Sexual Reproduction in Flowering Plants
MCQ Biology Chapter 1 NCERT For NEET
1 |
Another is? |
A |
Bilobed, dithecous |
B |
Trilobed, dithecous |
C |
Tertralobed, dithecous |
D |
None of the above |
Answer |
Bilobed, dithecous |
2 |
The anther is a four-sided structure consisting of four …….
Located at corner? |
A |
Microsporangia |
B |
Megasporangia |
C |
Sporogenous tissue |
D |
Stamen |
Answer |
Microsporangia |
3 |
In transverse section, microsporangium appears near …. in
outline? |
A |
Circular |
B |
Amoeboid |
C |
Irregular |
D |
None |
Answer |
Circular |
4 |
Microsporangium surrounded by four wall layers which include? |
A |
Epidermis, middle layers |
B |
Epidermis, endothecium |
C |
tapetum |
D |
All of these |
Answer |
All of these |
5 |
Who nourishes the developing pollen grains? |
A |
Epidermis |
B |
Tapetum |
C |
Endothecium |
D |
Middle layers |
Answer |
Tapetum |
6 |
Cells of tapetum? |
A |
Have one nucleus |
B |
Binucleated |
C |
More than one nucleus |
D |
Enucleated |
Answer |
More than one nucleus |
7 |
The process of formation of microspores from a pollen mother cell
through meiosis is called? |
A |
Megasporogenesis |
B |
Microsporogenesis |
C |
Both A and B |
D |
None of the above |
Answer |
Microsporogenesis |
8 |
Who represent the male gametophytes? |
A |
Pollen grain |
B |
Stamens |
C |
Anther |
D |
Both B and C. |
Answer |
Pollen grain. |
9 |
Pollen grain made up of two wall layer outer is …. And inner
is….? |
A |
Intine, exine |
B |
Exine, intine |
C |
Only intine |
D |
Only exine. |
Answer |
Exine, intine. |
10 |
Exine is made up of? |
A |
Sporopollenin |
B |
cellulose |
C |
Pectin |
D |
Cellulose and pectin |
Answer |
Sporopollenin |
11 |
Intine is made up of? |
A |
Sporopollenin |
B |
Cellulose |
C |
Pectin |
D |
Cellulose and pectin |
Answer |
Cellulose and pectin |
12 |
In over 60% of angiosperm, pollen grain is shed at? |
A |
1-celled stage |
B |
2-celled stage |
C |
3-celled stage |
D |
4-celled stage |
Answer |
2-celled stage |
13 |
In some cereals pollen grain lose viability within? |
A |
60min |
B |
30min |
C |
90min |
D |
Month |
Answer |
30min |
14 |
Pollen grain of a large number of species for years are stored in
liquid nitrogen at? |
A |
-196 |
B |
-200 |
C |
-0 |
D |
-180 |
Answer |
-196 |
15 |
Gynoecium consists of? |
A |
Stamen |
B |
Pistil |
C |
Placenta |
D |
Ovary |
Answer |
Pistil |
16 |
Basal bulged part of pistil is the? |
A |
Stigma |
B |
Ovary |
C |
Style |
D |
Thalamus |
Answer |
Ovary |
17 |
The number of ovules in an ovary may be one in? |
A |
Papaya |
B |
Orchids |
C |
Mango |
D |
Watermelon |
Answer |
Mango |
18 |
The body of ovules fuses with funicle in the region called? |
A |
Hilum |
B |
Micropyle |
C |
Chalaza |
D |
Nucellus |
Answer |
Hilum |
19 |
Integument encircle the nucellus except at? |
A |
Chalaza |
B |
Funicle |
C |
Hilum |
D |
Micropyle |
Answer |
Micropyle |
20 |
The method of embryo sac formation from a single megaspore is
termed as? |
A |
Bisporic |
B |
Tetrasporic |
C |
Monosporic |
D |
None of the above |
Answer |
Monosporic |
21 |
In embryo sac the cell are group together at the micropylar end
and constitute the? |
A |
Antipodal |
B |
Egg apparatus |
C |
Synergids |
D |
Egg cell |
Answer |
Egg apparatus |
22 |
Egg apparatus consists of?
