Which of the following statements is not true about somatic embryogenesis? (a) The pattern of development of a somatic embryo is comparable to that of a zygotic embryo. (b) Somatic embryos can develop from microspores. (c) Somatic embryo is induced usually by an auxin such as 2, 4-D. (d) A somatic embryo develops from a somatic cell.

Which of the following statements is not true
about somatic embryogenesis?
(a) The pattern of development of a somatic embryo
is comparable to that of a zygotic embryo.
(b) Somatic embryos can develop from microspores.
(c) Somatic embryo is induced usually by an auxin
such as 2, 4-D.
(d) A somatic embryo develops from a somatic cell.
by

1 Answer

Answer :

(b) Somatic embryos can develop from microspores.
by

Related questions

Assertion : In plant tissue culture somatic embryos can be induced from any plant cell. Reason : Any viable plant cell can differentiate into somatic

Description : Assertion : In plant tissue culture somatic embryos can be induced from any plant cell. Reason : Any viable plant cell can differentiate into somatic

Last Answer : Assertion : In plant tissue culture somatic embryos can be induced from any plant cell. Reason : ... false D. If both assertion and reason are false

Assertion : In plant tissue culture somatic embryos can be induced from any plant cell. Reason : Any viable plant cell can differentiate into somatic

Description : Assertion : In plant tissue culture somatic embryos can be induced from any plant cell. Reason : Any viable plant cell can differentiate into somatic

Last Answer : Assertion : In plant tissue culture somatic embryos can be induced from any plant cell. Reason : ... false D. If both assertion and reason are false

Which one of the following statements regarding post-fertilisation development in flowering plants is incorrect? (a) Ovules develop into embryo sac. (b) Ovary develops into fruit. (c) Zygote develops into embryo. (d) Central cell develops into endosperm

Description : Which one of the following statements regarding post-fertilisation development in flowering plants is incorrect? (a) Ovules develop into embryo sac. (b) Ovary develops into fruit. (c) Zygote develops into embryo. (d) Central cell develops into endosperm

Last Answer : (a) Ovules develop into embryo sac.

.In a type of apomixis known as adventive embryony, embryos develop directly from the (a) nucellus or integuments (b) zygote (c) synergids or antipodals in an embryo sac (d) accessory embryo sacs in the ovule

Description : .In a type of apomixis known as adventive embryony, embryos develop directly from the (a) nucellus or integuments (b) zygote (c) synergids or antipodals in an embryo sac (d) accessory embryo sacs in the ovule

Last Answer : (a) nucellus or integuments

Some snake embryos have small buds resembling limbs. These buds disappear at later stages of embryo development. These findings suggest that these snakes?

Description : Some snake embryos have small buds resembling limbs. These buds disappear at later stages of embryo development. These findings suggest that these snakes?

Last Answer : hi oops daddy chulo

What are the processes involved in the encapsulation of the somatic embryos? -Biology

Description : What are the processes involved in the encapsulation of the somatic embryos? -Biology

Last Answer : answer:

What are the processes involved in the encapsulation of the somatic embryos? -Biology

Description : What are the processes involved in the encapsulation of the somatic embryos? -Biology

Last Answer : answer:

A process of formation of somatic embryos from callus

Description : A process of formation of somatic embryos from callus

Last Answer : Ans. Embryogenesis

Describe the post-zygotic events leading to implantation and placenta formation in humans. Mention any two functions of placenta. [All India 2010] or Explain the process of fertilisation in human female and trace the post-fertilisation events in a sequential order up to implantation of the embryo. [Foreign 2010] -Biology

Description : Describe the post-zygotic events leading to implantation and placenta formation in humans. Mention any two functions of placenta. [All India 2010] or Explain the process of fertilisation in human female ... events in a sequential order up to implantation of the embryo. [Foreign 2010] -Biology

Last Answer : Post-zygotic events leading to implantation and placenta formation. After implantation of blastocyst, the finger-like projections called chorionic villi, appear on the trophoblast and is surrounded by ... acts as an endocrine gland and secretes hormones like hPL, hCG, oestrogen and progesterone.

Adventive embryony in Citrus is due to (a) nucellus (b) integuments (c) zygotic embryo (d) fertilized egg.

Description : Adventive embryony in Citrus is due to (a) nucellus (b) integuments (c) zygotic embryo (d) fertilized egg.

Last Answer : nucellus

Vegetative embryos develops without fertilization

Description : Vegetative embryos develops without fertilization

Last Answer : Ans. Apomixis

Transgenic plants are the ones (a) generated by introducing foreign DNA into a cell and regenerating a plant from that cell (b) produced after protoplast fusion in artificial medium(c) grown in artificial medium after hybridization in the field (d) produced by a somatic embryo in artificial medium.

