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

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
by

1 Answer

Answer :

(b) It guides pollen tube from a synergid to egg.
by

Related questions

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

In majority of angiosperms, (a) egg has a filiform apparatus (b) there are numerous antipodal cells (c) reduction division occurs in the megaspore mother cells (d) a small central cell is present in that embryo sac.

Description : In majority of angiosperms, (a) egg has a filiform apparatus (b) there are numerous antipodal cells (c) reduction division occurs in the megaspore mother cells (d) a small central cell is present in that embryo sac.

Last Answer : (c) reduction division occurs in the megaspore mother cells

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

Function of filiform apparatus is to (a) recognise the suitable pollen at stigma (b) stimulate division of generative cell (c) produce nectar (d) guide the entry of pollen tube.

Description : Function of filiform apparatus is to (a) recognise the suitable pollen at stigma (b) stimulate division of generative cell (c) produce nectar (d) guide the entry of pollen tube.

Last Answer : (d) guide the entry of pollen tube.

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

Function of filiform apparatus is toa)Guide the entry of pollen tubeb)Recognize the suitable pollen at stigmac)Stimulate division of generative celld)Produce nectar

Description : Function of filiform apparatus is toa)Guide the entry of pollen tubeb)Recognize the suitable pollen at stigmac)Stimulate division of generative celld)Produce nectar

Last Answer : )Guide the entry of pollen tube

In gymnosperms, the pollen chamber represents (a) a cavity in the ovule in which pollen grains are stored after pollination (b) an opening in the megagametophyte through which the pollen tube approaches the egg(c) the microsporangium in which pollen grains develop (d) a cell in the pollen grain in which the sperms are formed.

Description : In gymnosperms, the pollen chamber represents (a) a cavity in the ovule in which pollen grains are stored after pollination (b) an opening in the megagametophyte through which the pollen tube approaches the ... pollen grains develop (d) a cell in the pollen grain in which the sperms are formed.

Last Answer : (c) the microsporangium in which pollen grains develop

The plant parts which consist of two generations- one within the other (1) pollen grains inside the anther (2) germinated pollen grain with two male gametes (3) seed inside the fruit (4) embryo sac inside the ovule (a) (1) only (b) (1), (2), and (3) (c) (3) and (4)

Description : The plant parts which consist of two generations- one within the other (1) pollen grains inside the anther (2) germinated pollen grain with two male gametes (3) seed inside the fruit (4) embryo sac inside the ovule (a) (1) only (b) (1), (2), and (3) (c) (3) and (4)

Last Answer : (d) (1) and (4).

In angiosperm female gametophyte is: a) Embryo b) Egg Apparatus c)Embryo sac d) synergids

Description : In angiosperm female gametophyte is: a) Embryo b) Egg Apparatus c)Embryo sac d) synergids

Last Answer : Ans: c)Embryo sac

$ Fertilization with the help of a pollen tube is called Siphonogamy. ! Entry of pollen tube into the ovule through integuments is called Mesogamy.

Description : $ Fertilization with the help of a pollen tube is called Siphonogamy. ! Entry of pollen tube into the ovule through integuments is called Mesogamy.

Last Answer : $ Fertilization with the help of a pollen tube is called Siphonogamy. ! Entry of pollen tube into the ovule ... wrong D. If both As and R are wrong.

Filiform apparatus is characteristic feature of (a) aleurone cell (b) synergids (c) generative cell (d) nucellar embryo.

Description : Filiform apparatus is characteristic feature of (a) aleurone cell (b) synergids (c) generative cell (d) nucellar embryo.

Last Answer : (b) synergids

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.

Description : 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.

Last Answer : (d) one male gamete with egg and other with secondary nucleus.

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

Difference between ovule and embryo sac. -Biology

Description : Difference between ovule and embryo sac. -Biology

Last Answer : answer:

Difference between ovule and embryo sac? -Biology

Description : Difference between ovule and embryo sac? -Biology

Last Answer : answer:

Difference between ovule and embryo sac. -Biology

Description : Difference between ovule and embryo sac. -Biology

Last Answer : answer:

Difference between ovule and embryo sac? -Biology

Description : Difference between ovule and embryo sac? -Biology

Last Answer : answer:

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))

.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

Embryo sac occurs in (a) embryo (b) axis part of embryo (c) ovule (d) endosperm.

