The seeds of Pinus plant show a. Polyembryony b. One embryo c. No embryo d. Redundant embryo

The seeds of Pinus plant show
a. Polyembryony
b. One embryo
c. No embryo
d. Redundant embryo
by

1 Answer

Answer :

a. Polyembryony
by

Related questions

Polyembryony means a. One embryo b. Two embryo c. More than two embryo d. More than three embryo

Description : Polyembryony means a. One embryo b. Two embryo c. More than two embryo d. More than three embryo

Last Answer : More than three embryo

Occurrence of more than one embryo in a seed is known as: a) Polyembryony b) parthenocarpy c) Apomixis d) Embryogeny

Description : Occurrence of more than one embryo in a seed is known as: a) Polyembryony b) parthenocarpy c) Apomixis d) Embryogeny

Last Answer : Ans: a) Polyembryony

Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms. (a) Perianth and two integuments (b) Embryo development and apical meristem (c) Absence of resin duct and leaf venation (d) Presence of vessel elements and absence of archegonia

Description : Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms. (a) Perianth and two integuments (b) Embryo development and ... of resin duct and leaf venation (d) Presence of vessel elements and absence of archegonia

Last Answer : (d) Presence of vessel elements and absence of archegonia

n Pinus/gymnosperms, the haploid structure are (a) megaspore, endosperm and embryo (b) megaspore, pollen grain and endosperm (c) megaspore, integument and root (d) pollen grain, leaf and root.

Description : n Pinus/gymnosperms, the haploid structure are (a) megaspore, endosperm and embryo (b) megaspore, pollen grain and endosperm (c) megaspore, integument and root (d) pollen grain, leaf and root.

Last Answer : (b) megaspore, pollen grain and endosperm

The seeds of Pinus plant are a. Unitegmic b. Bitegmic c. Ategmic d. Abortive

Description : The seeds of Pinus plant are a. Unitegmic b. Bitegmic c. Ategmic d. Abortive

Last Answer : a. Unitegmic

The species of Pinus, seeds of which are edible is/ chilgoza comes from: (a) P. roxburghii (b) P. gerardiand (c) P. monophylla (d) P. sylvestris

Description : The species of Pinus, seeds of which are edible is/ chilgoza comes from: (a) P. roxburghii (b) P. gerardiand (c) P. monophylla (d) P. sylvestris

Last Answer : Ans. ((b))

Which of the following plants produces seeds but not flowers? (a) Maize (b) Mint (c) Peepal (d) Pinus

Description : Which of the following plants produces seeds but not flowers? (a) Maize (b) Mint (c) Peepal (d) Pinus

Last Answer : (d) Pinus

The plant group that produces spores and embryo but lacks vascular tissues and seeds is (a) Pteridophyta (b) Rhodophyta (c) Bryophyta (d) Phaeophyta.

Description : The plant group that produces spores and embryo but lacks vascular tissues and seeds is (a) Pteridophyta (b) Rhodophyta (c) Bryophyta (d) Phaeophyta.

Last Answer : (c) Bryophyta

Young embryo is removed from developing seeds and planted on a suitable nutrient medium in vitro is called as

Description : Young embryo is removed from developing seeds and planted on a suitable nutrient medium in vitro is called as

Last Answer : Ans. Embryo culture

Scarification of seeds is done for removing (a) Dormancy (b) Germination inhibitors (c) Growth (d) Embryo

Description : Scarification of seeds is done for removing (a) Dormancy (b) Germination inhibitors (c) Growth (d) Embryo

Last Answer : Ans:(a)

The nutritive tissue in the seeds of higher plants is known as - (1) hypocotyl (2) embryo (3) endosperm (4) nucellus

Description : The nutritive tissue in the seeds of higher plants is known as - (1) hypocotyl (2) embryo (3) endosperm (4) nucellus

Last Answer : (3) endosperm Explanation: The seed includes three primary regions: the embryo, nutritive tissue, and seed coat. Endosperm is a nutritive tissue that sustains the embryo and seedling. The endosperm may ... the embryo as in many legumes, which use the cotyledons as a food source during germination.

Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because (a) female gametophyte is free and gets dispersed like seeds (b) female gametophyte lacks archegonia (c) megaspores possess endosperm and embryo surrounded by seed coat (d) embryo develops in female gametophyte which is retained on parent sporophyte.

Description : Selaginella and Salvinia are considered to represent a significant step toward evolution of seed habit because (a) female gametophyte is free and gets dispersed like seeds (b) female gametophyte ... by seed coat (d) embryo develops in female gametophyte which is retained on parent sporophyte.

