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Class 12 Biology
Sexual Reproduction In Flowering Plants
Quiz 1
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Pollination in Lotus is:
0%
By water
0%
By wind
0%
By insect
0%
All of these
Explanation
By water
Haploid plants develop by pollen are called ……..
0%
Emasculation
0%
Parthenocarpy
0%
androgenesis
0%
somatic hybridization
Explanation
somatic hybridization
Closed flower:
0%
Decliny
0%
Cteistogamy
0%
Dichogamy
0%
None of these
Explanation
Cteistogamy
Demerit of self pollinatlon is:
0%
Unisexua
0%
Dichoganty
0%
Hetorostyle
0%
None of these
Explanation
Dichoganty
Which structure is not found in Angiosperm?
0%
Archegonium
0%
Carpel
0%
Anther
0%
Magagametophyte
Explanation
Archegonium
Normal Embryosac of Angiosperm is :
0%
Unicellular
0%
Bicelled
0%
Penta celled
0%
Seven called
Explanation
Unicellular
Commonly in a mature fertilized ovule n, 2n, 3n conditions are respectively found in :
0%
Endosperm, nucellus and egg
0%
Egg. antipodals and endosperm
0%
Integuments, synergids and egg
0%
Egg, nucellus and endosperm
Explanation
Egg, nucellus and endosperm
After fertilization ovule develops into:
0%
Integument
0%
Seed
0%
Embryo
0%
Endosperm
Explanation
Seed
Parthenogenesis is common in :
0%
Grape
0%
Mango
0%
Citrus
0%
Litchi
Explanation
Grape
An orthrotropous ovule is one in which micropyle and chalaza are :
0%
Oblique to funiculus
0%
At right angles to funiculus
0%
In straight line with funiculus
0%
Parallel to funiculus
Explanation
In straight line with funiculus
In an ovule meiotic takes place in:
0%
Nucellus
0%
Megaspore mother cell
0%
Megaspore
0%
Archesporium
Explanation
Megaspore mother cell
In Capsella the endosperm in generally:
0%
Haploid
0%
Diploid
0%
Triploid
0%
Tetraploid
Explanation
Triploid
All of the following structures are found in angiosperms except ?
0%
Archegonium
0%
Pistil
0%
Anther
0%
Megagametophyte
Explanation
Archegonium
Who proved that the cells are totipotent?
0%
White
0%
Skoog
0%
Miller
0%
Steward
Explanation
Steward
A typical angiospermic embryo sac is usually:
0%
One-celled
0%
Two-celled
0%
Five-celled
0%
seven-celled
Explanation
seven-celled
Fatheroflndian Angiosperm Embnology is:
0%
B. M. John
0%
B. G L. Swami
0%
R.N. Kapil
0%
P. Maheshwari
Explanation
P. Maheshwari
If cotyledons are brought above the soil the germination is:
0%
Hypogeal
0%
Epigeal
0%
Vivipaiy
0%
None of these
Explanation
Epigeal
Polymbryony occurs in:
0%
Maize
0%
Citrus
0%
Corchorus
0%
Carthamus
Explanation
Citrus
In Monocots, grafting is almost impossible because they lack :
0%
Cambium
0%
Ground tissue
0%
Vascular bundle
0%
Parenchymatous cells
Explanation
Cambium
Double fertilization in angiosperms was discovered by:
0%
Strassburger
0%
J. C. Bose
0%
Maheshwari
0%
Nawaschin
Explanation
Nawaschin
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