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WorksheetsReproduction in flowering plants
Total questions: 25
Worksheet time: 13mins
There are 10 flowers in one individual plant of Crotolaria (having 10 stamens in each flower). In each microsporangium of every stamen of all the flowers, there are 30 MMC. How many pollengrains are formed from that plant?
48,000
24,000
10,000
4,000
Which of the following have uni sexual flowers
Papaya
Coconut
Palms
All of the above
1. Male gametes in angiosperms are formed by the division of
Microspore
Microspore mother cell
Generative cell
Vegetative Cell
Flowers which have single ovule in the ovary are packed into an inflorescence are usually pollinated by:
Bees
Wind
Bats
Water
A dioecious flowering plants prevents both:
Autogamy and geitonogamy
Geitonogamy and Xenogamy
Cleistogamy and xenogamy
Autogamy and xenogamy
Pollen grains represent
The future sporophyte
Sporophyte
Gametophyte
male gametophyte
Attractants and rewards are required for
Entamophily
Hydrophily
Cleistogamy
Anemophily
Functional megaspore in angiosperms develops into:
Embryo
Endosperm
Ovule
Embryosac
The phenomenon of male and female structures maturing at two different times is
Dichogamy
Heterostyly
Herkogamy
Dioecious
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.
Advantage of Cleistogamy is
Higher genetic variability
More vigorous offspring
No dependence of pollinators
Vivipary
When pollen is transferred from anther of a flower to stigma of another flower of the same plant it is referred to as:
Allogamy
Xenogamy
Geitonogamy
Autogamy
Stamen show homology with
Megasporophyll
Microsporophyll
Gametophyte
Male cone
The plant part consists of two generations one within the other, is
Germinated pollen grain
Embryo
Seed
Unfertilized ovule
One of them cannot exhibit both autogamy and geitonogamy:
Castor
Maize
Papaya
Cucumber
In flowering plants a mature gametophyte is derived from a pollen mother cell by:
Two meiotic and two mitotic divisions
Three mitotic and one meiotic divisions
Single meiotic and one mitotic division
One meiotic and two mitotic divisions
The hilum is a scar on the:
Seed where funicle was attached
Fruits where it was attached to pedicel
Fruit, where style was present
Seed where micropyle was present
The arrangement of nuclei in a normal Embryosac in the dicot plant is:
2+3+3
3+2+3
2+4+2
3+3+2
Which one of the following pairs in angiosperms are diploid and triploid respectively:
Polar nucleus and Secondary Nucleus
Micro spore mother cell and egg cell
Secondary nucleus and endosperm
Endosperm and antipodal cells
Which one of the following ma requires pollinators, but genetically similar to autogamy:
Cleistogamy
Xenogamy
Apogamy
Geitonogamy
The direction of micropyle in anatropous ovule
Downward
Right
Upward
Left
Double fertilization is discovered by:
S. G. Navaschin
P. Maheshwari
Strasburger
Both A & B
Which among the following plant is pollinated by birds:
Champaka
Jasmine
Butea
Tomato
Which one of the following statements is wrong?
When pollen is shed at two-called stage, double fertilization take place.
Pollen grains in some plants remain viable for months
Intine is made up of cellulose and pectin
Vegetative cell is larger than generative cell
Chirapterophily is
Pollination by Ants
Pollination by birds
Pollination by bats
Pollination by snails
