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

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
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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
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Related questions

What is syngamy? Who discovered it?

Description : What is syngamy? Who discovered it? 

Last Answer : Ans: Syngamy is fusion of male and female gametes. It was discovered by Strasburger.  

In some plants, the female gamete develops into embryo without fertilisation. This phenomenon is known as (a) parthenogenesis (b) autogamy (c) parthenocarpy (d) syngamy.

Description : In some plants, the female gamete develops into embryo without fertilisation. This phenomenon is known as (a) parthenogenesis (b) autogamy (c) parthenocarpy (d) syngamy.

Last Answer : (a) parthenogenesis

Which is not applicable to vegetatively propagated plants a) To get true to type plants b) To protect an elite quality c) To conserve a plant d) To get a new type of plant

Description : Which is not applicable to vegetatively propagated plants a) To get true to type plants b) To protect an elite quality c) To conserve a plant d) To get a new type of plant

Last Answer : d) To get a new type of plant

When a diploid embryosac is formed from a megaspore mother cell without meiosis, it is called as

Description : When a diploid embryosac is formed from a megaspore mother cell without meiosis, it is called as

Last Answer : When a diploid embryosac is formed from a megaspore mother cell without meiosis, it is called as – Diplospory

Banana is propagated by a) Stem cutting b) Tillers c) Suckers d) Crown

Description : Banana is propagated by a) Stem cutting b) Tillers c) Suckers d) Crown

Last Answer : c) Suckers

To obtain haploid plants, we culture _________ e. Entire anther f. Nucleus g. Embryo h. Apical bud

Description : To obtain haploid plants, we culture _________ e. Entire anther f. Nucleus g. Embryo h. Apical bud

Last Answer : e. Entire anther

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))

Assertion: Many plants are propagated vegetatively even though they bear seeds. Reason: Potatoes multiply by tubers, apple by cutting etc.

Description : Assertion: Many plants are propagated vegetatively even though they bear seeds. Reason: Potatoes multiply by tubers, apple by cutting etc.

Last Answer : Assertion: Many plants are propagated vegetatively even though they bear seeds. Reason: Potatoes ... both the assertion and reason are false.

Sugarcane plants are usually propagated by vegetative means because - (1) they do not produce seeds (2) it is possible to maintain genetic quality (3) the incidence of disease may be reduced

Description : Sugarcane plants are usually propagated by vegetative means because - (1) they do not produce seeds (2) it is possible to maintain genetic quality (3) the incidence of disease may be reduced

Last Answer : (1) they do not produce seeds Explanation: Vegetative reproduction is a form of asexual reproduction in plants. It is a process by which new individuals arise without production ... propagation include cutting, vegetative apomixis, layering, division, budding, grafting and tissue culture.

Sugarcane plants are usually propagated by vegetative means because (1) they do not produce seeds (2) it is possible to maintain genetic quality (3) the incidence of disease may be reduced

Description : Sugarcane plants are usually propagated by vegetative means because (1) they do not produce seeds (2) it is possible to maintain genetic quality (3) the incidence of disease may be reduced 

Last Answer : they do not produce seeds

The formation of multivalents at meiosis in diploid organism is due to: (a) Monosomy (b) Delection (c) Inversion (d) Reciprocal translocation

Description : The formation of multivalents at meiosis in diploid organism is due to: (a) Monosomy (b) Delection (c) Inversion (d) Reciprocal translocation

Last Answer : Ans. ((d))

In angiosperms regarding development of microgametophyte each microspore mother cell undergoes (a) Mitosis to produce 4 microspores (b) Two successive mitosis to form 4 microspores (c) Two successive meiotic division to form 4 microspores (d) Meiosis to produce 4 haploid microspores

Description : In angiosperms regarding development of microgametophyte each microspore mother cell undergoes (a) Mitosis to produce 4 microspores (b) Two successive mitosis to form 4 microspores (c) Two successive meiotic division to form 4 microspores (d) Meiosis to produce 4 haploid microspores

Last Answer : Ans. ((d))

What is the upper part of the embryo called ?

Description : What is the upper part of the embryo called ?

Last Answer : : It is called epicotyl.

What is the lower part of the embryo called ?

Description : What is the lower part of the embryo called ?

Last Answer : The lower part of the embryonic stem is called epicotyle.

