Development of Sporophyte from gametophyte tissue without fusion of gametes is: (a) Apospory (b) Apogamy (c) Apomixis (d) Parthenogenesis

Development of Sporophyte from gametophyte tissue without fusion of gametes is: (a) Apospory (b) Apogamy (c) Apomixis (d) Parthenogenesis
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Ans. ((b))
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Development of saprophyte from gametophyte, is called (a) Apomixis (b) Apospory (c) Apogamy (d) Dip1ospory

Description : Development of saprophyte from gametophyte, is called (a) Apomixis (b) Apospory (c) Apogamy (d) Dip1ospory

Last Answer : Ans. ((c))

.Prothallus (gametophyte) gives rise to fern plant (sporophyte) without fertilization. It is (a) apospory (b) apogamy (c) parthenocarpy (d) parthenogenesis.

Description : .Prothallus (gametophyte) gives rise to fern plant (sporophyte) without fertilization. It is (a) apospory (b) apogamy (c) parthenocarpy (d) parthenogenesis.

Last Answer : (b) apogamy

Formation of gametophyte directly from sporophyte without meiosis is (a) apospory (b) apogamy (c) parthenogenesis (d) amphimixis.

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Last Answer : (a) apospory

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))

A fern differ from a moss in prossessing: (a) Swimming/flagellated anitherozoids (b) Flask-shaped archegonia (c) Independent Sporophyte (d) Independent gametophyte

Description : A fern differ from a moss in prossessing: (a) Swimming/flagellated anitherozoids (b) Flask-shaped archegonia (c) Independent Sporophyte (d) Independent gametophyte

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In a moss, the sporophyte (a) manufactures food for itself, as well as for the gametophyte (b) is partially parasitic on the gametophyte(c) produces gametes that give rise to the gametophyte (d) arises from a spore produced from the gametophyte.

Description : In a moss, the sporophyte (a) manufactures food for itself, as well as for the gametophyte (b) is partially parasitic on the gametophyte (c) produces gametes that give rise to the gametophyte (d) arises from a spore produced from the gametophyte.

Last Answer : (b) is partially parasitic on the gametophyte

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Last Answer : Ans. ((b))

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Compare the gametophyte and sporophyte of Bryophytes with that of Pteridophytes.

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Are the leafy plants part of the sporophyte or the gametophyte generation?

Description : Are the leafy plants part of the sporophyte or the gametophyte generation?

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Why sexual and asexual ulva plant are called as sporophyte gametophyte?

Description : Why sexual and asexual ulva plant are called as sporophyte gametophyte?

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In a moss the gametophyte stage depends on the sporophyte stage for nutrients.?

Description : In a moss the gametophyte stage depends on the sporophyte stage for nutrients.?

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Mention the differences between gametophyte and sporophyte.

Description : Mention the differences between gametophyte and sporophyte.

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Read the following five statements (A – E) and answer as asked next to them. (A) In Equisetum, the female gametophyte is retained on the parent sporophyte. (B) In Ginkgo, male gametophyte is not independent. (C) The sporophyte in Riccia is more developed than that in Polytrichum. (D) Sexual reproduction in Volvox is isogamous. (E) The spores of slime moulds lack cell walls. How many of the above statements are correct? (a) Two (b) Three (c) Four (d) One

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What is common in all the three, Funaria, Dryopteris and Ginkgo? (a) Presence of archegonia (b) Well developed vascular tissues (c) Independent gametophyte (d) Independent sporophyte

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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.

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Last Answer : (b) female gametophyte lacks archegonia

The plant body of moss (Funaria) is (a) completely sporophyte (b) predominantly gametophyte with sporophyte (c) completely gametophyte (d) predominantly sporophyte with gametophyte.

Description : The plant body of moss (Funaria) is (a) completely sporophyte (b) predominantly gametophyte with sporophyte (c) completely gametophyte (d) predominantly sporophyte with gametophyte.

