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WorksheetsSexual Reproduction in Flowering plants
Total questions: 20
Worksheet time: 15mins
A typical anther is ______________
one lobed and monothecous
bilobed and dithecous
Each lobe of anther has _______ microsporangium
1
2
4
Microsporangia develops to form __________
Ovule
Pollen sacs
Each microsporangium are surrounded by ______number of wall layers of anther
2
3
4
The four wall layers surrounding the microsporangium are ________________
epidermis, endothecium, middle layers and tapetum
epidermis, hypodermis, cortex, endodermis
A young anther has group of homogenous tissue at the centre of microsporangium, that are called as ____________
nucellus
microspore tetrad
sporogenous tissue
Microsporogenesis means formation of __________
Microspores from Microspore mother cell
Megaspores from megaspore mother cell
The exine of pollen grain is made up of __________
sporopollenin
cellulose and pectin
When the pollen grain is mature it contains two cells called ____________
Bigger vegetative cell and smaller generative cell
Smaller vegetative cell and bigger generative cell
The _________________ cells divides mitotically to form two male gametes.
Vegetative cell
Generative cell
Which of the following kinds of pollination involves genetically different pollen grains and stigma.
autogamy
geitonogamy
xenogamy
Which of the following aquatic plants are not pollinated by water, but they are pollinated by insects.
Water lily and water hyacinth
Vallisneria, hydrilla, Zostera
________________________ is known as female gametophyte, as the structure contains the female gamete of the plant.
Megasporangium also called as ovule
Embryo Sac
During megasporogenesis, megaspores are produced meiotically from which of the following?
embryo sac
microspore mother cells
megaspore mother cells
A plant produces nectar less, fragrant less, colour less, flowers with ribbon like pollen grains. Which of the following types of pollinating agents pollinates such flowers?
water
wind
insect
Which of the following types of flowers do plants like Viola, Commelina, Oxalis have?
Cleistogamous
Chasmogamous
Both
Egg apparatus in embryo sac is found in which pole of ovule?
Micropylar pole
Chalazal pole
Which of the following options is true about embryo sac? It has
six cells and eight nuclei
seven cells and eight nuclei
seven cells and seven nuclei
What is the ploidy of nucellus, sporogenous tissue?
Haploid
Diploid
What is the ploidy of pollen grain, embryo sac?
Haploid
Diploid
