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.

1 Answer

Answer :

(d) guide the entry of pollen tube.

Related questions

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

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.

Description : Generative cell was destroyed by laser but a normal pollen tube was still formed because (a) vegetative cell is not damaged (b) contents of killed generative cell stimulate pollen growth (c) laser beam stimulates growth of pollen tube (d) the region of emergence of pollen tube is not harmed.

Last Answer : (a) vegetative cell is not damaged

Description : Which of the following statements is not correct? (a) Pollen germination and pollen tube growth are regulated by chemical components of pollen interacting with those of the pistil. (b) ... Insects that consume pollen or nectar without bringing about pollination are called pollen/ nectar robbers.

Last Answer : (c) Pollen grains of many species can germinate on the stigma of a flower, but only one pollen tube of the same species grows into the style.

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

Last Answer : (b) synergids

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

Description : Which of the following nourishes a developing seed? a) pollen tube b) nectar c) endosperm d) zygote

Last Answer : ANSWER: C -- ENDOSPERM

Description : Factors which stimulate pollen tube germination. -Biology

Last Answer : answer:

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.

Description : Which one of the following statements is wrong?a)Pollen grains in some plants remain viable for monthsb)Intine is made up of cellulose and pectinc)When pollen is shed at two-celled state, double fertilization does not take placed)Vegetative cell is larger than generative cell

Last Answer : c)When pollen is shed at two-celled state, double fertilization does not take place

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

Last Answer : (c) synergid

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

Last Answer : c) Synergid

Description : Wind pollinated flowers are (a) small, brightly coloured, producing large number of pollen grains (b) small, producing large number of dry pollen grains (c) large producing abundant nectar and pollen (d) small, producing nectar and dry pollen

Last Answer : (b) small, producing large number of dry pollen grains

Description : Which of the following are the important floral rewards to the animal pollinators ? (a) Floral fragrance and calcium crystals (b) Protein pellicle and stigmatic exudates (c) Colour and large size of flower (d) Nectar and pollen grains

Last Answer : (d) Nectar and pollen grains

Description : Male gametes in angiosperms are formed by the division of (a) generative cell (b) vegetative cell (c) microspore mother cell (d) microspore.

Last Answer : (a) generative cell

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.

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

Last Answer : (c) porogamy

Description : What does the generative cell produce? -Biology

Last Answer : answer:

Description : What does the generative cell produce? -Biology

Last Answer : answer:

Description : When pollen grains are transferred to the stigma? -Biology

Last Answer : answer:

Description : When pollen is transferred from the anther to the stigma? -Biology

Last Answer : answer:

Description : When pollen grains are transferred to the stigma? -Biology

Last Answer : answer:

Description : When pollen is transferred from the anther to the stigma? -Biology

Last Answer : answer:

Description : What happens after pollen lands on the stigma of a flower?

Last Answer : Feel Free to Answer

Description : When pollen grains from an another falls on receptive stigma of the same flowers

Last Answer : Ans. Self pollination

Description : The floral part that receives pollen grains during pollination is - (1 ovary (2) style (3) stigma (4) ovules

Last Answer : (3) stigma Explanation: The stigma is the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower. The stigma receives pollen at pollination and it is on the stigma that the pollen grain germinates. The style connects the stigma to the ovary.

Description : The transfer of pollen grains from the an- ther to the stigma is called?

Last Answer : pollination

Description : When pollen of a flower is transferred to the stigma of another flower of the same plant, the pollination is referred to as (a) autogamy (b) geitonogamy (c) xenogamy (d) allogamy.

Last Answer : b) geitonogamy

Description : Anthesis is a phenomenon which refers to (a) reception of pollen by stigma (b) formation of pollen (c) development of anther (d) opening of flower bud.

Last Answer : (d) opening of flower bud.

Description : Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called (a) xenogamy (b) geitonogamy (c) karyogamy (d) autogamy.

Last Answer : (b) geitonogamy

Description : Which one of the following statements is correct? (a) Cleistogamous flowers are always autogamous. (b) Xenogamy occurs only by wind pollination. (c) Chasmogamous flowers do not open at all. (d) Geitonogamy involves the pollen and stigma of flowers of different plants.

