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.

1 Answer

Answer :

(c) reduction division occurs in the megaspore
mother cells

Related questions

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

Last Answer : (c) 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.

Description : Which of the following pair have haploid structures? (a) Nucellus and antipodal cells (b) Antipodal cells and egg cell (c) Antipodal cells and megaspore mother cell (d) Nucellus and primary endosperm nucleus

Last Answer : (b) Antipodal cells and egg cell

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

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.

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

Last Answer : a) embryo 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

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))

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

Last Answer : Ans : a) Microspore

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

Last Answer : (b) synergids

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

Last Answer : Ans: c)Embryo sac

Description : Mention the component cells of an embryo sac of angiosperms -Biology

Last Answer : answer:

Description : Mention the component cells of an embryo sac of angiosperms -Biology

Last Answer : answer:

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

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.

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

Last Answer : Ans. ((d))

Description : Embryo sac represents (a) megaspore (b) megagametophyte (c) megasporophyll (d) megagamete.

Last Answer : b) megagametophyte

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

Last Answer : (2) Embryo sac

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

Last Answer : (c) synergid

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 : Which is the most common type of embryo sac in angiosperms ? (a) Tetrasporic with one mitotic stage of divisions (b) Monosporic with three sequential mitotic divisions (c) Monosporic with two sequential mitotic divisions (d) Bisporic with two sequential mitotic divisions

Last Answer : (b) Monosporic with three sequential mitotic divisions

Description : Megaspores are produced from the megaspore mother cells after (a) mitotic division (b) formation of thick wall (c) differentiation (d) meiotic division.

Last Answer : d) meiotic division.

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

Last Answer : answer:

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

Last Answer : answer:

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.

Description : Apomictic embryos in Citrus arise from (a) synergids (b) maternal sporophytic tissue in ovule (c) antipodal cells (d) diploid egg.

Last Answer : (b) maternal sporophytic tissue in ovule

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 : 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))

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

Last Answer : c) Synergid

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

Last Answer : (c) ovule

Description : In polygonum type of embryo sac, the cells are

Last Answer : In polygonum type of embryo sac, the cells are A. Haploid B. Diploid C. Both A and B D. Poiyploid

Description : n Pinus/gymnosperms, the haploid structure are (a) megaspore, endosperm and embryo (b) megaspore, pollen grain and endosperm (c) megaspore, integument and root (d) pollen grain, leaf and root.

Last Answer : (b) megaspore, pollen grain and endosperm

Description : What is a megaspore mother cell? -Biology

Last Answer : answer:

Description : The ovule of an angiosperm is technically equivalent to (a) megasporangium (b) megasporophyll (c) megaspore mother cell (d) megaspore.

Last Answer : (a) megasporangium

Description : 4.A mature embryosac in angiosperm is formed from a megaspore mother cell by ------- cell divisions. (a) one mitosis and two meiosis, b)two mitosis and one meiosis, c)three mitosis and two meiosis d)three mitosis and one meiosis)

Last Answer : d)three mitosis and one meiosis)

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

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.

Description : Benign migratory glossitis or Geographic Tongue, manifests itself in the oral cavity as, A. Irregularly outlined areas of hyperkeratosis of the dorsal surface of the tongue B. Furrows outlined the ... (fissures) radiating from a central fissure G. Irregular area in the midline of the tongue

Last Answer : C. Loss (atrophy) of filiform papillae in multiple irregularly outlined areas

Description : Explain embryo development in angiosperms. -Biology

Last Answer : answer:

Description : Top-shaped multiciliate male gametes and the mature seed which bears only one embryo with two cotyledons, are characterised features of (a) cycads (b) conifers (c) polypetalous angiosperms (d) gamopetalous angiosperms.

Last Answer : (a) cycads

Description : Select one of the following pairs of important features distinguishing Gnetum from Cycas and Pinus and showing affinities with angiosperms. (a) Perianth and two integuments (b) Embryo development and ... of resin duct and leaf venation (d) Presence of vessel elements and absence of archegonia

Last Answer : (d) Presence of vessel elements and absence of archegonia

Description : What is embryo sac in plants? -Biology

Last Answer : answer:

Description : What is the function of embryo sac in plant? -Biology

Last Answer : answer:

Description : what is the function of the polar nucleus in an embryo sac? -Biology

Last Answer : answer:

Description : Nutrition of embryo sac? -Biology

Last Answer : answer:

Description : Why is the embryo sac called the female gametophyte? -Biology

Last Answer : answer:

Description : Structure of the embryo sac? -Biology

Last Answer : answer:

Description : Difference between ovule and embryo sac. -Biology

Last Answer : answer:

Description : Difference between ovule and embryo sac? -Biology

Last Answer : answer: