CHAPTER 1 ASEXUAL AND SEXUAL REPRODUCTION IN PLANTS - CLASS 12 BIOLOGY BOTANY - 1 MARK QUESTIONS - ONLINE TEST

ப்ளஸ் டூ படிக்கும் மாணவர்களுக்கு இந்தத் தேர்வு பயனுள்ளதாக இருக்கும். இந்த யூ ட்யூப் தளத்தில் வரும் ஆடியோவை ப்ளே செய்து மீண்டும் மீண்டும் கேளுங்கள். ஆடியோவை கேட்கும் பொழுதே கீழே உள்ள கேள்வி பதில்களை SCROLL செய்து உற்று நோக்குங்கள். பிறகு கேள்விகளில் உள்ள சரியான விடையை தேர்ந்தெடுத்து கடைசியாக SUBMIT செய்யுங்கள். நீங்கள் எடுத்த மதிப்பெண் வரும் அந்த மதிப்பெண்ணை கீழே உள்ள கமெண்ட் பாக்ஸ் இல் பதிவு செய்யுங்கள். மதிப்பெண் குறைந்தால் மீண்டும் ஒருமுறை முயற்சி செய்யுங்கள்... வாழ்த்துக்கள் மாணவர்களே...அன்புடன் - K.K.D.

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1.

Choose the correct statement from the following

a) Gametes are involved in asexual reproduction

b) Bacteria reproduce asexually by budding

c) Conidia formation is a method of sexual reproduction

d) Yeast reproduce by budding

2.

An eminent Indian embryologist is

a) S.R.Kashyap

b) P.Maheswari

c) M.S. Swaminathan

d) K.C.Mehta

3.

Identify the correctly matched pair

a) Tuber - Allium cepa

b) Sucker - Pistia

c) Rhizome - Musa

d) Stolon - Zingiber

4.

Pollen tube was discovered by

a) J.G.Kolreuter

b) G.B.Amici

c) E.Strasburger

d) E.Hanning

5.

Size of pollen grain in Myosotis

a) 10 micrometer

b) 20 micrometer

c) 200 micrometer

d) 2000 micrometer

6.

First cell of male gametophyte in angiosperm is

a) Microspore

b) megaspore

c) Nucleus

d) Primary Endosperm Nucleus

7.

Match the following :
COLUMN 1 : 🔽I) External fertilization, 🔽II) Androecium , 🔽III) Male gametophyte, 🔽IV) Primary parietal layer
COLUMN 2 : 🔼 i) pollen grain, 🔼ii)anther wall, 🔼iii)algae, 🔼iv)stamens

a) [ I-iv ], [ II-i ], [ III-ii ], [ IV-iii ]

b) [ I-iii ], [ II-iv ], [ III-i ], [ IV-ii ]

c) [ I-iii ], [ II-iv ], [ III-ii ], [ IV-i ]

d) [ I-iii ], [ II-i ], [ III-iv ], [ IV-ii ]

8.

Arrange the layers of anther wall from locus to periphery

a) Epidermis,middle layers, tapetum, endothecium

b) Tapetum, middle layers, epidermis, endothecium

c) Endothecium, epidermis, middle layers, tapetum

d) Tapetum, middle layers endothecium epidermis

9.

Identify the incorrect pair

a) sporopollenin - exine of pollen grain

b) tapetum – nutritive tissue for developing microspores

c) Nucellus – nutritive tissue for developing embryo

d) obturator – directs the pollen tube into micropyle

10.

🔽 Assertion : Sporopollenin preserves pollen in fossil deposits
🔽 Reason : Sporopollenin is resistant to physical and biological decomposition

a) assertion is true; reason is false

b) assertion is false; reason is true

c) Both Assertion and reason are not true

d) Both Assertion and reason are true.

11.

Choose the correct statement(s) about tenuinucellate ovule

a) Sporogenous cell is hypodermal

b) Ovules have fairly large nucellus

c) sporogenous cell is epidermal

d) ovules have single layer of nucellus tissue

12.

Which of the following represent megagametophyte

a) Ovule

b) Embryo sac

c) Nucellus

d) Endosperm

13.

In Haplopappus gracilis, number of chromosomes in cells of nucellus is 4. What will be the chromosome number in Primary endosperm cell?

a) 8

b) 12

c) 6

d) 2

14.

Transmitting tissue is found in

a) Micropylar region of ovule

b) Pollen tube wall

c) Stylar region of gynoecium

d) Integument

15.

The scar left by funiculus in the seed is

a) tegmen

b) radicle

c) epicotyl

d) hilum

16.

A Plant called X possesses small flower with reduced perianth and versatile anther. The probable agent for pollination would be

a) water

b) air

c) butterflies

d) beetles

17.

🔽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

a) i and ii are correct

b) ii and iv are correct

c) ii and iii are correct

d) i and iv are correct

18.

Coelorhiza is found in

a) Paddy

b) Bean

c) Pea

d) Tridax

19.

Parthenocarpic fruits lack

a) Endocarp

b) Epicarp

c) Mesocarp

d) seed

20.

In majority of plants pollen is liberated at

a) 1 celled stage

b) 2 celled stage

c) 3 celled stage

d) 4 celled stage

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