Description : Transgenic plants are the ones (a) generated by introducing foreign DNA into a cell and regenerating a plant from that cell (b) produced after protoplast fusion in artificial medium (c) grown in ... medium after hybridization in the field (d) produced by a somatic embryo in artificial medium.

Last Answer : (a) generated by introducing foreign DNA into a

Assertion : Somatic embros can be induced from any cell in plant tissue culture. Reason : Any living plant cell is capable of differentiating into som

Description : Assertion : Somatic embros can be induced from any cell in plant tissue culture. Reason : Any living plant cell is capable of differentiating into som

Last Answer : Assertion : Somatic embros can be induced from any cell in plant tissue culture. Reason : Any ... false D. If both assertion and reason are false

Which of the following statement is correct? (1) The causal organism for foolish seedling disease is the source of gibberellin (2) Abscisic acid is a growth promoter (3) The ratio of auxin : cytokinin control cell differentiation (4) Bolting of cabbage can be induced by treatment with IAA

Description : Which of the following statement is correct? (1) The causal organism for foolish seedling disease is the source of gibberellin (2) Abscisic acid is a growth promoter (3) The ratio of auxin : cytokinin control cell differentiation (4) Bolting of cabbage can be induced by treatment with IAA

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))

Which of the following correctly explains the phenomenon of "Test Tube Bally"? (1) When every process of embryo formation is in the test tube. (2) When the embryo develops in a test tube. (3) When the fertilisation is external and development is internal. (4) When the fertilisation is internal and development is external.

Description : Which of the following correctly explains the phenomenon of "Test Tube Bally"? (1) When every process of embryo formation is in the test tube. (2) When the embryo develops in a test tube ... is external and development is internal. (4) When the fertilisation is internal and development is external.

Last Answer : (3) When the fertilisation is external and development is internal. Explanation: Test tube baby is born from in vitro fertilization. In vitro fertilization (IVF) is a process by which an egg ... ) is then transferred to the patient's uterus with the intention of establishing a successful pregnancy.

Which of the following correctly explains the phenomenon of “Test Tube Baby” ? (1) When every process of embryo formation is in the test tube. (2) When the embryo develops in a test tube. (3) When the fertilisation is external and development is internal. (4) When the fertilisation is internal and development is external.

Description : Which of the following correctly explains the phenomenon of Test Tube Baby ? (1) When every process of embryo formation is in the test tube. (2) When the embryo develops in a test ... is external and development is internal. (4) When the fertilisation is internal and development is external.

Last Answer : When the fertilisation is external and development is internal.

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))

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

Which one of the following statements is correct? (a) Endothecium produces the microspores. (b) Tapetum nourishes the developing pollen. (c) Hard outer layer of pollen is called intine. (d) Sporogenous tissue is haploid

Description : Which one of the following statements is correct? (a) Endothecium produces the microspores. (b) Tapetum nourishes the developing pollen. (c) Hard outer layer of pollen is called intine. (d) Sporogenous tissue is haploid

Last Answer : (b) Tapetum nourishes the developing pollen.

Which one of the following statements is correct?a)Endothecium produces the microspores b)Tapetum nourishes the developing pollenc)Hard outer layer of pollen is called intined)Sporogenous tissue is haploid

Description : Which one of the following statements is correct?a)Endothecium produces the microspores b)Tapetum nourishes the developing pollenc)Hard outer layer of pollen is called intined)Sporogenous tissue is haploid

Last Answer : Tapetum nourishes the developing pollen

Callus is induced to form roots in the medium of (a) Auxin (b) Cytokinins only (c) Morecytokinins than auxin (d) Moreauxin than cytokinins

Description : Callus is induced to form roots in the medium of (a) Auxin (b) Cytokinins only (c) Morecytokinins than auxin (d) Moreauxin than cytokinins

Last Answer : (d) Moreauxin than cytokinins

During embryogenesis archenteron is preceded by

Description : During embryogenesis archenteron is preceded by

Last Answer : During embryogenesis archenteron is preceded by A. Blastulation B. Neuralation C. Gastrulation D. Implanatation

In cloning of cattle a fertilized egg is taken out of the mother’s womb and (a) in the eight cell stage, cells are separated and cultured until small embryos are formed which are implanted into the womb of other cows (b) in the eight cell stage the individual cells are separated under electrical field for further development in culture media (c) from this upto eight identical twins can be produced (d) the egg is divided into 4 pairs of cells which are implanted into the womb of other cows.

Description : In cloning of cattle a fertilized egg is taken out of the mother's womb and (a) in the eight cell stage, cells are separated and cultured until small embryos are formed which are implanted into the ... d) the egg is divided into 4 pairs of cells which are implanted into the womb of other cows.

