16
Self-pollination in flowers which never open up in its life span is known as
1
autogamy
2
homogamy
3
cleistogamy
4
allogamy
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17
In pomegranate, the fruit is known as
1
balausta
2
pepo
3
amphisarca
4
hesperidium
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18
The cell theory was proposed by
1
Schleiden and Schwann
2
Darwin and Wallace
3
Mendel and Morgan
4
Watson and Crick
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Answer: Schleiden and Schwann
19
Ribosomes are centre for
1
respiration
2
protein synthesis
3
photosynthesis
4
lipid synthesis
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Answer: protein synthesis
20
Tonoplast is a differentially permeable membrane that encloses the
1
cytoplasm
2
nucleus
3
vacuole
4
mitochondria
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21
Beauty of Bougainvillea flower is because of
1
calyxes
2
bracts
3
sepals
4
petals
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22
Endosperm is absent in the seeds of
1
gram
2
cumin
3
orchid
4
castor
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23
The 'eyes' of potato tubers are
1
shoot buds
2
flower buds
3
root buds
4
axillary buds
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24
The plant with most durable wood is
1
hollong
2
sissoo
3
sal
4
teak
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25
Cork tissue arises from
1
periderm
2
phellogen
3
phelloderm
4
phellem
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26
Medullary rays are made up of
1
parenchymatous cells
2
sclerenchymatous cells
3
fibres
4
collenchymatous cells
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Answer: parenchymatous cells
27
Growth rings are formed by the activity of
1
cambium
2
phloem
3
xylem
4
both phloem and xylem
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28
The layer of cells between endodermis and vascular bundles is called
1
hypodermis
2
cortex
3
pith
4
pericycle
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29
Aerenchyma is found in
1
lithophytes
2
sciophytes
3
hydrophytes
4
xerophytes
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30
Quiescent centre is associated with
1
shoot
2
root
3
ground tissue
4
epidermal tissue
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