Description : Embryo sac occurs in (a) embryo (b) axis part of embryo (c) ovule (d) endosperm.

Last Answer : (c) ovule

Female gametophyte of angiosperms is represented by (a) ovule (b) megaspore mother cell (c) embryo sac (d) nucellus.

Description : Female gametophyte of angiosperms is represented by (a) ovule (b) megaspore mother cell (c) embryo sac (d) nucellus.

Last Answer : (c) embryo sac

Ovule is straight with funiculus, embryo sac, chalaza and micropyle lying on one straight line. It is (a) orthotropous (b) anatropous (c) campylotropous (d) amphitropous.

Description : Ovule is straight with funiculus, embryo sac, chalaza and micropyle lying on one straight line. It is (a) orthotropous (b) anatropous (c) campylotropous (d) amphitropous.

Last Answer : a) orthotropous

An ovule which becomes curved so that the nucellus and embryo sac lie at right angles to the funicle is (a) hemitropous (b) campylotropous (c) anatropous (d) orthotropous.

Description : An ovule which becomes curved so that the nucellus and embryo sac lie at right angles to the funicle is (a) hemitropous (b) campylotropous (c) anatropous (d) orthotropous.

Last Answer : (a) hemitropous

Which one of the following represents an ovule, where the embryo sac becomes horse-shoe shaped and the funiculus and micropyle are close to each other? (a) Amphitropous (b) Circinotropous (c) Atropous (d) Anatropous

Description : Which one of the following represents an ovule, where the embryo sac becomes horse-shoe shaped and the funiculus and micropyle are close to each other? (a) Amphitropous (b) Circinotropous (c) Atropous (d) Anatropous

Last Answer : (a) Amphitropous

Megasporangium is equivalent to (a) nucellus (b) ovule (c) embryo sac (d) fruit

Description : Megasporangium is equivalent to (a) nucellus (b) ovule (c) embryo sac (d) fruit

Last Answer : (b) ovule

8. Embryo sac is located inside the 1. Stigma 2. Ovule 3. Micropyle 4. Style

Description : 8. Embryo sac is located inside the 1. Stigma 2. Ovule 3. Micropyle 4. Style

Last Answer : Ans: Ovule

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

Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus? (a) Yolk sac (b) Amnion (c) Chorion (d) Allantosis

Description : Which extraembryonic membrane in humans prevents desiccation of the embryo inside the uterus? (a) Yolk sac (b) Amnion (c) Chorion (d) Allantosis

Last Answer : (b) Amnion

Point out the odd one. (a) Nucellus (b) Embryo sac (c) Micropyle (d) Pollen grain

Description : Point out the odd one. (a) Nucellus (b) Embryo sac (c) Micropyle (d) Pollen grain

Last Answer : (d) Pollen grain

Pollen tube attraction near ovule is facilitated by -Biology

Description : Pollen tube attraction near ovule is facilitated by -Biology

Last Answer : answer:

Pollen tube attraction near ovule is facilitated by -Biology

Description : Pollen tube attraction near ovule is facilitated by -Biology

Last Answer : answer:

What is the egg cell in the embryo sac? -Biology

Description : What is the egg cell in the embryo sac? -Biology

Last Answer : answer:

What is the egg cell in the embryo sac? -Biology

Description : What is the egg cell in the embryo sac? -Biology

Last Answer : answer:

Microsporogenesis is the formation of : a) Microspore b) Megaspore c) Egg d) Embryo sac

Description : Microsporogenesis is the formation of : a) Microspore b) Megaspore c) Egg d) Embryo sac

Last Answer : Ans : a) Microspore

The structure which helps in the nutrition of the Embryo is – (1) Yolk sac (2) Amniotic membrane (3) Crypts (4) Placenta

