Flagellated male gametes are present in all the three of which one of the following sets? (a) Zygnema, Saprolegnia and Hydrilla (b) Fucus, Marsilea and Calotropis (c) Riccia, Dryopteris and Cycas (d) Anthoceros, Funaria and Spirogyra

Flagellated male gametes are present in all the three
of which one of the following sets?
(a) Zygnema, Saprolegnia and Hydrilla
(b) Fucus, Marsilea and Calotropis
(c) Riccia, Dryopteris and Cycas
(d) Anthoceros, Funaria and Spirogyra
by

1 Answer

Answer :

(c) Riccia, Dryopteris and Cycas
by

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Description : Where are Male gametes are produced?

Last Answer : Need answer

What are the reproductive organs that produce gametes in both male and female?

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The independent structure developed in pteridophytes which produces male and female gametes is

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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.

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.

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Last Answer : (d) syngamy and triple fusion.

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.

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

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Last Answer : (a) generative cell

What is the function of germ pore? (a) Emergence of radicle (b) Absorption of water for seed germination (c) Initiation of pollen tube (d) Release of male gametes

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Last Answer : (c) Initiation of pollen tube

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)

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

Erythroblastosis fetalis is caused when fertilisation takes place between gametes of (a) Rh– female and Rh+ male (b) Rh+ female and Rh– male (c) Rh+ female and Rh+ male (d) Rh– female and Rh– male.

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Last Answer : (a) Rh– female and Rh+ male

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.

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Last Answer : (a) cycads

In bryophytes and pteridophytes, transport of male gametes requires (a) birds (b) water (c) wind (d) insects

Description : In bryophytes and pteridophytes, transport of male gametes requires (a) birds (b) water (c) wind (d) insects

Last Answer : (b) water

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

Which of the following is not a characteristic of coniferales........ a)pycnoxylic wood b)motile male gametes c)presence of resin canal d) fertilization siphonogamous

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Last Answer : b)motile male gametes

Which one of the following plants are used as green manure in crop fields and in sandy soils? (a) Crotalaria juncea and Alhagi camelorum (b) Calotropis procera and Phyllanthus niruri (c) Saccharum munja and Lantana camara (d) Dichanthium annulatum and Azolla nilotica

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Last Answer : (a) Crotalaria juncea and Alhagi camelorum

Keel is characteristic of the flowers of (a) gulmohur (b) Cassia (c) Calotropis (d) bean.

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Last Answer : (d) bean.

Among flowers of Calotropis, tulip, Sesbania, Asparagus, Colchicum, sweet pea, Petunia, Indigofera, mustard, soybean, tobacco and groundnut, how many plants have corolla with valvate aestivation? (a) Six (b) Seven (c) Eight (d) Five

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Last Answer : (b) Seven

Archegoniophore is present in (a) Marchantia (b) Chara (c) Adiantum (d) Funaria.

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Last Answer : a) Marchantia