Last Answer : (a) Cleistogamous flowers are always autogamous.

Description : What part of the flower contains the pollen? a) Anther b) Stigma c) Leaves d) Stem

Last Answer : a) Anther

Description : 10. “Cleistogamous flowers are invariably autogamous because” (a) These flowers do not open at all. (b) There is no chance of cross – pollen landing on the stigma. (c) These flowers have exposed anthers and stigma. (d) These flowers are wind pollinated.

Last Answer : (a) These flowers do not open at all.

Description : The transfer of pollen grains from anther to stigma is called; a) Fertilization b) pollination c) Microsporogenesis d) Polyembryony

Last Answer : Ans. b) Pollination

Description : Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called:a) Autogamyb) Xenogamyc) Geitonogamyd) Karyogamy

Last Answer : c) Geitonogamy

Description : The part of the flower that is adapted to catch pollen is the: a) stigma b) style c) anther d) ovule

Last Answer : ANSWER: A -- STIGMA

Description : The floral part that receives pollen-grains during pollination is (1) ovary (2) style (3) stigma (4) ovules

Last Answer : stigma

Description : Where is the division of generative cells ?

Last Answer : Gene cell division occurs in pollen grains.

Description : The second maturation division of the mammalian ovum occurs (a) shortly after ovulation before the ovum makes entry into the fallopian tube (b) until after the ovum has been penetrated by a sperm ... with that of the ovum (d) in the Graafian follicle following the first maturation division.

Last Answer : (b) until after the ovum has been penetrated by a sperm

Description : The process of arranging situations that stimulate and guide learning activities in order to bring desirable changes in the behaviour of people

Last Answer : Ans. Teaching

Description : The primary task of a teacher is (a) To teach the prescribed curriculum (b) To stimulate and guide student's learning (c) To provide diagnostic and remedial aid wherever desired (d) To promote habits of conformity to adult demands and expectations

Last Answer : (b) To stimulate and guide student's learning

Description : Which one of the following is a primary task of a teacher? Options: A) To teach the prescribed curriculum. B) To stimulate and guide students learning. C) To promote habits of conformity to adult demands and expectations D) To provide diagnostic and re-medial aid wherever desired.

Last Answer : B) To stimulate and guide students learning. 

Description : The primary task of the teacher is Options: A) To teach the prescribed curriculum B) To stimulate and guide student's learning C) To ensure that all students belong to socially acceptable peer groups D) To promote habits of conformity to adult demands and expectations

Last Answer : B) To stimulate and guide student's learning 

Description : Function of generative cell. -Biology

Last Answer : answer:

Description : Function of generative cell. -Biology

Last Answer : answer:

Description : Cancer cells interfere with cell functions in all the following ways except: a. they rob cells of their nutrients and induce cell starvation. b. they stimulate the immune system to produce destructive ... reduce the oxygen supply to cells. d. they overwhelm cells through sheer force of numbers.

Last Answer : b. they stimulate the immune system to produce destructive interferons.

Description : Besides giving out secretory vesicles, the Golgi apparatus is also concerned with the formation of (a) lysosomes (b) plastids (c) grana of chloroplasts (d) cell plates after cell division in plants.

Last Answer : (a) lysosomes

Description : Which one of the following statements does NOT apply to bacterial reproduction? a. A fission ring apparatus is present. b. Septum formation occurs. c. A spindle apparatus is used. d. Symmetrical cell division occurs.

Last Answer : c. A spindle apparatus is used.

Description : During the final stage of cell division, the mitotic apparatus disappears, the chromosomes become attenuated, the centrioles duplicate and split, the nuclear membrane becomes reconstituted and the nucleolus reappears. This ... as: a) prophase (pron: prO-phase) b) metaphase c) anaphase d) telophase

Last Answer : ANSWER: D -- Telophase

Description : In grasses what happens in microspore mother cell for the formation of mature pollen grains? (a) One meiotic and two mitotic divisions (b) One meiotic and one mitotic divisions (c) One meiotic division (d) One mitotic division

Last Answer : (b) One meiotic and one mitotic divisions