Double fertilisation is fusion of (a) two eggs (b) two eggs and polar nuclei with pollen nuclei (c) one male gamete with egg and other with synergid (d) one male gamete with egg and other with secondary nucleus.

Double fertilisation is fusion of
(a) two eggs
(b) two eggs and polar nuclei with pollen nuclei
(c) one male gamete with egg and other with
synergid
(d) one male gamete with egg and other with
secondary nucleus.
by

1 Answer

Answer :

(d) one male gamete with egg and other with
secondary nucleus.
by

Related questions

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

Endosperm is formed during the double fertilisation by (a) two polar nuclei and one male gamete (b) one polar nuclei and one male gamete (c) ovum and male gamete (d) two polar nuclei and two male gametes.

Description : Endosperm is formed during the double fertilisation by (a) two polar nuclei and one male gamete (b) one polar nuclei and one male gamete (c) ovum and male gamete (d) two polar nuclei and two male gametes.

Last Answer : (a) two polar nuclei and one male gamete

What is the fate of the male gametes discharged in the synergid? (a) One fuses with the egg and other fuses with central cell nuclei. (b) One fuses with the egg, other(s) degenerates in the synergid. (c) All fuse with the egg. (d) One fuses with the egg, other(s) fuse(s) with synergid nucleus.

Description : What is the fate of the male gametes discharged in the synergid? (a) One fuses with the egg and other fuses with central cell nuclei. (b) One fuses with the egg, other(s) degenerates in the synergid. (c) All fuse with the egg. (d) One fuses with the egg, other(s) fuse(s) with synergid nucleus.

Last Answer : (a) One fuses with the egg and other fuses with central cell nuclei.

When embryosac receives two or more than two pollen tubes the sperm nucleus fusing with the egg nucleus may be derived from one pollen tube and one fusing with the polar nuclei may be derived from other pollen tube, the phenomenon is termed as

Description : When embryosac receives two or more than two pollen tubes the sperm nucleus fusing with the egg nucleus may be derived from one pollen tube and one fusing with the polar nuclei may be derived from other pollen tube, the phenomenon is termed as

Last Answer : When embryosac receives two or more than two pollen tubes the sperm nucleus fusing with the egg nucleus may be derived from one pollen tube and one fusing with the polar nuclei may be derived from other pollen tube, the phenomenon is termed as – Heterofertilization

Which one of the following is surrounded by a callose wall? (a) Male gamete (b) Egg (c) Pollen grain (d) Microspore mother cell

Description : Which one of the following is surrounded by a callose wall? (a) Male gamete (b) Egg (c) Pollen grain (d) Microspore mother cell

Last Answer : (d) Microspore mother cell

Through which cell of the embryo sac, does the pollen tube enter the embryo sac? (a) Egg cell (b) Persistant synergid (c) Degenerated synergids (d) Central cell

Description : Through which cell of the embryo sac, does the pollen tube enter the embryo sac? (a) Egg cell (b) Persistant synergid (c) Degenerated synergids (d) Central cell

Last Answer : c) Degenerated synergids

What does the filiform apparatus do at the entrance into ovule? (a) It brings about opening of the pollen tube. (b) It guides pollen tube from a synergid to egg. (c) It helps in the entry of pollen tube into a synergid. (d) It prevents entry of more than one pollen tube into the embryo sac

Description : What does the filiform apparatus do at the entrance into ovule? (a) It brings about opening of the pollen tube. (b) It guides pollen tube from a synergid to egg. (c) It helps in the entry of pollen tube into a synergid. (d) It prevents entry of more than one pollen tube into the embryo sac

Last Answer : (b) It guides pollen tube from a synergid to egg.