When the embryo develops from haploid egg cell without fertilization, the phenomenon is called as

Description : When the embryo develops from haploid egg cell without fertilization, the phenomenon is called as

Last Answer : When the embryo develops from haploid egg cell without fertilization, the phenomenon is called as – Haploid parthenogenesis

When embryo arises directly from the (2n) sporophytic cells like nucellus or integuments it is called as

Description : When embryo arises directly from the (2n) sporophytic cells like nucellus or integuments it is called as

Last Answer : When embryo arises directly from the (2n) sporophytic cells like nucellus or integuments it is called as – Adventive embryony

When multiple embryo develop from different embryosac it is called as

Description : When multiple embryo develop from different embryosac it is called as

Last Answer : When multiple embryo develop from different embryosac it is called as – False polyembryony

EDS virus is propagated in C A. chicken embryo B. Partridge embryo C. Duck embryo D. None of the these

Description : EDS virus is propagated in C A. chicken embryo B. Partridge embryo C. Duck embryo D. None of the these

Last Answer : Duck embryo

Newcastle disease virus can be propagated B A. on Nutrient agar B. Chicken embryo C. In broth D. None of these

Description : Newcastle disease virus can be propagated B A. on Nutrient agar B. Chicken embryo C. In broth D. None of these

Last Answer : Chicken embryo

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))

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))

The ovule in which embryo sac become horse shoe shaped in: (a) Amphitropous (b) Camphylotropous (c) Orthotropous (d) Anatropous Ans. (a) ......................................................---------------------------......................................................................... BOTANY PRACTICE TEST SAMPLE QUESTIONS 1. Caruncle develops-from: (a) Outer integument (b) Ctyledon (c) Funiculus (d) Inner integuments

Description : The ovule in which embryo sac become horse shoe shaped in: (a) Amphitropous (b) Camphylotropous (c) Orthotropous (d) Anatropous Ans. (a) .................................. ... TEST SAMPLE QUESTIONS 1. Caruncle develops-from: (a) Outer integument (b) Ctyledon (c) Funiculus (d) Inner integuments

Last Answer : Ans. ((a))

Embryo sac represents: (a) Megaspore (b) Megagamete (c) Megasporophyll (d) megagametophyte

Description : Embryo sac represents: (a) Megaspore (b) Megagamete (c) Megasporophyll (d) megagametophyte

Last Answer : Ans. ((d))

Haploid cells belong to: (a) Integument, pollen grain, endosperm (b) Embryo, endosperm and pollen grain (c) Megaspore, pollen grain, antipodal (d) Integument, pollen grain and antipodal

Description : Haploid cells belong to: (a) Integument, pollen grain, endosperm (b) Embryo, endosperm and pollen grain (c) Megaspore, pollen grain, antipodal (d) Integument, pollen grain and antipodal

Last Answer : Ans. ((c))

The scutellum of the gram embryo is a: (a) Vestigial organ (b) Photosynthetic organ (c) Absorptive organ (d) Protective organ

Description : The scutellum of the gram embryo is a: (a) Vestigial organ (b) Photosynthetic organ (c) Absorptive organ (d) Protective organ

Last Answer : Ans. ((a))

Callus is a. Tissue that forms embryo b. An insoluble carbohydrate c. Tissue that grows to form embryoid d. Unorganized actively dividing mass of cells maintained in cultured

Description : Callus is a. Tissue that forms embryo b. An insoluble carbohydrate c. Tissue that grows to form embryoid d. Unorganized actively dividing mass of cells maintained in cultured

Last Answer : d. Unorganized actively dividing mass of cells maintained in cultured

Excretory products of mammalian embryo are eliminated out by - (1) Placenta (2) Amniotic fluid (3) Allantois (4) Ureter

Description : Excretory products of mammalian embryo are eliminated out by - (1) Placenta (2) Amniotic fluid (3) Allantois (4) Ureter

Last Answer : (1) Placenta Explanation: The placenta is an organ that connects the developing fetus to the uterine wall to allow nutrient uptake, waste elimination, and gas exchange via the mother's blood ... are also found in some snakes and lizards with yawing levels of development up to mammalian levels.

