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Sexual Reproduction In Flowering Plants

554 Questions Start Allen Test
All Exams Allen Errorless
Q326 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
Adventive embryony in mango is due to :-
A.
Nucellus
B.
Integuments
C.
Zygotic embryo
D.
Fertilized egg
Q327 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
The aleurone layer in maize grain is specially rich in :-
A.
Protein
B.
Starch
C.
Lipids
D.
Auxins
Q328 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
Nucellar polyembryony is reported in species of :
A.
Citrus
B.
Gossypium
C.
Triticum
D.
Brassica
Q329 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
Seed dormancy allows the plants to :-
A.
Overcome unfavourable climatic condition
B.
Develop healthy plants
C.
Reduce viability
D.
Prevent deterioration of seeds
Q330 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
Which are the external conditions required for seed germination?
A.
Oxygen, carbon dioxide and suitable temperature
B.
Oxygen, light and suitable temperature, and COā‚‚
C.
Light, moisture and suitable temperature
D.
Oxygen, moisture and suitable temperature
Q331 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
What is the function of germ pore?
A.
Initiation of pollen tube
B.
Release of male gametes
C.
Emergence of radicle
D.
Absorption of water for seed germination
Q332 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
Perisperm differs from endosperm in:-
A.
Its formation by fusion of secondary nucleus with several sperms
B.
Being a haploid tissue
C.
Having no reserve food
D.
Being a diploid tissue
Q333 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
Seed coat is not thin, membranous in :-
A.
Gram
B.
Maize
C.
Coconut
D.
Groundnut
Q334 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
After fertilization the integument of ovule changes into :-
A.
Seed coat
B.
Tegmen
C.
Fruit
D.
Testa
Q335 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
After fertilization the seed is developed from:
A.
Ovule
B.
Ovary
C.
Nucellus
D.
Endosperm
Q336 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
After fertilization seed coat is formed by :-
A.
Chalaza
B.
Ovule
C.
Integument
D.
Embryo sac
Q337 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
Tigellum represents :-
A.
Testa
B.
Tegmen
C.
Both of the above
D.
Main axis of the embryo
Q338 Allen SEED, APOMIXIS AND POYEMBRYONY MCQ
Endosperm is completely consumed by developing embryo before the seed maturationofex-albuminous/nonendospermic seeds, are found in:-
A.
Pea, ground nut, beans
B.
Coconut, castor
C.
Maize, wheat, pea
D.
Coconut, wheat
Q339 Allen PYQ MCQ
Geitonogamy involves :-
A.
fertilization of a flower by the pollen from another flower of the same plant.
B.
fertilization of a flower by the pollen from the same flower.
C.
fertilization of a flower by the pollen from a flower of another plant in the same population.
D.
fertilization of a flower by the pollen from a flower of another plant belonging to a distant population.
Q340 Allen PYQ MCQ
Male gametophyte with least number of cell is present in :-
A.
Pteris
B.
Funaria
C.
Lilium
D.
Pinus
Q341 Allen PYQ MCQ
Pollen tablets are available in the market for:-
A.
In vitro fertilization
B.
Breeding programmes
C.
Supplementing food
D.
Ex situ conservation
Q342 Allen PYQ MCQ
Function of filiform apparatus is :-
A.
Recognize the suitable pollen at stigma
B.
Stimulate division of generative cell
C.
Produce nectar
D.
Guide the entry of pollen tube
Q343 Allen PYQ MCQ
Non-albuminous seed is produced in :-
A.
Maize
B.
Castor
C.
Wheat
D.
Pea
Q344 Allen PYQ MCQ
Transmission tissue is characteristic feature of :-
A.
Solid style
B.
Dry stigma
C.
Wet stigma
D.
Hollow style
Q345 Allen PYQ MCQ
Which one of the following may require pollinators, but is genetically similar to autogamy?
A.
Xenogamy
B.
Apogamy
C.
Cleistogamy
D.
Geitonogamy
Q346 Allen PYQ MCQ
Which one of the following statements is not true?
A.
Pollen grains of some plants cause severe allergies and bronchial afflictions in some people.
B.
The flowers pollinated by flies and bats secrete foul odour to attract them.
C.
Honey is made by bees by digesting pollen collected from flowers.
D.
Pollen grains are rich in nutrients, and they are used in the form of tablets and syrups.
Q347 Allen PYQ MCQ
The hilum is a scar on the :-
A.
Fruit, where it was attached to pedicel
B.
Fruit, where style was present
C.
Seed, where micropyle was present
D.
Seed, where funicle was attached
Q348 Allen PYQ MCQ
Which of the following are the important floral rewards to the animal pollinators?
A.
Nectar and pollen grains
B.
Floral fragrance and calcium crystals
C.
Protein pellicle and stigmatic exudates
D.
Colour and large size flower
Q349 Allen PYQ MCQ
Male gametophyte in angiosperms produces:-
A.
Three sperms
B.
Two sperms and a vegetative cell
C.
Single sperm and a vegetative cell
D.
Single sperm and two vegetative cells
Q350 Allen PYQ MCQ
Coconut water from a tender coconut is :-
A.
Degenerated nucellus
B.
Immature embryo
C.
Free nuclear endosperm
D.
Innermost layers of the seed coat