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WorksheetsSEXUAL REPRODUCTION IN FLOWERING PLANTS 2
Total questions: 20
Worksheet time: 10mins
Choose the correct characteristics of cells of tapetum from the following:
Dense cytoplasm
Multi-nucleate
Large sized Vacuole
Thick Cell Wall
The process of formation of microspores from a pollen mother cell (PMC) through meiosis is called
(a)
The cell that gives rise to male gametes in the pollen grain is
Vegetative Cell
Generative Cell
Total number of microsporangia present in a dithecous anther are
4
6
2
1
___________ tissue is responsible for producing pollen grains in microsporangia.
Endothecium
Tapetum
Epidermis
Sporogenous
The exine is made up of
(a)
The ploidy of generative cell in a pollen grain is
haploid
diploid
triploid
tetraploid
Process in which seeds develop unfertilised female gamete
Polyembryony
Agamospermy
Apomixis
Parthenogenesis
The male reproductive part is known as ........................
Pistil
Stamen
Petal
Carpel
A complete pollen grain consists of ........................................
Tube nucleus only
Generative nucleus only
Tube nucleus and generative nucleus
Male gametes
How many male gamete are formed in one pollen grain?
2
4
6
8
Which nucleus responsibles in the formation of pollen tube from the pollen grain?
Generative nucleus
Tube nucleus
Polar nuclei
Triploid nuclei
Which one of the following statement is correct:
Hard outer layer of pollen grain is called intine.
Sporogenous tissue is haploid
Endothecium produces microspores
Tapetum nourishes the developing pollen.
The major cause of pollen allergy is due to
Pistia
Cladophora
Parhenium
Mirabilis
Pollen viability for rice and wheat plant is
30 hours
3 months
30 minutes
30 seconds
What is incorrect for generative cell?
Floats in cytoplasm of vegetative cell
Having abundant food reserve
Spindle shaped
Has dense cytoplasm and a nucleus
The process of the pollen fusing with the ovule is called ________________.
pollination
fertilisation
germination
reproduction
Number of germ pores in dicots are
1
2
3
4
Pollen grains germinates
in anther
in ovary
on stamen
on stigma
Pollen tube is produced by
Exine
Intine
Both exine & intine
Generative cell
Sporopollenin
