1
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following statements is correct?
A
Xylem consists of tracheids, vessels, xylem parenchyma and xylem fibres
B
Flexibility in plants is due to sclerenchyma
C
parenchyma have no intercellular spaces
D
Xylem consists of sieve plate, sieve tube and companion cells
2
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Who among the following popularised the use of embryological characters in taxonomy?
A
Carl Linnaeus
B
Panchanan Maheshwari
C
Birbal Sahni
D
Bentham and Hooker
3
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following is the major constituent of biogas?
A
Carbon dioxide
B
Nitrous oxide
C
Methane
D
Oxygen
4
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Thyroid gland produces a hormone called 'thyroxine' which
A
controls blood glucose levels
B
controls ovulation
C
controls metabolic rate
D
maintains pregnancy
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