31
Ductus caroticus is present in the arterial system of
1
toad
2
snake
3
calotes
4
crocodile
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32
An aperture called foramen of panizzae' is present in
1
middle ear of reptile
2
cranium of reptile
3
heart of crocodile
4
heart of rabbit
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Answer: heart of crocodile
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33
Eutherians are characterized by
1
hairy skin
2
presence of teats
3
ovoviviparity
4
true placentation
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Answer: true placentation
34
Crossing-over takes place in which stage of meiosis-I?
1
Leptotene
2
Zygotene
3
Pachytene
4
Diplotene
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35
Ecological pyramids were given by
1
Tansley
2
Elton
3
Odum
4
Haeckel
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36
The 10% energy transfer law in food chain was first given by
1
Lindeman
2
Tansley
3
Elton
4
Rawkiaer
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37
Eutrophication is
1
excess oxygen in ponds
2
abundant fertilizers in lakes
3
lack of algae in lakes
4
abundant nektons in lakes
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Answer: abundant fertilizers in lakes
38
Cellulose in rabbit is digested in
1
stomach
2
rumen
3
buccal cavity
4
caecum
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39
The terminal electron receptor in aerobic respiration is
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40
Which step of translation does not consume a high-energy phosphate bond?
1
Translocation
2
Amino acid activation
3
Peptidyl transferase reaction
4
Aminoacyl t-RNA binding to A-site
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Answer: Aminoacyl t-RNA binding to A-site
41
Anterior abdominal vein in frog is formed by union of
1
right and left pelvic veins
2
right and left sciatic veins
3
right and left femoral veins
4
right and left dorsolumber veins
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Answer: right and left pelvic veins
42
Km value of an enzyme is the substrate concentration at which the reaction attains
1
2 Vmax
2
\ Vmax
3
4 Vmax
4
i fmax
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43
The fats absorbed from the gut are transferred to blood in the form of
1
chylomicron
2
micelles
3
chemomicrons
4
liposomes
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44
'Bundle of His is a group of
1
ganglia
2
nerve fibres
3
muscle fibres
4
connective tissues
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45
Myxedema and Graves' disease are due to improper functioning of
1
pituitary
2
adrenal cortex
3
thyroid
4
thymus
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