Last Answer : (b) female gametophyte lacks archegonia

The process where, plants are propagated by seeds, but the embryo is formed by the process in which normal meiosis and syngamy has been eliminated is called

Description : The process where, plants are propagated by seeds, but the embryo is formed by the process in which normal meiosis and syngamy has been eliminated is called

Last Answer : The process where, plants are propagated by seeds, but the embryo is formed by the process in which normal meiosis and syngamy has been eliminated is called – Agamospermy

The nutritive tissue in the seeds of higher plants is known as (1) hypocotyl (2) embryo (3) endosperm (4) nucellus

Description : The nutritive tissue in the seeds of higher plants is known as (1) hypocotyl (2) embryo (3) endosperm (4) nucellus

Last Answer : endosperm

Formation of diploid embryosac from diploid vegetative structure, e.g., nucellus or integument etc., without meiosis is called: (a) Apospory (b) Apomixis (c) Diplospory (d) Adventives polyembryony

Description : Formation of diploid embryosac from diploid vegetative structure, e.g., nucellus or integument etc., without meiosis is called: (a) Apospory (b) Apomixis (c) Diplospory (d) Adventives polyembryony

Last Answer : Ans. ((a))

What is polyembryony ?

Description : What is polyembryony ?

Last Answer : Polyembryony is the phenomenon in which a single embryo in its initial embryonic stage divides itself forming many new individuals of the same sex and genetically identical. This is the way, for ... place in armadillos of the genus Dasypus. Polyembryony is an example of natural cloning .

The best example of Polyembryony is (1) Cocoa (2) Capsicum (3) Citrus (4) Cycas

Description : The best example of Polyembryony is (1) Cocoa (2) Capsicum (3) Citrus (4) Cycas

Last Answer : (3) Citrus Explanation: In citrus fruits such as oranges, the nuclear cells that surround the embryo start dividing and protrude into the embryo sac. These develop into embryos; thus resulting in the presence of more than one embryo inside each ovule. This condition is known as polyembryony.

Nuceller seedlings are also called as: a. Monoembryony b. Zygotic seedling c. Polyembryony d. None of them

Description : Nuceller seedlings are also called as: a. Monoembryony b. Zygotic seedling c. Polyembryony d. None of them

Last Answer : Polyembryony

The development of fruit without fertilization or seed is called as: a. Pollination b. polyembryony c. pseudogamy d. Parthenocarpy

Description : The development of fruit without fertilization or seed is called as: a. Pollination b. polyembryony c. pseudogamy d. Parthenocarpy

Last Answer : Parthenocarpy

Development of an organism from female gamete/ egg without involving fertilization is (a) adventitive embryony (b) polyembryony (c) parthenocarpy (d) parthenogenesis.

Description : Development of an organism from female gamete/ egg without involving fertilization is (a) adventitive embryony (b) polyembryony (c) parthenocarpy (d) parthenogenesis.

Last Answer : (d) parthenogenesis.

The polyembryony commonly occurs in (a) tomato (b) potato (c) Citrus (d) turmeric.

Description : The polyembryony commonly occurs in (a) tomato (b) potato (c) Citrus (d) turmeric.

Last Answer : (c) Citrus

Nucellar polyembryony is reported in species of (a) Citrus (b) Gossypium (c) Triticum (d) Brassica.

Description : Nucellar polyembryony is reported in species of (a) Citrus (b) Gossypium (c) Triticum (d) Brassica.

Last Answer : (a) Citrus

Which one of the following generates new genetic combinations leading to variation? (a) Vegetative reproduction (b) Parthenogenesis (c) Sexual reproduction (d) Nucellar polyembryony

Description : Which one of the following generates new genetic combinations leading to variation? (a) Vegetative reproduction (b) Parthenogenesis (c) Sexual reproduction (d) Nucellar polyembryony

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The transfer of pollen grains from anther to stigma is called; a) Fertilization b) pollination c) Microsporogenesis d) Polyembryony

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In spite of several angiospermic features Gnetum is a gymnosperm because…. a) polyembryony is a common features b) prothallial cell is present in the male gametophyte c) seed is naked d) stem exhibit anomalous secondary growth

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Last Answer : c) seed is naked

Nucellar polyembryony is reported in species of:a) Citrusb) Gossypiumc) Triticumd) Brassica

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Last Answer : a) Citrus

The chemicals which induce artificial polyembryony are

Description : The chemicals which induce artificial polyembryony are

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When polyembryony is due to activation of some sporophytic cells of ovule, it is called as

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Last Answer : Citrus

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