Description : The structure which helps in the nutrition of the Embryo is – (1) Yolk sac (2) Amniotic membrane (3) Crypts (4) Placenta

Last Answer : (1) Yolk sac Explanation: The yolk sac is a membranous sac attached to an embryo, providing early nourishment. It functions as the developmental circulatory system of the human embryo, ... It carries out transfer of nutrients in weeks 2 and 3 when the uteroplacental circulation is established

The structure which helps in the nutrition of the Embryo is (1) Yolk sac (2) Amniotic membrane (3) Crypts (4) Placenta

Description : The structure which helps in the nutrition of the Embryo is (1) Yolk sac (2) Amniotic membrane (3) Crypts (4) Placenta

Last Answer : Yolk sac 

I am taking the ASVAB on Tuesday. Where can I find some online study guides for this military entrance exam?

Description : I am taking the ASVAB on Tuesday. Where can I find some online study guides for this military entrance exam?

Last Answer : Here you go, some practice tests for you!: http://www.military.com/ASVAB

Filiform apparatus is a characteristic feature of:a) Suspensorb) Eggc) Synergidd) Zygote

Description : Filiform apparatus is a characteristic feature of:a) Suspensorb) Eggc) Synergidd) Zygote

Last Answer : c) Synergid

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.

Entry of pollen tube through micropyle is (a) chalazogamy (b) mesogamy (c) porogamy (d) pseudogamy.

Description : Entry of pollen tube through micropyle is (a) chalazogamy (b) mesogamy (c) porogamy (d) pseudogamy.

Last Answer : (c) porogamy

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

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.

Blastopore is (a) opening of neural tube (b) opening of gastrocoel (c) future anterior end of embryo (d) found in blastula.

Description : Blastopore is (a) opening of neural tube (b) opening of gastrocoel (c) future anterior end of embryo (d) found in blastula.

Last Answer : b) opening of gastrocoel

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

In the case of test tube babies (1) egg is fertilized in the uterus. (2) embryo completes its development in a test tube. (3) embryo is placed in uterus after 2 months. (4) egg is fertilized outside mother's body.

Description : In the case of test tube babies (1) egg is fertilized in the uterus. (2) embryo completes its development in a test tube. (3) embryo is placed in uterus after 2 months. (4) egg is fertilized outside mother's body.

Last Answer : (3) embryo is placed in uterus after 2 months. Explanation: Prior of the implantation of the blastocyst the uterus of the recipient mother should be made ready to receive the embryo. This is ... done with the hormonal treatment. The blastocyst is introduced into the uterus by one of the two methods

Which of the following statements is correct with reference to a test tube baby? (a) Fertilisation of the egg is effected outside the body; the fertilised egg is then placed in the womb of the mother where the gestation is completed. (b) Fertilisation of the egg is effected in the female genital tract. It is then taken out and grown in a large test tube. (c) A prematurely born baby is reared in an incubator. (d) Fertilisation of the egg and growth of the embryo are affected in a large test tube.

Description : Which of the following statements is correct with reference to a test tube baby? (a) Fertilisation of the egg is effected outside the body; the fertilised egg is then placed in the womb of the mother ... . (d) Fertilisation of the egg and growth of the embryo are affected in a large test tube.

Last Answer : (a) Fertilisation of the egg is effected outside the body; the fertilised egg is then placed in the womb of the mother where the gestation is completed.

In the case of test tube babies (1) egg is fertilized in the uterus. (2) embryo completes its development in a test tube. (3) embryo is placed in uterus after 2 months. (4) egg is fertilized outside mother’s body.

Description : In the case of test tube babies (1) egg is fertilized in the uterus. (2) embryo completes its development in a test tube. (3) embryo is placed in uterus after 2 months. (4) egg is fertilized outside mother’s body. 

Last Answer : embryo is placed in uterus after 2 months.

When pollen connects with an ovule in the ovary?

Description : When pollen connects with an ovule in the ovary?

Last Answer : What is the answer ?