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Sexual Reproduction In Flowering Plants

247 Questions Start Allen Test
All Exams Allen Errorless
Q76 Allen 7. SEED, APOMIXIS AND POYEMBRYONY MCQ
In epigeal germination cotyledons come up above the soil due to growth of :-
A.
Radicle
B.
Plumule
C.
Epicotyl
D.
Hypocotyl
Q77 Allen 7. SEED, APOMIXIS AND POYEMBRYONY MCQ
In which part of embryo maximum growth takes place in hypogeal germination :-
A.
Plumule
B.
Radicle
C.
Epicotyl
D.
Hypocotyl
Q78 Allen 7. SEED, APOMIXIS AND POYEMBRYONY MCQ
In seeds, characterised by hypogeal germination, cotyledons generally do not becomes green because :-
A.
They lack mitochondria
B.
They developed very early
C.
They contain inhibitor
D.
They remain below the soil
Q79 Allen 7. SEED, APOMIXIS AND POYEMBRYONY MCQ
Adventive embryony in mango is due to :-
A.
Nucellus
B.
Integuments
C.
Zygotic embryo
D.
Fertilized egg
Q80 Allen 7. SEED, APOMIXIS AND POYEMBRYONY MCQ
The aleurone layer in maize grain is specially rich in :-
A.
Protein
B.
Starch
C.
Lipids
D.
Auxins
Q81 Allen 7. SEED, APOMIXIS AND POYEMBRYONY MCQ
Nucellar polyembryony is reported in species of :
A.
Citrus
B.
Gossypium
C.
Triticum
D.
Brassica
Q82 Allen 7. 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
Q83 Allen 7. 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
Q84 Allen 7. 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
Q85 Allen 7. 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
Q86 Allen 7. SEED, APOMIXIS AND POYEMBRYONY MCQ
Seed coat is not thin, membranous in :-
A.
Gram
B.
Maize
C.
Coconut
D.
Groundnut
Q87 Allen 7. SEED, APOMIXIS AND POYEMBRYONY MCQ
After fertilization the integument of ovule changes into :-
A.
Seed coat
B.
Tegmen
C.
Fruit
D.
Testa
Q88 Allen 7. SEED, APOMIXIS AND POYEMBRYONY MCQ
After fertilization the seed is developed from:
A.
Ovule
B.
Ovary
C.
Nucellus
D.
Endosperm
Q89 Allen 7. SEED, APOMIXIS AND POYEMBRYONY MCQ
After fertilization seed coat is formed by :-
A.
Chalaza
B.
Ovule
C.
Integument
D.
Embryo sac
Q90 Allen 7. SEED, APOMIXIS AND POYEMBRYONY MCQ
Tigellum represents :-
A.
Testa
B.
Tegmen
C.
Both of the above
D.
Main axis of the embryo
Q91 Allen 7. 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
Q92 Allen 8. 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.
Q93 Allen 8. PYQ MCQ
Male gametophyte with least number of cell is present in :-
A.
Pteris
B.
Funaria
C.
Lilium
D.
Pinus
Q94 Allen 8. PYQ MCQ
Pollen tablets are available in the market for:-
A.
In vitro fertilization
B.
Breeding programmes
C.
Supplementing food
D.
Ex situ conservation
Q95 Allen 8. 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
Q96 Allen 8. PYQ MCQ
Non-albuminous seed is produced in :-
A.
Maize
B.
Castor
C.
Wheat
D.
Pea
Q97 Allen 8. PYQ MCQ
Transmission tissue is characteristic feature of :-
A.
Solid style
B.
Dry stigma
C.
Wet stigma
D.
Hollow style
Q98 Allen 8. PYQ MCQ
Which one of the following may require pollinators, but is genetically similar to autogamy?
A.
Xenogamy
B.
Apogamy
C.
Cleistogamy
D.
Geitonogamy
Q99 Allen 8. 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.
Q100 Allen 8. 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