<PAGE> PAGE 1
000 A000000 06/30/2000
000 C000000 0000883368
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 THE BLACKROCK INVESTMENT QUALITY TERM TRUST
001 B000000 811-6542
001 C000000 9733677530
002 A000000 GC3, 100 MULBERRY STREET, 4TH FLOOR
002 B000000 NEWARK
002 C000000 NJ
002 D010000 07102
002 D020000 4077
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
007 C010100 1
007 C010200 2
007 C010300 3
007 C010400 4
007 C010500 5
007 C010600 6
007 C010700 7
007 C010800 8
007 C010900 9
007 C011000 10
008 A000001 BLACKROCK ADVISORS, INC.
008 B000001 A
008 C000001 801-32183
008 D010001 NEW YORK
008 D020001 NY
008 D030001 10154
010 A000001 PRUDENTIAL INVESTMENTS FUND MANAGEMENT LLC
010 B000001 811-31104
010 C010001 NEWARK
010 C020001 NJ
010 C030001 07102
010 C040001 4077
012 A000001 STATE STREET BANK & TRUST COMPANY
012 B000001 84-0000000
012 C010001 NORTH QUINCY
012 C020001 MA
012 C030001 02171
013 A000001 DELOITTE & TOUCHE LLP
<PAGE> PAGE 2
013 B010001 NEW YORK
013 B020001 NY
013 B030001 10281
013 B040001 1434
015 A000001 STATE STREET BANK & TRUST COMPANY
015 B000001 C
015 C010001 NORTH QUINCY
015 C020001 MA
015 C030001 02171
015 E010001 X
018 000000 Y
019 A000000 Y
019 B000000 22
019 C000000 BLACKROCK.
020 A000001 MERRILL LYNCH, PIERCE,FENNER & SMITH, INC.
020 B000001 13-3247006
020 C000001 42
020 A000002 SALOMON SMITH BARNEY, INC.
020 B000002 13-1912900
020 C000002 25
020 C000003 0
020 C000004 0
020 C000005 0
020 C000006 0
020 C000007 0
020 C000008 0
020 C000009 0
020 C000010 0
021 000000 67
022 A000001 LEHMAN BROS., INC.
022 B000001 13-2518466
022 C000001 346030
022 D000001 0
022 A000002 SALOMON SMITH BARNEY, INC.
022 B000002 13-1912900
022 C000002 206759
022 D000002 0
022 A000003 COMMERZBANK CAPITAL MARKETS CO.
022 B000003 13-3439358
022 C000003 58999
022 D000003 0
022 A000004 PAINEWEBBER INCORPORATED
022 B000004 13-2638166
022 C000004 34945
022 D000004 0
022 A000005 PRUDENTIAL SECURITIES INCORPORATED
022 B000005 22-2347336
022 C000005 25054
022 D000005 2602
022 A000006 MORGAN STALEY DEAN WITTER & CO.
022 B000006 13-2655998
<PAGE> PAGE 3
022 C000006 24984
022 D000006 0
022 A000007 LANSTON (AUBREY G.) & CO., INC.
022 B000007 13-5552129
022 C000007 23883
022 D000007 0
022 A000008 BARCLAYS CAPITAL, INC.
022 C000008 23206
022 D000008 0
022 A000009 DONALDSON, LUFKIN & JENRETTE SECURITIES CORP.
022 B000009 13-2741729
022 C000009 13311
022 D000009 2824
022 A000010 CANTOR FITZGERALD & CO., INC.
022 C000010 0
022 D000010 13094
023 C000000 781420
023 D000000 45605
024 000000 Y
025 A000001 DONALDSON, LUFKIN & JENRETTE SECURITIES CORP.
025 B000001 13-2741729
025 C000001 D
025 D000001 944
025 A000002 CREDIT SUISSE FIRST BOSTON CORP.
025 B000002 13-5659485
025 C000002 D
025 D000002 3167
025 A000003 MERRILL LYNCH, PIERCE, FENNER & SMITH, INC.
025 B000003 13-3247006
025 C000003 D
025 D000003 7688
025 A000004 MORGAN STANLEY DEAN WITTER CO.
025 B000004 13-2655998
025 C000004 D
025 D000004 4301
025 A000005 GOLDMAN, SACHS & CO., INC.
025 B000005 13-5108880
025 C000005 D
025 D000005 4662
025 A000006 LEHMAN BROS., INC.
025 B000006 13-2518466
025 C000006 D
025 D000006 3462
025 A000007 PAINEWEBBER INCOPORATED
025 B000007 13-2638166
025 C000007 D
025 D000007 2536
025 A000008 SALOMON SMITH BARNEY, INC.
025 B000008 13-1912900
025 C000008 D
025 D000008 1917
<PAGE> PAGE 4
026 A000000 N
026 B000000 N
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027 000000 N
028 A010000 0
028 A020000 0
028 A030000 0
028 A040000 0
028 B010000 0
028 B020000 0
028 B030000 0
028 B040000 0
028 C010000 0
028 C020000 0
028 C030000 0
028 C040000 0
028 D010000 0
028 D020000 0
028 D030000 0
028 D040000 0
028 E010000 0
028 E020000 0
028 E030000 0