|
A |
One egg cell and two synergid |
B |
Two egg cell and two synergid |
C |
One egg cell and one synergid |
D |
Two egg cell and one synergid |
Answer |
One egg cell and two synergid |
23 |
Who guide the pollen tubes enter into synergid? |
A |
Chalaza |
B |
Egg cell |
C |
Micropyle |
D |
Filiform apparatus |
Answer |
Filiform apparatus |
24 |
A typical embryo sac, at maturity, though? |
A |
8-celled 7 nucleated |
B |
7-celled 8-nucleated |
C |
7-celled 7-nucleated |
D |
8-celled 8-nucleated |
Answer |
7-celled 8-nucleated |
25 |
Transfer of pollen grain shed from the anther to stigma of pistil
is termed? |
A |
Fertilisation |
B |
Pollination |
C |
Triple fusion |
D |
None |
Answer |
Pollination |
26 |
Pollination is achieved within the same flower? |
A |
Autogamy |
B |
Cleistogamous |
C |
Chasmogamous |
D |
Both A and B |
Answer |
Both A and B |
27 |
Which pollination is functionally cross pollination ang
genetically it is similar to autogamy? |
A |
Xenogamy |
B |
Pollination in cleistogamous flower |
C |
Geitonogamy |
D |
All of these |
Answer |
Geitonogamy |
28 |
Pollination by wind is called? |
A |
Hydrophily |
B |
Entomophily |
C |
Anemophily |
D |
Ornithophily |
Answer |
Anemophily |
29 |
Light and non-sticky pollen grain are used in pollination by? |
A |
water |
B |
Insect |
C |
Birds |
D |
Wind |
Answer |
Wind |
30 |
…… pollinated flower often have a single ovule in each ovary? |
A |
Water |
B |
Wind |
C |
Bats |
D |
Insect |
Answer |
Wind |
31 |
How many genera of monocot plant are limited to hydrophily? |
A |
80 |
B |
40 |
C |
100 |
D |
30 |
Answer |
30 |
32 |
Water pollinated plants are? |
A |
Vallisneria |
B |
Hydrilla |
C |
Both A and B |
D |
Water hyacinth |
Answer |
Both A and B |
33 |
In aquatic plant like water lily and water hyacinth pollination
is by? |
A |
Water |
B |
Insect |
C |
Either insect or wind |
D |
Wind |
Answer |
Either insect or wind |
34 |
Majority of ……. Pollinated flower is large, colorful, fragrant
and rich in nectar? |
A |
Birds |
B |
Insect |
C |
Bats |
D |
Bees |
Answer |
Insect |
35 |
Monoecious plant prevents? |
A |
Geitonogamy |
B |
Autogamy |
C |
Both of these |
D |
None of these |
Answer |
Autogamy |
36 |
Who has ability to recognize the pollen |
A |
Ovary |
B |
Filament |
C |
Flower |
D |
Pistil |
Answer |
pistil |
36 |
No need for emasculation in flower? |
A |
Unisexual |
B |
Bisexual |
C |
Both of these |
D |
None |
Answer |
Unisexual |
37 |
Primary endospermic nucleus (PEN) is? |
A |
Diploid |
B |
Haploid |
C |
Triploid |
D |
Polyploid |
Answer |
Triploid |
38 |
Double fertilization include? |
A |
Syngamy |
B |
Triple fusion |
C |
Both A and B |
D |
None |
Answer |
Both A and B |
39 |
The central cell after triple fusion become the ……. And develops
into the ….? |
A |
Primary endosperm cell and endosperm |
B |
Endosperm and primary endosperm cell |
C |
Endosperm and embryo |
D |
Embryo and endosperm |
Answer |
Primary endosperm cell and endosperm |
40 |
In gymnosperm ploidy of PEN is? |
A |
2n |
B |
3n |
C |
n |
D |
4n |
Answer |
2n |
41 |
In ‘double fertilization’ in angiosperm: 1: syngamy results in the formation of zygote. 2: triple fusion results in the formation of primary endosperm
nucleus. |
A |
Both 1 and 2 is correct |
B |
Only 1 is correct |
C |
Only 2 is correct |
D |
Both 1 and 2 are incorrect |
Answer |
Both 1 and 2 are correct |
42 |
Triple fusion in angiosperm is the? |
A |
Fusion of second sperm with two antipodal cells |
B |
Fusion of second sperm with two synergid cells |
C |
Fusion of second sperm with two polar nuclei |
D |
All of these |
Answer |
Fusion of second sperm with two polar nuclei |
43 |
Assertion: primary endosperm nucleus is triploid. Reason: as this involves the fusion of three haploid nuclei. |
A |
both (A) and (R) is true and (R) is correct explanation of (A). |
B |
Both (A) and (R) are true but (R) is not the correct explanation
of (A). |
C |
(A) is true, but (R) is false
|
D |
(A)is false, but (R) is true |
Answer |
both (A) and (R) is true and (R) is correct explanation of (A). |
44 |
Assertion: most zygotes divide only after certain amount of
endosperm is formed. Reason: this is an adaptation to provide assured nutrition to the
developing embryo. |
A |
(A) and (R) is true but (R) is not correct explanation of (A) |
B |
(A)is the true (R) is false |
C |
(A)is false (R) is true |
D |
(A) and (R) is true and (R) is correct explanation of (A) |
Answer |
(A) and (R) is true and (R) is correct explanation of (A) |
45 |
Correct stages of embryogeny in dicotyledonous embryo: |
A |
Proembryo, heart-shaped, globular and mature. |
B |
heart-shaped, Proembryo, mature and globular. |
C |
Proembryo, globular, heart-shaped and mature. |
D |
Mature, globular, heart-shaped and proembryo. |
Answer |
Proembryo, globular, heart-shaped and mature. |
46 |
The portion of embryonal axis above the level of cotyledons is
the (1) which terminates with the (2). |
A |
(1)epicotyle (2) plumule |
B |
(1)plumule (2) epicotyle |
C |
(1)hypocotyle (2) radicle |
D |
(1)radicle (2) hypocotyle |
Answer |
(1)epicotyle (2) plumule |
47 |
In the grass family the cotyledone is called ….? |
A |
Scutellum |
B |
Coleoptile |
C |
Coleorhiza |
D |
Epiblast |
Answer |
Scutellum |
48 |
In angiosperm, final product of sexual reproduction? |
A |
Fruit |
B |
Seed |
C |
Stem |
D |
Perisperm |
Answer |
Seed |
49 |
Example of non-albuminous seed is? |
A |
Pea |
B |
Wheat |
C |
Barley |
D |
Castor |
Answer |
Pea |
50 |
Example of albuminous seed are? |
A |
wheat |
B |
Maize |
C |
Castor |
D |
All of these |
Answer |
All of these |
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