Excretory products of mammalian embryo are eliminated out by (1) Placenta (2) Amniotic fluid (3) Allantois (4) Ureter

Description : Excretory products of mammalian embryo are eliminated out by (1) Placenta (2) Amniotic fluid (3) Allantois (4) Ureter

Last Answer : Placenta

Papaya is still being commercially propagated from a. Cutting b. Suckers c. Seeds d. Grafting

Description : Papaya is still being commercially propagated from a. Cutting b. Suckers c. Seeds d. Grafting

Last Answer : Seeds

Which hormone is found in fruits, flowers, seeds, leaves and roots ?

Description : Which hormone is found in fruits, flowers, seeds, leaves and roots ?

Last Answer : Ethylene hormone is found in fruits, flowers, seeds, leaves and roots.

The seeds which have separate endosperm: (1) Maize (2) Onion (3) Rice (4) Bean

Description : The seeds which have separate endosperm: (1) Maize (2) Onion (3) Rice (4) Bean

Last Answer : Ans. ((a))

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 one yields oil from seeds and orange dye from petals? (a) Helioanthus annus (b) Calendulla officinalis (c) Carthamus tinctorius (d) Tagetus erecta

Description : Which one yields oil from seeds and orange dye from petals? (a) Helioanthus annus (b) Calendulla officinalis (c) Carthamus tinctorius (d) Tagetus erecta

Last Answer : Ans. ((c))

what are seeds?

Description : what are seeds?

Last Answer : Seeds are baby plants, or the fertilized ovules of a plant. Seeds come in a range of size and shapes. The smallest seed belongs to orchids, which can been dust-sized and weigh as little as ... pattern that warns animals; these seeds do not need an animal disperser, and use other dispersal methods.

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.

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

Why is the process of perspiration very important for plants ?

Description : Why is the process of perspiration very important for plants ?

Last Answer : As a result of perspiration, the plant gets rid of excess water pressure by expelling water from its body. Perspiration increases the concentration of juice in the cells. Increasing the ... maintains the moisture of the leaves. For this reason perspiration is very necessary for plants.

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

Difference between syngamy and triple fusion -Biology

Description : Difference between syngamy and triple fusion -Biology

Last Answer : answer:

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.

Syngamy can occur outside the body of the organism in (a) mosses (b) algae (c) ferns (d) fungi.

Description : Syngamy can occur outside the body of the organism in (a) mosses (b) algae (c) ferns (d) fungi.

Last Answer : (b) algae

Bacteria lack alternation of generation because there is (a) neither syngamy nor reduction division (b) distinct chromosomes are absent (c) no conjugation (d) no exchange of genetic materia

Description : Bacteria lack alternation of generation because there is (a) neither syngamy nor reduction division (b) distinct chromosomes are absent (c) no conjugation (d) no exchange of genetic materia

Last Answer : (a) neither syngamy nor reduction division

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

Consider the following statement: (1) In plant cells, cytokinesis start with the formation of the phragmoplast (2) Phragmoplast comprises intrazonal microtubules and Golgi vesicles (3) Primary cell wall is produced by microtubules (4) Phragmoplast is formed by nucleus

Description : Consider the following statement: (1) In plant cells, cytokinesis start with the formation of the phragmoplast (2) Phragmoplast comprises intrazonal microtubules and Golgi vesicles (3) Primary cell wall is produced by microtubules (4) Phragmoplast is formed by nucleus

Last Answer : Ans. ((a))

When many islands of phloem embedded in xylem layer due to anomalous activity of cambium are formed such phloems are known as

Description : When many islands of phloem embedded in xylem layer due to anomalous activity of cambium are formed such phloems are known as

Last Answer : When many islands of phloem embedded in xylem layer due to anomalous activity of cambium are formed such phloems are known as – Included phloem

When the diploid embryosac is formed from the cells of nucellus, it is known as

Description : When the diploid embryosac is formed from the cells of nucellus, it is known as

Last Answer : When the diploid embryosac is formed from the cells of nucellus, it is known as – Apospory

Where do you find protoxylem lacuna? How are they formed?

Description : Where do you find protoxylem lacuna? How are they formed?

Last Answer : Ans: They are found in the vascular bundles of monocot stem. They are formed due to crushing of protoxylem vessels during the course of development. 

Coacervates were formed by a) DNA b) Radiations c) Polymerization d) Polymerisation and aggregation

Description : Coacervates were formed by a) DNA b) Radiations c) Polymerization d) Polymerisation and aggregation

Last Answer : d) Polymerisation and aggregation