Last Answer : (a) in the eight cell stage, cells are separated and cultured until small embryos are formed which are implanted into the womb of other cows

Which of the following best illustrates “feedback” in development? (a) Tissue X secretes RNA which changes the development of tissue Y. (b) As tissue X develops, it secretes enzymes that inhibit the development of tissue Y. (c) As tissue X develops, it secretes something that induces tissue Y to develop. (d) As tissue X develops, it secretes something that slows down the growth of tissue Y.

Description : Which of the following best illustrates feedback in development? (a) Tissue X secretes RNA which changes the development of tissue Y. (b) As tissue X develops, it secretes enzymes that inhibit the ... . (d) As tissue X develops, it secretes something that slows down the growth of tissue Y.

Last Answer : (c) As tissue X develops, it secretes something that induces tissue Y to develop

If sometime in the future we discovered or created a new species that is comparable in sapience to humans (for example a moogle), would humanity slide back into slavery or would we be able to avoid such a development and bestow this species full human rights?

Description : If sometime in the future we discovered or created a new species that is comparable in sapience to humans (for example a moogle), would humanity slide back into slavery or would we be able to avoid such a development and bestow this species full human rights?

Last Answer : Well, if it were a moogle, they’d probably enslave us all, and we’d lose our human rights with our humanity. But if it were a floogle, then we would remain pure of heart and pristine of soul, and bestow upon them all the perquisites and rights pertaining thereto!

How many meiotic divisions are required to produce 200 microspores from functional microspore mother cell

Description : 1. How many meiotic divisions are required to produce 200 microspores from functional microspore mother cell ? a) 400 b) 50 c) 200 d) 100

Last Answer : b) 50

.Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child? (a) Two X chromosomes (b) Only one Y chromosome (c) Only one X chromosome (d) One X and one Y chromosome

Description : .Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child? (a) Two X chromosomes (b) Only one Y chromosome (c) Only one X chromosome (d) One X and one Y chromosome

Last Answer : (a) Two X chromosomes

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))

The term ‘Test Tube Baby’ implies (a) Fertilisation of ovum takes place I the test tube but it develops in uterus (b) Fertilisation of ovum takes place in the test tube and develops in the test tube itself (c) Fertilisation of the ovum takes place in the uterus but develops in the test tube (d) Fertilisation takes place in uterus and embryo develops in uterus

Description : The term Test Tube Baby' implies (a) Fertilisation of ovum takes place I the test tube but it develops in uterus (b) Fertilisation of ovum takes place in the test tube and develops in ... uterus but develops in the test tube (d) Fertilisation takes place in uterus and embryo develops in uterus

Last Answer : Ans:(a)

Name the organ where the embryo develops - (1) Uterus (2) Fallopian tube (3) Ureter (4) Cervix

Description : Name the organ where the embryo develops - (1) Uterus (2) Fallopian tube (3) Ureter (4) Cervix

Last Answer : (3) Uterus Explanation: In a placental mammal, an ovam is fertilized in a fallopian tube through which it travels into the uterus.

In angiosperms, functional megaspore develops into (a) embryo sac (b) ovule (c) endosperm (d) pollen sac.

Description : In angiosperms, functional megaspore develops into (a) embryo sac (b) ovule (c) endosperm (d) pollen sac.

Last Answer : a) embryo sac

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

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

Functional megaspore in an angiosperm develops into ? (1) Endosperm (2) Embryo sac (3) Embryo (4) Ovule

Description : Functional megaspore in an angiosperm develops into ? (1) Endosperm (2) Embryo sac (3) Embryo (4) Ovule

Last Answer : (2) Embryo sac

In angiosperms, functional megaspore develops into:a) Embryo sacb) Ovulec) Endospermd) Pollen sac

Description : Vegetative propagation is Pistiaoccurs bya) StIn angiosperms, functional megaspore develops into:a) Embryo sacb) Ovulec) Endospermd) Pollen sacolenb) Offsetc) Runnerd) Sucker

Last Answer : Embryo sac

Regarding tolerance and addiction, the nurse understands that a) although patients may need increasing levels of opioids, they are not addicted. Physical tolerance usually occurs in the absence of addiction. b) tolerance to opioids is uncommon. Tolerance to opioids is common. c) addiction to opioids commonly develops. Addiction to opioids is rare. d) the nurse must be primarily concerned about development of addiction by the patient in pain. Addiction is rare and should never be the primary concern for a patient in pain.

Description : Regarding tolerance and addiction, the nurse understands that a) although patients may need increasing levels of opioids, they are not addicted. Physical tolerance usually occurs in the absence of addiction. b ... pain. Addiction is rare and should never be the primary concern for a patient in pain.