In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilisation? (a) Gamete Intracytoplasmic Fallopian Transfer (b) Artificial Insemination (c) Intracytoplasmic sperm injection (d) Intrauterine transfer

Description : In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilisation? (a) Gamete Intracytoplasmic Fallopian Transfer (b) Artificial Insemination (c) Intracytoplasmic sperm injection (d) Intrauterine transfer

Last Answer : (b) Artificial Insemination

In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilisation ? (1) Gamete intracytoplasmic fallopian transfer (2) Artificial Insemination (3) Intracytoplasmic sperm injection (4) Intrauterine transfer

Description : In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilisation ? (1) Gamete intracytoplasmic fallopian transfer (2) Artificial Insemination (3) Intracytoplasmic sperm injection (4) Intrauterine transfer

Last Answer : (2) Artificial Insemination

Assertion : When sperm enters in egg , one polar body is released in human . Reason : At the time of ovulation eggs found in secondary Oocyte phase .

Description : Assertion : When sperm enters in egg , one polar body is released in human . Reason : At the time of ovulation eggs found in secondary Oocyte phase .

Last Answer : Assertion : When sperm enters in egg , one polar body is released in human . Reason : At the time ... False . D. If both Assertion & Reason are False.

(3) two light nuclei combine to form a heavy nucleus Explanation: Nuclear fusion is the process of making a single heavy nucleus (part of an atom) from two lighter nuclei. The difference in mass between the products and reactants is manifested as the release of large amounts of energy. Fusion is the process that powers active or "main sequence" stars, or other high magnitude stars.

Description : (3) two light nuclei combine to form a heavy nucleus Explanation: Nuclear fusion is the process of making a single heavy nucleus (part of an atom) from two lighter nuclei. The difference in mass ... . Fusion is the process that powers active or "main sequence" stars, or other high magnitude stars.

Last Answer : Helium is added to the oxygen supply of deep sea divers because it is - (1) less poisonous than nitrogen (2) (2) Lighter than nitrogen (3) Readily miscible with oxygen (4) less soluble in blood than nitrogen at high pressure

Which one of the following statements is wrong? (a) When pollen is shed at two-celled stage, double fertilisation does not take place. (b) Vegetative cell is larger than generative cell. (c) Pollen grains in some plants remain viable for months. (d) Intine is made up of cellulose and pectin.

Description : Which one of the following statements is wrong? (a) When pollen is shed at two-celled stage, double fertilisation does not take place. (b) Vegetative cell is larger than generative cell. (c) Pollen grains in some plants remain viable for months. (d) Intine is made up of cellulose and pectin.

Last Answer : (a) When pollen is shed at two-celled stage, double fertilisation does not take place.

The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called - (1) Nuclear fusion (2) Nuclear fission (3) Nuclear reaction (4) Fast breeding

Description : The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called - (1) Nuclear fusion (2) Nuclear fission (3) Nuclear reaction (4) Fast breeding

Last Answer : (2) Nuclear fission Explanation: Nuclear fission is a process used to create energy. It is when an atom splits apart into smaller atoms. The process gives off a lot of energy, and is used in nuclear weapons and nuclear reactors.

The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called - (1) Nuclear fusion (2) Nuclear fission (3) Nuclear reaction (4) Fast breeding

Description : The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called - (1) Nuclear fusion (2) Nuclear fission (3) Nuclear reaction (4) Fast breeding

Last Answer : (2) Nuclear fission Explanation: Nuclear fission is a process used to create energy. It is when an atom splits apart into smaller atoms. The process gives off a lot of energy, and is used in nuclear weapons and nuclear reactors.

In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called ? A. Chemical Reaction B. Nuclear reaction C. Fission nuclear reaction D. Fusion nuclear reaction (Answer) E. None of these

Description : In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear ... reaction C. Fission nuclear reaction D. Fusion nuclear reaction (Answer) E. None of these

Last Answer : D. Fusion nuclear reaction (Answer)

Which one of the following takes place during a nuclear fusion? (1) a heavy nucleus bombarded by neutrons breaks up (2) a heavy nucleus breaks up spontaneously (3) two light nuclei combine to form a heavy nucleus (4) a light nucleus breaks up spontaneously

Description : Which one of the following takes place during a nuclear fusion? (1) a heavy nucleus bombarded by neutrons breaks up (2) a heavy nucleus breaks up spontaneously (3) two light nuclei combine to form a heavy nucleus (4) a light nucleus breaks up spontaneously

Last Answer : two light nuclei combine to form a heavy nucleus

Extrusion of second polar body from egg occurs (a) simultaneously with first cleavage (b) after entry of sperm but before fertilisation (c) after fertilisation (d) before entry of sperm into ovum.