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Bryophytes comprise (a) dominant phase of gametophyte which produces spores (b) small sporophyte phase and generally parasitic on gametophyte (c) sporophyte is of longer duration (d) dominant phase of sporophyte which is parasitic.

Description : Bryophytes comprise (a) dominant phase of gametophyte which produces spores (b) small sporophyte phase and generally parasitic on gametophyte (c) sporophyte is of longer duration (d) dominant phase of sporophyte which is parasitic.

Last Answer : b) small sporophyte phase and generally parasitic on gametophyte

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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Female gametophyte of Gnetum follows the developmental pattern of ..... a) tetrasporic type b) bisporic type c) monosporic type d) none of the above.

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Last Answer : a) tetrasporic type

Male gametophyte in angiosperms consists of

Description : Male gametophyte in angiosperms consists of

Last Answer : Male gametophyte in angiosperms consists of – Pollen grains, pollen tube, tube nucleus and two male nuclei.

Which of the following is not a characteristic of coniferales........ a)pycnoxylic wood b)motile male gametes c)presence of resin canal d) fertilization siphonogamous

Description : Which of the following is not a characteristic of coniferales........ a)pycnoxylic wood b)motile male gametes c)presence of resin canal d) fertilization siphonogamous

Last Answer : b)motile male gametes

What cross is useful in determining the genetic purity of gametes? Show with an example.

Description : What cross is useful in determining the genetic purity of gametes? Show with an example.  

Last Answer : Ans: Test cross. If it is done between an individual with Tt genotype and the recessive parent with tt genotype, 50% of the individuals obtained will be tall and the remaining are dwarf. 

The tissue which is involved in development of lateral roots is

Description : The tissue which is involved in development of lateral roots is

Last Answer : The tissue which is involved in development of lateral roots is – Pericycle

In angiosperm, triple fusion is necessary for the formation of: (a) Embryo (b) Pollen (c) Endosperm (d) Leaf

Description : In angiosperm, triple fusion is necessary for the formation of: (a) Embryo (b) Pollen (c) Endosperm (d) Leaf

Last Answer : Ans. ((c))

Synandrous c9ndition is the fusion of (a) Filaments only (b) Both filaments and anthers (c) Anthers only (d) Petals

Description : Synandrous c9ndition is the fusion of (a) Filaments only (b) Both filaments and anthers (c) Anthers only (d) Petals

Last Answer : Ans. ((b))

Development of an egg without - fertilization is called (1) Gametogenesis (2) Parthenogenesis (3) Oogenesis (4) Metamorphosis

Description : Development of an egg without - fertilization is called (1) Gametogenesis (2) Parthenogenesis (3) Oogenesis (4) Metamorphosis

Last Answer : (2) Parthenogenesis Explanation: Parthenogenesis is a form of asexual reproduction in which growth and development of embryos occur without fertilization. In plants, parthenogenesis means development of an embryo from an unfertilized edd call.

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.

Parthenogenesis is (a) development of embryo without fertilisation (b) development of fruit without fertilisation (c) development of fruit without hormones (d) development of embryo from egg without fertilisation.

Description : Parthenogenesis is (a) development of embryo without fertilisation (b) development of fruit without fertilisation (c) development of fruit without hormones (d) development of embryo from egg without fertilisation.

Last Answer : (d) development of embryo from egg without fertilisation.

Development of an egg without fertilization is called (1) Gametogenesis (2) Parthenogenesis (3) Oogenesis (4) Metamorphosis

Description : Development of an egg without fertilization is called (1) Gametogenesis (2) Parthenogenesis (3) Oogenesis (4) Metamorphosis

Last Answer : Parthenogenesis

Syngamy means (a) fusion of gametes (b) fusion of cytoplasms (c) fusion of two similar spores (d) fusion of two dissimilar spores.

