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Sexual Reproduction In Flowering Plants

554 Questions Start Allen Test
All Exams Allen Errorless
Q501 Errorless Megasporogenesis MCQ
Choose the right option in which all the alphabets A, B, C, D and E are correctly identified
A.
A-Antipodal cells, B-Secondary nuclei, C-Chalaza, D-Stigma, E-Style
B.
A-Antipodal cells, B-Secondary nuclei, C-Stigma, D-Chalaza, E-Style
C.
A-Antipodal cells, B-Secondary nuclei, C-Style, D-Stigma, E-Chalaza
D.
A-Antipodal cells, B-Secondary nuclei, C-Stigma, D-Style, E-Chalaza
Q502 Errorless Megasporogenesis MCQ
The functional megaspore undergoes
A.
2 meiotic divisions to form mature embryo sac
B.
3 mitotic divisions to form mature embryo sac
C.
2 mitotic divisions to form mature embryo sac
D.
3 meiotic divisions to form mature embryo sac
Q503 Errorless Megasporogenesis MCQ
Examine the figure given below showing entry of pollen tube into embryo sac. Identify A, B, C, D, E and F respectively
A.
A-Obturator, B-Synergid, C-Polar nuclei, D-Male gametes, E-Vegetative nucleus, F-Central cell
B.
A-Egg apparatus, B-Synergid, C-Polar nuclei, D-Male gametes, E-Vegetative nucleus, F-Central cell
C.
A-Filiform apparatus, B-Synergid, C-Polar nuclei, D-Vegetative nucleus, E-Male gametes, F-Central cell
D.
A-Filiform apparatus, B-Synergid, C-Polar nuclei, D-Male gametes, E-Vegetative nucleus, F-Central cell
Q504 Errorless Megasporogenesis MCQ
The given figure shows megasporogenesis and development of typical female gametophyte in angiosperms. Which of the following options is right in which all divisions (D1 to D5) and structure (S) are correctly identified
A.
Dā‚-Meiosis I, Dā‚‚-Meiosis II, Dā‚ƒ-Mitosis, Dā‚„-Mitosis, Dā‚…-Mitosis, S-Embryo
B.
Dā‚-Meiosis I, Dā‚‚-Meiosis II, Dā‚ƒ-Mitosis, Dā‚„-Mitosis, Dā‚…-Mitosis, S-Microgametophyte
C.
Dā‚-Meiosis I, Dā‚‚-Meiosis II, Dā‚ƒ-Mitosis, Dā‚„-Mitosis, Dā‚…-Mitosis, S-Embryo sac
D.
Dā‚-Mitosis, Dā‚‚-Meiosis, Dā‚ƒ-Mitosis, Dā‚„-Mitosis, Dā‚…-Mitosis, S-Embryo sac
Q505 Errorless Megasporogenesis MCQ
In an embryo sac of a typical angiosperm, there are
A.
Egg, synergids and antipodals
B.
Egg, synergids, polar nuclei and antipodals
C.
Egg, synergids, central cell and polar nuclei
D.
Egg, synergids and secondary cell
Q506 Errorless Megasporogenesis MCQ
A diagrammatic view of a typical anatropous ovule is given below. In which of the following option all five parts are correctly identified [NCERT Pg. No. 9]
A.
A-Funicle, B-Micropyle, C-Female gametophyte, D-Embryo sac, E-Chalaza
B.
A-Placenta, B-Micropyle, C-Egg, D-Embryo sac, E-Chalaza
C.
A-Raphe, B-Micropyle, C-Egg, D-Embryo sac, E-Chalaza
D.
A-Funicle, B-Micropyle, C-Nucellus, D-Embryo sac, E-Chalaza
Q507 Errorless POLLINATION MCQ
Pollination by water is seen in
A.
Nelumbium
B.
Vallisneria
C.
Eichornia
D.
Nymphaea
Q508 Errorless POLLINATION MCQ
The diagram given below shows the plant of Commelina with two type of flowers (F1 and F2). The flowers are
A.
F1 - Chasmogamous, F2 - Cleistogamous
B.
F1 - Cryptogamous, F2 - Ovulate
C.
F1 - Neutral, F2 - Staminate
D.
F1 - Cleistogamous, F2 - Chasmogamous
Q509 Errorless POLLINATION Numerical
Which of the following type of gynoecium is associated by wind pollination
Q510 Errorless POLLINATION MCQ
The given diagram is showing hydrophily of [NCERT Pg. No.14]
A.
Vallisneria
B.
Hydrilla
C.
Zostera
D.
Lotus
Q511 Errorless POLLINATION MCQ
The below figure shows 2 plants of the same species. Identify the types of pollination indicated as P1, P2 and P3
A.
Autogamy GeitonogamyXenogamy
B.
Geitonogamy Allogamy Autogamy
C.
Allogamy ChasmogamyCleistogamy
D.
Autogamy Xenogamy Geitonogamy
Q512 Errorless FERTILIZATION MCQ
Micropyle of seed facilitate in the entry of [Odisha JEE2009]
A.
Air
B.
Pollen grains
C.
CO{2
D.
Water
Q513 Errorless FERTILIZATION MCQ
The given figure is associated to double fertilization. A, B, C, D, E, F and G are identified respectively
A.
Egg, Polar nuclei, Male gamete, Male gamete, Zygote and Primary endosperm nucleus (PEN)
B.
Egg, Male gamete, Male gamete, Polar nuclei, Primary endosperm nucleus (PEN) and Zygote
C.
Egg, Male gamete, Polar nuclei, Male gamete, Primary endosperm nucleus (PEN) and Zygote
D.
Egg, Polar nuclei, Male gamete, Male gamete, Primary endosperm nucleus (PEN) and Zygote
Q514 Errorless Embryo and endosperm MCQ
The given figure are related to castor seeds. Identify A to D respectively
A.
Seed coat, endosperm cotyledon and caruncle
B.
Seed coat, cotyledon, endosperm and caruncle
C.
Seed coat, endosperm, caruncle and cotyledon
D.
Endosperm, seed coat, cotyledon and caruncle
Q515 Errorless Embryo and endosperm Numerical
Considering the genetic basis of self- incompatibility which of the following options is correct. Male plant is $\mathsf { S } _ { 1 } \mathsf { S } _ { 3 }$ and female plant is $\mathsf { S } _ { 1 } \mathsf { S } _ { 2 }$ [NCERT]
(a)

