341919
The tips on the ovule where integument are absent are called
1 Micropyle
2 Germ pore
3 Both (1) and (2)
4 Integuments
Explanation:
Integuments encircle the nucellus except at the tip where a small opening called the micropyle is organised.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341920
An ovule, which becomes curved so that the nucellus and embryo sac lie at right angles to the funicle is
1 Hemitropous
2 Campylotropous
3 Anatropous
4 Orthotropous
Explanation:
In campylotropous the body of the ovule is curved but the embryo sac is straight.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341921
Antipodal cells are present in which end of the embryo sac?
1 Chalazal end
2 Micropylar end
3 They are situated in the centre
4 None of the above
Explanation:
Antipodal cells are present at the chalazal end. Antipodals are nutritive in function. It nourishes the embryo sac.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341922
In a flower, if the megaspore mother cell forms megaspores without undergoing meiosis and if one of the megaspores develops into an embryo sac, its nuclei would be:
1 Haploid
2 Diploid
3 A few haploid and a few diploid
4 With varying ploidy.
Explanation:
Since no meiosis takes place so no change in ploidy will take place.
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BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341919
The tips on the ovule where integument are absent are called
1 Micropyle
2 Germ pore
3 Both (1) and (2)
4 Integuments
Explanation:
Integuments encircle the nucellus except at the tip where a small opening called the micropyle is organised.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341920
An ovule, which becomes curved so that the nucellus and embryo sac lie at right angles to the funicle is
1 Hemitropous
2 Campylotropous
3 Anatropous
4 Orthotropous
Explanation:
In campylotropous the body of the ovule is curved but the embryo sac is straight.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341921
Antipodal cells are present in which end of the embryo sac?
1 Chalazal end
2 Micropylar end
3 They are situated in the centre
4 None of the above
Explanation:
Antipodal cells are present at the chalazal end. Antipodals are nutritive in function. It nourishes the embryo sac.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341922
In a flower, if the megaspore mother cell forms megaspores without undergoing meiosis and if one of the megaspores develops into an embryo sac, its nuclei would be:
1 Haploid
2 Diploid
3 A few haploid and a few diploid
4 With varying ploidy.
Explanation:
Since no meiosis takes place so no change in ploidy will take place.
341919
The tips on the ovule where integument are absent are called
1 Micropyle
2 Germ pore
3 Both (1) and (2)
4 Integuments
Explanation:
Integuments encircle the nucellus except at the tip where a small opening called the micropyle is organised.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341920
An ovule, which becomes curved so that the nucellus and embryo sac lie at right angles to the funicle is
1 Hemitropous
2 Campylotropous
3 Anatropous
4 Orthotropous
Explanation:
In campylotropous the body of the ovule is curved but the embryo sac is straight.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341921
Antipodal cells are present in which end of the embryo sac?
1 Chalazal end
2 Micropylar end
3 They are situated in the centre
4 None of the above
Explanation:
Antipodal cells are present at the chalazal end. Antipodals are nutritive in function. It nourishes the embryo sac.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341922
In a flower, if the megaspore mother cell forms megaspores without undergoing meiosis and if one of the megaspores develops into an embryo sac, its nuclei would be:
1 Haploid
2 Diploid
3 A few haploid and a few diploid
4 With varying ploidy.
Explanation:
Since no meiosis takes place so no change in ploidy will take place.
341919
The tips on the ovule where integument are absent are called
1 Micropyle
2 Germ pore
3 Both (1) and (2)
4 Integuments
Explanation:
Integuments encircle the nucellus except at the tip where a small opening called the micropyle is organised.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341920
An ovule, which becomes curved so that the nucellus and embryo sac lie at right angles to the funicle is
1 Hemitropous
2 Campylotropous
3 Anatropous
4 Orthotropous
Explanation:
In campylotropous the body of the ovule is curved but the embryo sac is straight.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341921
Antipodal cells are present in which end of the embryo sac?
1 Chalazal end
2 Micropylar end
3 They are situated in the centre
4 None of the above
Explanation:
Antipodal cells are present at the chalazal end. Antipodals are nutritive in function. It nourishes the embryo sac.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341922
In a flower, if the megaspore mother cell forms megaspores without undergoing meiosis and if one of the megaspores develops into an embryo sac, its nuclei would be:
1 Haploid
2 Diploid
3 A few haploid and a few diploid
4 With varying ploidy.
Explanation:
Since no meiosis takes place so no change in ploidy will take place.