Description : Syngamy means (a) fusion of gametes (b) fusion of cytoplasms (c) fusion of two similar spores (d) fusion of two dissimilar spores.

Last Answer : a) fusion of gametes

Double fertilisation is (a) fusion of two male gametes of a pollen tube with two different eggs (b) fusion of one male gamete with two polar nuclei (c) fusion of two male gametes with one egg (d) syngamy and triple fusion.

Description : Double fertilisation is (a) fusion of two male gametes of a pollen tube with two different eggs (b) fusion of one male gamete with two polar nuclei (c) fusion of two male gametes with one egg (d) syngamy and triple fusion.

Last Answer : (d) syngamy and triple fusion.

Double fertilization is (1) Fusion of two male gametes of a pollen tube with two different eggs (2) Fusion of one male gamete with two polar nuclei (3) Fusion of two male gametes with one egg (4) Syngamy and triple fusion

Description : Double fertilization is (1) Fusion of two male gametes of a pollen tube with two different eggs (2) Fusion of one male gamete with two polar nuclei (3) Fusion of two male gametes with one egg (4) Syngamy and triple fusion

Last Answer : (4) Syngamy and triple fusion

Some plants develop fruit s without fertilization. This phenomenon is called (a) apocarpy (b) apogamy (c) parthenocarpy (d) syncarpy

Description : Some plants develop fruit s without fertilization. This phenomenon is called (a) apocarpy (b) apogamy (c) parthenocarpy (d) syncarpy

Last Answer : Ans:(c)

Development of embryo from unfertilized egg is known as A) Parthenogenesis B) Parthenocarpy C) Apomixsis D) None of the above

Description : Development of embryo from unfertilized egg is known as A) Parthenogenesis B) Parthenocarpy C) Apomixsis D) None of the above

Last Answer : A) Parthenogenesis

Study of formation, growth and development of new individual from an egg is (a) apomixis (b) embryology (c) embryogeny (d) cytology.

Description : Study of formation, growth and development of new individual from an egg is (a) apomixis (b) embryology (c) embryogeny (d) cytology.

Last Answer : (b) embryology

Which of the following refers to the development of viable individuals from unfertilized eggs? a) self-fertilization b) hermaphroditic reproduction (pronounced her - MAF - ro - dit - ik) c) parthenogenesis

Description : Which of the following refers to the development of viable individuals from unfertilized eggs? a) self-fertilization b) hermaphroditic reproduction (pronounced her - MAF - ro - dit - ik) c) parthenogenesis

Last Answer : ANSWER: C -- PARTHENOGENESIS

What is the structure of sclerenchyma tissue ?

Description : What is the structure of sclerenchyma tissue ?

Last Answer : The cells of this tissue are hard , very long and have thick walls. Tissue is protoplasm -free , lignin-containing, and is specifically for mechanical work. Although protoplasm is present in the ... very thick and ligninous. Mature scleroid cells are usually dead. The cell wall is well-contained.

Consider the following statement: The ex situ conservation of genetic resources can be done through: (1) Tissue culture practices (2) Maintenance of sanctuaries (3) The establishment of germplasm banks (4) The establishment of national parks

Description : Consider the following statement: The ex situ conservation of genetic resources can be done through: (1) Tissue culture practices (2) Maintenance of sanctuaries (3) The establishment of germplasm banks (4) The establishment of national parks

Last Answer : Ans. ((d))

With reference to plant tissue culture select the matching pair: (1) Sterile triploid—banana and seedless fruit (2) Somaclonal variations—differences appearing (3) Embryoids—non-zygatic embryo produced from somatic cells (4) Pulses—belong to cruciferae

Description : With reference to plant tissue culture select the matching pair: (1) Sterile triploid—banana and seedless fruit (2) Somaclonal variations—differences appearing (3) Embryoids—non-zygatic embryo produced from somatic cells (4) Pulses—belong to cruciferae

Last Answer : Ans. ((a))