Last Answer : a) although patients may need increasing levels of opioids, they are not addicted. Physical tolerance usually occurs in the absence of addiction.

The stage transferred into the uterus after induced fertilisation of ovum in the laboratory is (a) embryo at 4 blastomeres stage (b) embryo at 2 blastomeres stage (c) morula (d) zygote.

Description : The stage transferred into the uterus after induced fertilisation of ovum in the laboratory is (a) embryo at 4 blastomeres stage (b) embryo at 2 blastomeres stage (c) morula (d) zygote.

Last Answer : (c) morula

Meiosis is best observed in dividing (a) cells of apical meristem (b) cells of lateral meristem (c) microspores and anther wall (d) microsporocytes.

Description : Meiosis is best observed in dividing (a) cells of apical meristem (b) cells of lateral meristem (c) microspores and anther wall (d) microsporocytes.

Last Answer : (d) microsporocytes.

In angiosperm, all the four microspores of tetrad are covered by a layer which is formed by (a) pectocellulose (b) callose (c) cellulose (d) sporopollenin

Description : In angiosperm, all the four microspores of tetrad are covered by a layer which is formed by (a) pectocellulose (b) callose (c) cellulose (d) sporopollenin

Last Answer : (a) pectocellulose

21. Asexual microscopic motile reproductive structures are called ... b) Microspores b) Zoospores c) Conidiospores d) Aplanospores

Description : 21. Asexual microscopic motile reproductive structures are called ... b) Microspores b) Zoospores c) Conidiospores d) Aplanospores

Last Answer : d) Aplanospores

1. Asexual microscopic motile reproductive structures are called ... a) Microspores b) Zoospores c) Conidiospores d) Aplanospores

Description : 1. Asexual microscopic motile reproductive structures are called ... a) Microspores b) Zoospores c) Conidiospores d) Aplanospores

Last Answer : d) Aplanospores

$ Zygotic meiosis occurs at the time of germination of zygote. ! Zyogote may be diploid or triploid

Description : $ Zygotic meiosis occurs at the time of germination of zygote. ! Zyogote may be diploid or triploid

Last Answer : $ Zygotic meiosis occurs at the time of germination of zygote. ! Zyogote may be diploid or triploid A. If ... is wrong D. If both As and R are wrong.

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

Hybrid varieties of cucumber grown in tunnels are: a. Parthenocarpic b. Zygotic c. Both types d. None of these

Description : Hybrid varieties of cucumber grown in tunnels are: a. Parthenocarpic b. Zygotic c. Both types d. None of these

Last Answer : Parthenocarpic

Zygotic meiosis is characteristic of (a) Fucus (b) Funaria (c) Chlamydomonas (d) Marchantia

Description : Zygotic meiosis is characteristic of (a) Fucus (b) Funaria (c) Chlamydomonas (d) Marchantia

Last Answer : (c) Chlamydomonas

2.Which of the following organism shows zygotic meiosis? (a) Nephrolepis, b)Pinus, c) Spirogyra d) mango)

Description : 2.Which of the following organism shows zygotic meiosis? (a) Nephrolepis, b)Pinus, c) Spirogyra d) mango)

Last Answer : c) Spirogyra

Zygotic meiosis is characteristic of; (1) Fucus (2) Funaria (3) Chlamydomonas (4) Marchantia

Description : Zygotic meiosis is characteristic of; (1) Fucus (2) Funaria (3) Chlamydomonas (4) Marchantia

Last Answer : (3) Chlamydomonas

What external changes are visible after the last moult of a cockroach nymph? (a) Both forewings and hindwings develop (b) Labium develops (c) Mandibles become harder (d) Anal cerci develop

Description : What external changes are visible after the last moult of a cockroach nymph? (a) Both forewings and hindwings develop (b) Labium develops (c) Mandibles become harder (d) Anal cerci develop

Last Answer : (a) Both forewings and hindwings develop

Tolerance does not develop to the vasodilator action of sodium nitroprusside while it develops to glyceryl trinitrate because: A. Intact sod. nitroprusside molecule acts like nitric oxide B. Enzymes which generate nitric oxide from nitroprusside are different C. Sod. nitroprusside has a long duration of action D. Sod. nitroprusside has additional K+ channel opening action

Description : Tolerance does not develop to the vasodilator action of sodium nitroprusside while it develops to glyceryl trinitrate because: A. Intact sod. nitroprusside molecule acts like nitric oxide B. Enzymes which ... a long duration of action D. Sod. nitroprusside has additional K+ channel opening action

Last Answer : B. Enzymes which generate nitric oxide from nitroprusside are different