Description : Extrusion of second polar body from egg occurs (a) simultaneously with first cleavage (b) after entry of sperm but before fertilisation (c) after fertilisation (d) before entry of sperm into ovum.

Last Answer : (b) after entry of sperm but before fertilisation

Double fertilisation and triple fusion were discovered by (a) Hofmeister (b) Nawaschin and Guignard (c) Leeuwenhoek (d) Strasburger

Description : Double fertilisation and triple fusion were discovered by (a) Hofmeister (b) Nawaschin and Guignard (c) Leeuwenhoek (d) Strasburger

Last Answer : (b) Nawaschin and Guignard

Polar nuclei and double fertilization -Biology

Description : Polar nuclei and double fertilization -Biology

Last Answer : answer:

Polar nuclei and double fertilization -Biology

Description : Polar nuclei and double fertilization -Biology

Last Answer : answer:

Filiform apparatus is a characteristic feature of (a) suspensor (b) egg (c) synergid (d) zygote.

Description : Filiform apparatus is a characteristic feature of (a) suspensor (b) egg (c) synergid (d) zygote.

Last Answer : (c) synergid

The technique called Gamete Intra Fallopian Transfer (GIFT) is recommended for those females (a) who cannot produce an ovum (b) who cannot retain the fetus inside uterus (c) whose cervical canal is too narrow to allow passage for the sperms (d) who cannot provide suitable environment for fertilisation.

Description : The technique called Gamete Intra Fallopian Transfer (GIFT) is recommended for those females (a) who cannot produce an ovum (b) who cannot retain the fetus inside uterus (c) whose cervical ... narrow to allow passage for the sperms (d) who cannot provide suitable environment for fertilisation.

Last Answer : (a) who cannot produce an ovum

A childless couple can be assisted to have a child through a technique called GIFT. The full form of this technique is (a) Gamete Internal Fertilisation and Transfer (b) Germ cell Internal Fallopian Transfer (c) Gamete Inseminated Fallopian Transfer (d) Gamete Intra Fallopian Transfer.

Description : A childless couple can be assisted to have a child through a technique called GIFT. The full form of this technique is (a) Gamete Internal Fertilisation and Transfer (b) Germ cell Internal Fallopian Transfer (c) Gamete Inseminated Fallopian Transfer (d) Gamete Intra Fallopian Transfer.

Last Answer : (d) Gamete Intra Fallopian Transfer.

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 of the following is without exception in angiosperms? (a) Presence of vessels (b) Double fertilisation (c) Secondary growth (d) Autotrophic nutrition

Description : Which of the following is without exception in angiosperms? (a) Presence of vessels (b) Double fertilisation (c) Secondary growth (d) Autotrophic nutrition

Last Answer : (b) Double fertilisation

In double fertilization, the two male nuclei fuse with

Description : In double fertilization, the two male nuclei fuse with

Last Answer : In double fertilization, the two male nuclei fuse with – Egg cell and Definitive nucleus

In angiosperms, pollen tube liberate their male gametes into the (a) central cell (b) antipodal cells (c) egg cell (d) synergids.

Description : In angiosperms, pollen tube liberate their male gametes into the (a) central cell (b) antipodal cells (c) egg cell (d) synergids.

Last Answer : d) synergids.

The fusion of female reproductive nucleus with the male reproductive nucleus is known as

Description : 1. The fusion of female reproductive nucleus with the male reproductive nucleus is known as 1. Syngamy 2. Excretion 3. Fertilization 4. Regeneration

Last Answer : Syngamy

102.Perisperm differs from endosperm in (a) being a diploid tissue (b) its formation by fusion of secondary nucleus with several sperms (c) being a haploid tissue (d) having no reserve food.

Description : 102.Perisperm differs from endosperm in (a) being a diploid tissue (b) its formation by fusion of secondary nucleus with several sperms (c) being a haploid tissue (d) having no reserve food.

