341528
The phenomenon observed in some plants wherein parts of the sexual apparatus is used for forming embryos without fertilisation is called:
1 Parthenocarpy
2 Apomixis
3 Vegetative propagation
4 Sexual reproduction.
Explanation:
When seeds are produced without fertilization, this phenomenon is called apomixes. In parthenocarpy, seeds are not produced which means embryos are not produced. Hence, option ‘2’ is the correct answer.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341530
Polyembryony is
1 Occurrence of one embryo
2 Occurrence of no embryo
3 Occurrence of more than one embryo
4 None of these
Explanation:
Polyembryony is presence of more than one embryo inside the seed.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341531
Similarity between apomixes and vegetative reproduction is
1 Both occur round the year
2 Both are applicable only to dicot plants
3 Both bypass the flowering phase
4 Both produce progeny identical to the parent
Explanation:
Apomixis (asexual seed formation) is the result of a plant gaining the ability to bypass the most fundamental aspects of sexual reproduction: meiosis and fertilization. Embryos develop simply by division of a diploid cell. So the progenies produced are identical to the parent. In vegetative reproduction also progenies produced are identical to the parent.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341532
Adventive polyembryony is common in
1 Wheat
2 Apple
3 Mango
4 Orobanche
Explanation:
Adventive polyembryony is formation of multiple embryos from nucellus or integument. e.g., Mango, Citrus, Opuntia.
341528
The phenomenon observed in some plants wherein parts of the sexual apparatus is used for forming embryos without fertilisation is called:
1 Parthenocarpy
2 Apomixis
3 Vegetative propagation
4 Sexual reproduction.
Explanation:
When seeds are produced without fertilization, this phenomenon is called apomixes. In parthenocarpy, seeds are not produced which means embryos are not produced. Hence, option ‘2’ is the correct answer.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341530
Polyembryony is
1 Occurrence of one embryo
2 Occurrence of no embryo
3 Occurrence of more than one embryo
4 None of these
Explanation:
Polyembryony is presence of more than one embryo inside the seed.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341531
Similarity between apomixes and vegetative reproduction is
1 Both occur round the year
2 Both are applicable only to dicot plants
3 Both bypass the flowering phase
4 Both produce progeny identical to the parent
Explanation:
Apomixis (asexual seed formation) is the result of a plant gaining the ability to bypass the most fundamental aspects of sexual reproduction: meiosis and fertilization. Embryos develop simply by division of a diploid cell. So the progenies produced are identical to the parent. In vegetative reproduction also progenies produced are identical to the parent.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341532
Adventive polyembryony is common in
1 Wheat
2 Apple
3 Mango
4 Orobanche
Explanation:
Adventive polyembryony is formation of multiple embryos from nucellus or integument. e.g., Mango, Citrus, Opuntia.
341528
The phenomenon observed in some plants wherein parts of the sexual apparatus is used for forming embryos without fertilisation is called:
1 Parthenocarpy
2 Apomixis
3 Vegetative propagation
4 Sexual reproduction.
Explanation:
When seeds are produced without fertilization, this phenomenon is called apomixes. In parthenocarpy, seeds are not produced which means embryos are not produced. Hence, option ‘2’ is the correct answer.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341530
Polyembryony is
1 Occurrence of one embryo
2 Occurrence of no embryo
3 Occurrence of more than one embryo
4 None of these
Explanation:
Polyembryony is presence of more than one embryo inside the seed.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341531
Similarity between apomixes and vegetative reproduction is
1 Both occur round the year
2 Both are applicable only to dicot plants
3 Both bypass the flowering phase
4 Both produce progeny identical to the parent
Explanation:
Apomixis (asexual seed formation) is the result of a plant gaining the ability to bypass the most fundamental aspects of sexual reproduction: meiosis and fertilization. Embryos develop simply by division of a diploid cell. So the progenies produced are identical to the parent. In vegetative reproduction also progenies produced are identical to the parent.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341532
Adventive polyembryony is common in
1 Wheat
2 Apple
3 Mango
4 Orobanche
Explanation:
Adventive polyembryony is formation of multiple embryos from nucellus or integument. e.g., Mango, Citrus, Opuntia.
341528
The phenomenon observed in some plants wherein parts of the sexual apparatus is used for forming embryos without fertilisation is called:
1 Parthenocarpy
2 Apomixis
3 Vegetative propagation
4 Sexual reproduction.
Explanation:
When seeds are produced without fertilization, this phenomenon is called apomixes. In parthenocarpy, seeds are not produced which means embryos are not produced. Hence, option ‘2’ is the correct answer.
NCERT Exemplar
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341530
Polyembryony is
1 Occurrence of one embryo
2 Occurrence of no embryo
3 Occurrence of more than one embryo
4 None of these
Explanation:
Polyembryony is presence of more than one embryo inside the seed.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341531
Similarity between apomixes and vegetative reproduction is
1 Both occur round the year
2 Both are applicable only to dicot plants
3 Both bypass the flowering phase
4 Both produce progeny identical to the parent
Explanation:
Apomixis (asexual seed formation) is the result of a plant gaining the ability to bypass the most fundamental aspects of sexual reproduction: meiosis and fertilization. Embryos develop simply by division of a diploid cell. So the progenies produced are identical to the parent. In vegetative reproduction also progenies produced are identical to the parent.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341532
Adventive polyembryony is common in
1 Wheat
2 Apple
3 Mango
4 Orobanche
Explanation:
Adventive polyembryony is formation of multiple embryos from nucellus or integument. e.g., Mango, Citrus, Opuntia.
