WorksheetsCLASS 12_BOTANY_CHAPTER - 1_1 Marks_Tr.Venkat_GHSS KALAPATTI CBE
Total questions: 20
Worksheet time: 11mins
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
An eminent Indian embryologist is
S. R. Kashyap
P. Maheshwari
M. S. Swaminathan
K. C. Mehta
Identify the correctly matched pair
Tuber - Allium cepa
Sucker - Pistia
Rhizome - Musa
Stolon - Zingiber
Pollen tube was discovered by
J. G. Kolreuter
G. B. Amici
E. Strasburger
E. Hanning
Size of pollen grain in Myosotis
10 micrometer
20 micrometer
200 micrometer
2000 micrometer
First cell of male gametophyte in angiosperm is
Microspore
megaspore
Nucleus
Primary Endosperm Nucleus
Match the following:
1) External fertilization - i) pollen grain
2) Androecium - ii) anther wall
3) Male gametophyte - iii) algae
4) Primary parietal layer - iv) stamens
1-iv; 2-i; 3-ii; 4-iii
1-iii; 2-iv; 3-i; 4-ii
1-iii; 2-iv; 3-ii, 4-i
1-iii; 2-i; 3-iv; 4-ii
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
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
Assertion : Sporopollenin preserves pollen in fossil deposits
Reason : 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.
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
Which of the following represent megagametophyte
Ovule
Embryo sac
Nucellus
Endosperm
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
Transmitting tissue is found in
Micropylar region of ovule
Pollen tube wall
Stylar region of gynoecium
Integument
The scar left by funiculus in the seed is
tegmen
radicle
epicotyl
hilum
A Plant called X possesses small flower with reduced perianth and versatile anther. The probable agent for pollination would be
water
air
butterflies
beetles
Consider the following statement(s)
In Protandrous flowers pistil matures earlier
In Protogynous flowers pistil matures earlier
Herkogamy is noticed in unisexual flowers
Distyly is present in Primula
Coelorhiza is found in
Paddy
Bean
Pea
Tridax
Parthenocarpic fruits lack
Endocarp
Epicarp
Mesocarp
seed
In majority of plants pollen is liberated at
1 celled stage
2 celled stage
3 celled stage
4 celled stage