Last Answer : (a) being a diploid tissue

2. Perisperm and endosperm differ in a. Being a diploid tissue b. Being a haploid tissue c. Having no reserve food d. Formation of perisperm by fusion of the secondary nucleus with many sperms

Description : 2. Perisperm and endosperm differ in a. Being a diploid tissue b. Being a haploid tissue c. Having no reserve food d. Formation of perisperm by fusion of the secondary nucleus with many sperms

Last Answer : d. Formation of perisperm by fusion of the secondary nucleus with many sperms

Perisperm differs from endosperm in :a)Being a diploid tissueb)Its formation by fusion of secondary nucleus with several sperms c)Being a haploid tissued)Having no reserve food

Description : Perisperm differs from endosperm in :a)Being a diploid tissueb)Its formation by fusion of secondary nucleus with several sperms c)Being a haploid tissued)Having no reserve food

Last Answer : 3Being a diploid tissue

Pollen tablets are available in the market for (a) in vitro fertilisation (b) breeding programmes (c) supplementing food (d) ex situ conservation.

Description : Pollen tablets are available in the market for (a) in vitro fertilisation (b) breeding programmes (c) supplementing food (d) ex situ conservation.

Last Answer : (c) supplementing food (

Geitonogamy involves (a) fertilisation of a flower by the pollen from another flower of the same plant (b) fertilisation of a flower by the pollen from the same flower (c) fertilisation of a flower by the pollen from a flower of another plant in the same population (d) fertilisation of a flower by the pollen from a flower of another plant belonging to a distant population.

Description : Geitonogamy involves (a) fertilisation of a flower by the pollen from another flower of the same plant (b) fertilisation of a flower by the pollen from the same flower (c) fertilisation of a flower ... of a flower by the pollen from a flower of another plant belonging to a distant population.

Last Answer : (a) fertilisation of a flower by the pollen from another flower of the same plant

Which one of the following pairs of plant structures has haploid number of chromosomes? (a) Nucellus and antipodal cells (b) Egg nucleus and secondary nucleus (c) Megaspore mother cell and antipodal cells (d) Egg cell and antipodal cells

Description : Which one of the following pairs of plant structures has haploid number of chromosomes? (a) Nucellus and antipodal cells (b) Egg nucleus and secondary nucleus (c) Megaspore mother cell and antipodal cells (d) Egg cell and antipodal cells

Last Answer : d) Egg cell and antipodal cells

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.

Which spore is on a club and results from the fusion of two nuclei from different strains ofthesame fungi? A- Ascospore B- Basidiospore C- Blastospore D- Conidiospore

Description : Which spore is on a club and results from the fusion of two nuclei from different strains ofthesame fungi? A- Ascospore B- Basidiospore C- Blastospore D- Conidiospore

Last Answer : Basidiospore

Statement-1 : Energy is released in the nuclear fusion of hydrogen nuclei to form helium nuclei Because Statement-2 : Binding energy per nucleon of he

Description : Statement-1 : Energy is released in the nuclear fusion of hydrogen nuclei to form helium nuclei Because Statement-2 : Binding energy per nucleon of he

Last Answer : Statement-1 : Energy is released in the nuclear fusion of hydrogen nuclei to form helium nuclei Because ... Statement-2 is false, statement-2 is true

What refers to the strong repulsion between the positively charged nuclei which makes fusion reaction difficult to attain?  A. Atomic repulsion  B. Nuclear repulsion  C. Coulomb repulsion  D. Charge repulsion

Description : What refers to the strong repulsion between the positively charged nuclei which makes fusion reaction difficult to attain?  A. Atomic repulsion  B. Nuclear repulsion  C. Coulomb repulsion  D. Charge repulsion

Last Answer : Coulomb repulsion

What is triple fusion? Name the nuclei involved in triple fusion.

Description : What is triple fusion? Name the nuclei involved in triple fusion.

Last Answer : Ans: Fusion of male gamete with diploid secondary nucleus to form triploid primary endosperm nucleus is known as triple fusion. In triple fusion two polar nuclei and one male gamete are involved.

