1
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus

Which one of the following produces nitrogen fixing nodules on the roots of Alnus?

A
Rhizobium
B
Frankia
C
Rhodospirillum
D
Beijerinckia
2
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

Read the following statements about the vascular bundles:

(a) In roots, xylem and phloem in a vascular bundle are arranged in an alternate manner along the different radii.

(b) Conjoint closed vascular bundles do not possess cambium

(c) In open vascular bundles, cambium is present in between xylem and phloem

(d) The vascular bundles of dicotyledonous stem possess endarch protoxylem

(e) In monocotyledonous root, usually there are more than six xylem bundles present

Choose the correct answer from the options given below :

A
(a), (b) and (d) only
B
(b), (c), (d) and (e) only
C
(a), (b), (c) and (d) only
D
(a), (c), (d) and (e) only
3
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

Identify the incorrect statement related to Pollination:

A
Pollination by water is quite rare in flowering plants
B
Pollination by wind is more common amongst abiotic pollination
C
Flowers produce foul odours to attract flies and beetles to get pollinated
D
Moths and butterflies are the most dominant pollinating agents among insects
4
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1

Which one of the following statement is not true regarding gel electrophoresis technique?

A
The process of extraction of separated DNA strands from gel is called elution.
B
The separated DNA fragments are stained by using ethidium bromide.
C
The presence of chromogenic substrate gives blue coloured DNA bands on the gel.
D
Bright orange coloured bands of DNA can be observed in the gel when exposed to UV light.
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