(c)

(b)

(d)
Q516 Errorless Embryo and endosperm MCQ
Study the given figure of a typical dicot embryo. Select the right option in which all the labelled parts as A, B and C are correctly matched with their respective functions
A.
A-Radicle, root system formation, B-Plumule, shoot system formation, C-Endosperm, food storage
B.
A-Radicle, root system formation, B-Plumule, shoot system formation, C-Cotyledon, food storage
C.
A-Plumule, shoot system formation, B-Radicle, root system formation, C-Cotyledon, food storage
D.
A-Plumule, shoot system formation, B-Radicle, root system formation, C-Hypophysis, formation of radicle
Q517 Errorless Embryo and endosperm MCQ
The given figure refers the self - incompatibility. The genotypes of embryo and endosperms are [NCERT]
A.
$\mathsf { S } _ { 1 } \mathsf { S } _ { 3 } , \mathsf { S } _ { 3 } \mathsf { S } _ { 4 }$ $\mathsf { S } _ { 1 } \mathsf { S } _ { 1 } \mathsf { S } _ { 3 } , \mathsf { S } _ { 4 } \mathsf { S } _ { 4 } \mathsf { S } _ { 3 }$
B.
$\mathsf { S } _ { 1 } \mathsf { S } _ { 1 }$ $\mathsf { S } _ { 1 } \mathsf { S } _ { 3 } \mathsf { S } _ { 4 }$
C.
$\mathsf { S } _ { 1 } \mathsf { S } _ { 3 } , \mathsf { S } _ { 3 } \mathsf { S } _ { 4 }$ $\mathsf { S } _ { 3 } \mathsf { S } _ { 4 } \mathsf { S } _ { 4 }$
D.
$\mathsf { S } _ { 4 } \mathsf { S } _ { 4 }$ $\mathsf { S } _ { 3 } \mathsf { S } _ { 4 } \mathsf { S } _ { 4 } , \mathsf { S } _ { 1 } \mathsf { S } _ { 1 } \mathsf { S } _ { 3 }$
Q518 Errorless Embryo and endosperm MCQ
In the following figure
A.
Ruminate endosperm
B.
Nuclear endosperm
C.
Helobial endosperm
D.
Cellular endosperm
Q519 Errorless NCERT(Exemplar Questions) MCQ
Among the terms listed below, those that of are not technically correct names for a floral whorl are[NCERT]
(i) Androecium
(ii) Carpel
(iii) Corolla
(iv) Sepal
A.
i and iv
B.
iii and iv
C.
ii and iv
D.
i and ii
Q520 Errorless NCERT(Exemplar Questions) MCQ
Embryo sac is to ovule as is to an anther
A.
Stamen
B.
Filament
C.
Pollen grain
D.
Androecium
Q521 Errorless NCERT(Exemplar Questions) MCQ
In a typical complete, bisexual and hypogynous flower the arrangement of floral whorls on the thalamus from the outermost to the innermost is [NCERT]
A.
Calyx, corolla, androecium and gynoecium
B.
Calyx, corolla, gynoecium and androecium
C.
Gynoecium, androecium, corolla and calyx
D.
Androecium, gynoecium, corolla and calyx
Q522 Errorless NCERT(Exemplar Questions) MCQ
A dicotyledonous plant bears flowers but never produces fruits and seeds. The most probable cause for the above situation is [NCERT Pg. No. 15]
A.
Plant is dioecious and bears only pistillate flowers
B.
Plant is dioecious and bears both pistillate and staminate flowers
1-1Dl--+:-
C.
Plant is monoecious
D.
Plant is dioecious and bears only staminate flowers
Q523 Errorless NCERT(Exemplar Questions) MCQ
The outermost and innermost wall layers of microsporangium in an anther are respectively
A.
Endothecium and tapetum
B.
Epidermis and endodermis
C.
Epidermis and middle layer
D.
Epidermis and tapetum
Q524 Errorless NCERT(Exemplar Questions) MCQ
In a flower, if the megaspore mother cell forms megaspores without undergoing meiosis and if one of the megaspores develops into an embryo sac, its nuclei would be [NCERT]
A.
Haploid
B.
Diploid
C.
A few haploid and a few diploid
D.
With varying ploidy
Q525 Errorless NCERT(Exemplar Questions) MCQ
From among the sets of term given below, identify those that are associated with the gynoecium
A.
Stigma, ovule, embryo sac, placenta
B.
Thalamus, pistil, style, ovule
C.
Ovule, ovary, embryo sac, tapetum
D.
Ovule, stamen, ovary, embryo sac