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TN 12th Tamil எல்லா உயிரும் தொழும் - செய்யுள்-புறநானுறு Sample Question Papers Study Material - QB365 Set A
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TN 12th Tamil அருமை உடைய செயல் -இலக்கணம் -படைப்பாக்க உத்திகள் Sample Question Papers Study Material - QB365 Set A
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Published on: 27/08/2022
QB365 provides a detailed and simple solution for every Possible Book Back Questions in Class 12 Biology Subject - Botany - Asexual and Sexual Reproduction in Plants, English Medium. It will help Students to get more practice questions, Students can Practice these question papers in addition to score best marks.
Download Tamil Nadu 12th Standard Biology question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Biology Test1.
In majority of plants pollen is liberated at _____.
1 celled stage
2 celled stage
3 celled stage
4 celled stage
2.
3.
4.
Consider the following statement(s)
i) In Protandrous flowers pistil matures earlier
ii) In Protogynous flowers pistil matures earlier
iii) Herkogamy is noticed in unisexual flowers
iv) Distyly is present in Primula
i and ii are correct
ii and iv are correct
ii and iii are correct
i and iv are correct
5.
6.
The scar left by funiculus in the seed is _______.
tegmen
radicle
epicotyl
hilum
7.
Transmitting tissue is found in ______.
Micropylar region of ovule
Pollen tube wall
Stylar region of gynoecium
Integument
8.
In Haplopappus gracilis, number of chromosomes in cells of nucellus is 4. What will be the chromosome number in Primary endosperm cell?
8
12
6
2
9.
Which of the following represent megagametophyte?
Ovule
Embryo sac
Nucellus
Endosperm
10.
Choose the correct statement(s) about tenuinucellate ovule.
Sporogenous cell is hypodermal
Ovules have fairly large nucellus
Sporogenous cell is epidermal
ovules have single layer of nucellus tissue
11.
Assertion(A) : Sporopollenin preserves pollen in fossil deposits
Reason (R): Sporopollenin is resistant to physical and biological decomposition
assertion is true; reason is false
assertion is false; reason is true
Both Assertion and reason are not true
Both Assertion and reason are true.
12.
Identify the incorrect pair
sporopollenin - exine of pollen grain
tapetum – nutritive tissue for developing microspores
Nucellus – nutritive tissue for developing embryo
obturator – directs the pollen tube into micropyle
13.
Arrange the layers of anther wall from locus to periphery
Epidermis, middle layers, tapetum, endothecium
Tapetum, middle layers, epidermis, endothecium
Endothecium, epidermis, middle layers, tapetum
Tapetum, middle layers endothecium epidermis
14.
Match the following
| I) | External fertilization | i) | pollen grain |
| II) | Androecium | ii) | anther wall |
| III) | Male gametophyte | iii) | algae |
| IV) | Primary parietal layer | iv) | stamens |
| I | II | III | IV |
| iv | i | ii | iii |
| I | II | III | IV |
| iii | iv | i | ii |
| I | II | III | IV |
| iii | iv | ii | i |
| I | II | III | IV |
| iii | i | iv | ii |
15.
First cell of male gametophyte in angiosperm is ______.
Microspore
megaspore
Nucleus
Primary Endosperm Nucleus
16.
Size of pollen grain in Myosotis ______.
10 micrometer
20 micrometer
200 micrometer
2000 micrometer
17.
Pollen tube was discovered by ______.
J.G. Kolreuter
G.B. Amici
E. Strasburger
E. Hanning
18.
Identify the correctly matched pair.
Tuber - Allium Cepa
Sucker - Pistia
Rhizome - Musa
Stolon - Zingiber
19.
An eminent Indian embryologist is ______.
S.R. Kashyap
P. Maheswari
M.S. Swaminathan
K.C. Mehta
20.
Choose the correct statement from the following
Gametes are involved in asexual reproduction
Bacteria reproduce asexually by budding
Conidia formation is a method of sexual reproduction
Yeast reproduce by budding
1.
(b)
2 celled stage
2.
(d)
3.
(a)
4.
(b)
ii and iv are correct
5.
(b)
6.
(d)
hilum
7.
(c)
Stylar region of gynoecium
8.
(c)
6
9.
(b)
Embryo sac
10.
(a)
Sporogenous cell is hypodermal
11.
(d)
Both Assertion and reason are true.
12.
(c)
Nucellus – nutritive tissue for developing embryo
13.
(d)
Tapetum, middle layers endothecium epidermis
14.
(b)
| I | II | III | IV |
| iii | iv | i | ii |
15.
(a)
Microspore
16.
(a)
10 micrometer
17.
(b)
G.B. Amici
18.
(c)
Rhizome - Musa
19.
(b)
P. Maheswari
20.
(d)
Yeast reproduce by budding
12th Standard Syllabus & Materials
12th Standard
TN 12th Tamil அருமை உடைய செயல் - செய்யுள்-தேவாரம் Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Tamil அருமை உடைய செயல் - செய்யுள்-பெருமாள் திருமொழி Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Tamil அருமை உடைய செயல் - செய்யுள்-தெய்வமணிமாலை * Sample Question Papers Study Material - QB365 Set A
NEW12th Standard
TN 12th Tamil நாகரிகம், தொழில், வணிகம், ஆளுமை - உரைநடை உலகம் -திரைமொழி Sample Question Papers Study Material - QB365 Set A
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