(a) IN WHICH PART OF HUMAN FEMALE REPRODUCTIVE SYSTEM DO THE FOLLOWING EVENTS TAKE PLACE. (i) RELEASE OF FIRST POLAR BODY (ii) RELEASE OF SECOND POLAR BODY (iii) FERTILISATION (iv) IMPLANTATION (b) NAME TWO HORMONES SECREATED ONLY DURING PREGNANCY.

Description : (a) IN WHICH PART OF HUMAN FEMALE REPRODUCTIVE SYSTEM DO THE FOLLOWING EVENTS TAKE PLACE. (i) RELEASE OF FIRST POLAR BODY (ii) RELEASE OF SECOND POLAR BODY (iii) FERTILISATION (iv) IMPLANTATION (b) NAME TWO HORMONES SECREATED ONLY DURING PREGNANCY.

Last Answer : ANS (a) (i) OVARY (ii) FALLOPIAN TUBE (iii) AMPULLA-ISTHAMUS JUNCTION OF FALLOPIAN TUBE (iv) ENDOMETRIUM LINING OF UTERUS (b) HUMAN CHORIONIC GONADOTROPIN AND HUMAN PLACENTAL LACTOGEN

Synapsis occurs between (a) mRNA and ribosomes (b) spindle fibres and centromere (c) two homologous chromosomes (d) a male and a female gamete.

Description : Synapsis occurs between (a) mRNA and ribosomes (b) spindle fibres and centromere (c) two homologous chromosomes (d) a male and a female gamete.

Last Answer : (c) two homologous chromosomes

In tobacco plant, the male gametes have twenty four chromosomes. What is the number of chromosomes in the female gamete? What is the number of chromosomes in the zygote? -Biology

Description : In tobacco plant, the male gametes have twenty four chromosomes. What is the number of chromosomes in the female gamete? What is the number of chromosomes in the zygote? -Biology

Last Answer : The number of chromosome in the female gamete would be same as that in the male gamete, i.e., it will have 24 chromosomes. The number of chromosome in the zygote would be double the number present in the gamete and hence, it would be 48.

In a flowering plant male gamete is formed inside _____ -Science-7

Description : In a flowering plant male gamete is formed inside _____ -Science-7

Last Answer : In a flowering plant male gamete is formed inside anther.

How many meiotic divisions are required during the formation of 500 zzygotes, if in males one meiotic division result in formation of four male gamete

Description : How many meiotic divisions are required during the formation of 500 zzygotes, if in males one meiotic division result in formation of four male gamete

Last Answer : How many meiotic divisions are required during the formation of 500 zzygotes, if in males one meiotic division ... A. 625 B. 500 C. 1000 D. 2500

The male gamete producing structure of bryophyte is

Description : The male gamete producing structure of bryophyte is

Last Answer : antheridia.

The microsporogenesis is the formation of a. Male gamete b. Female gamtete c. Female and male gamete d. Non of these

Description : The microsporogenesis is the formation of a. Male gamete b. Female gamtete c. Female and male gamete d. Non of these

Last Answer : Male gamete

Select the wrong statement. (a) In oomycetes, female gamete is smaller and motile, while male gamete is larger and non- motile. (b) Chlamydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy. (c) Isogametes are similar in structure, function and behaviour. (d) Anisogametes differ either in structure, function or behaviour.

Description : Select the wrong statement. (a) In oomycetes, female gamete is smaller and motile, while male gamete is larger and non- motile. (b) Chlamydomonas exhibits both isogamy and anisogamy and ... in structure, function and behaviour. (d) Anisogametes differ either in structure, function or behaviour.

Last Answer : (a) In oomycetes, female gamete is smaller and motile, while male gamete is larger and non- motile.

What happens to polar nuclei after fertilization? -Biology

Description : What happens to polar nuclei after fertilization? -Biology

Last Answer : answer:

How many polar nuclei are in the ovule of the angiosperm? -Biology

Description : How many polar nuclei are in the ovule of the angiosperm? -Biology

Last Answer : answer: