporangiate.
Monothecous, monolobed, tetragonal.
Bilobed, dithecous, tetragonal, tetrasporangiate.
Monolobed, dithecous, tetrasporangiate.
A pollen mother cell undergoes how many divisions to form a mature gametophyte ?
3 mitosis and 1 meiosis
1 mitosis and 2 meiosis
2 mitosis and 1 meiosis
2 mitosis and 2 meiosis
Papaver and Michelia flowers are characterized by the presence of
Apocarpous and syncarpous gynoecium respectively.
Syncarpous and apocarpous gynoecium respectively.
Monocarpellary and multicarpellary gynoecium respectively.
None.
A mature female gametophyte contains which stage?
7-celled and 8-nucleated stage
8- nucleated and 7-celled stage
7-celled and 7-nucleus stage
None of the above
Bisexual chasmogamous flowers shows
Autogamy
Geitonogamy
Xenogamy
All the above
An anther having four microsporocytes shall produce pollen grains
24
12
8
16
Which among the following is a haploid structure?
Pollen Grain
Embryo Sac
Vegetative Cell
Intine
If each microsporangium, in a typical angiospermic anther consists of 40 microspore/pollen mother cells, the number of pollen grains that can be produced from this anther will be
80
160
320
640
_____________ is a post-fertilization process.
Gametogenesis
Gamete transfer
Embryogenesis
Suspensor Development
During porogamy the pollen tube enters into the ovule through the
Integument
Chalaza
Micropylar end
Funicle