028 E040000 0
028 F010000 0
028 F020000 0
028 F030000 0
028 F040000 0
028 G010000 0
028 G020000 0
028 G030000 0
028 G040000 0
028 H000000 0
030 A000000 0
030 B000000 0.00
030 C000000 0.00
031 A000000 0
031 B000000 0
032 000000 0
033 000000 0
035 000000 0
036 B000000 0
038 000000 0
042 A000000 0
042 B000000 0
<PAGE> PAGE 5
042 C000000 0
042 D000000 0
042 E000000 0
042 F000000 0
042 G000000 0
042 H000000 0
043 000000 0
044 000000 0
045 000000 Y
046 000000 N
047 000000 Y
048 000000 0.600
048 A010000 0
048 A020000 0.000
048 B010000 0
048 B020000 0.000
048 C010000 0
048 C020000 0.000
048 D010000 0
048 D020000 0.000
048 E010000 0
048 E020000 0.000
048 F010000 0
048 F020000 0.000
048 G010000 0
048 G020000 0.000
048 H010000 0
048 H020000 0.000
048 I010000 0
048 I020000 0.000
048 J010000 0
048 J020000 0.000
048 K010000 0
048 K020000 0.000
049 000000 N
050 000000 N
051 000000 N
052 000000 N
053 A000000 N
054 A000000 Y
054 B000000 Y
054 C000000 N
054 D000000 N
054 E000000 N
054 F000000 N
054 G000000 N
054 H000000 Y
054 I000000 N
054 J000000 Y
054 K000000 N
054 L000000 N
<PAGE> PAGE 6
054 M000000 N
054 N000000 N
054 O000000 N
055 A000000 N
055 B000000 N
056 000000 Y
057 000000 N
058 A000000 N
059 000000 Y
060 A000000 Y
060 B000000 Y
061 000000 0
062 A000000 Y
062 B000000 0.0
062 C000000 1.0
062 D000000 0.0
062 E000000 0.0
062 F000000 0.0
062 G000000 0.0
062 H000000 0.0
062 I000000 0.0
062 J000000 0.0
062 K000000 0.0
062 L000000 0.0
062 M000000 12.4
062 N000000 53.7
062 O000000 6.9
062 P000000 35.6
062 Q000000 26.0
062 R000000 0.0
063 A000000 0
063 B000000 5.9
064 A000000 N
064 B000000 N
066 A000000 N
067 000000 N
068 A000000 N
068 B000000 N
069 000000 N
070 A010000 Y
070 A020000 Y
070 B010000 N
070 B020000 N
070 C010000 Y
070 C020000 N
070 D010000 N
070 D020000 N
070 E010000 Y
070 E020000 Y
070 F010000 N
070 F020000 N
<PAGE> PAGE 7
070 G010000 Y
070 G020000 N
070 H010000 N
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 Y
070 J020000 Y
070 K010000 N
070 K020000 N
070 L010000 Y
070 L020000 Y
070 M010000 N
070 M020000 N
070 N010000 Y
070 N020000 N
070 O010000 Y
070 O020000 Y
070 P010000 Y
070 P020000 Y
070 Q010000 N
070 Q020000 N
070 R010000 Y
070 R020000 Y
071 A000000 50549
071 B000000 54139
071 C000000 437210
071 D000000 12
072 A000000 6
072 B000000 11372
072 C000000 0
072 D000000 0
072 E000000 0
072 F000000 963
072 G000000 160
072 H000000 0
072 I000000 14
072 J000000 46
072 K000000 0
072 L000000 46
072 M000000 42
072 N000000 16
072 O000000 308
072 P000000 0
072 Q000000 0
072 R000000 22
072 S000000 70
072 T000000 0
072 U000000 0
072 V000000 0
072 W000000 7
<PAGE> PAGE 8
072 X000000 1694
072 Y000000 0
072 Z000000 9678
072AA000000 2705
072BB000000 7428
072CC010000 1454
072CC020000 0
072DD010000 6902
072DD020000 0
072EE000000 0
073 A010000 0.1900
073 A020000 0.0000
073 B000000 0.0000
073 C000000 0.0000
074 A000000 6
074 B000000 0
074 C000000 3079
074 D000000 434803
074 E000000 0
074 F000000 0
074 G000000 0
074 H000000 0
074 I000000 0
074 J000000 21
074 K000000 0
074 L000000 6291
074 M000000 708
074 N000000 444908
074 O000000 0
074 P000000 159
074 Q000000 0
074 R010000 121056
074 R020000 0
074 R030000 0
074 R040000 754
074 S000000 0
074 T000000 322939
074 U010000 36811
074 U020000 0
074 V010000 8.77
074 V020000 0.00
074 W000000 0.0000
074 X000000 622
074 Y000000 242427
075 A000000 0
075 B000000 320936
076 000000 7.94
077 A000000 Y
077 B000000 N
077 C000000 Y
077 D000000 N
<PAGE> PAGE 9
077 E000000 N
077 F000000 N
077 G000000 N
077 H000000 N
077 I000000 N
077 J000000 N
077 K000000 N
077 L000000 N
077 M000000 N
077 N000000 N
077 O000000 N
077 P000000 N
077 Q010000 N
077 Q020000 N
077 Q030000 N
078 000000 N
080 C000000 0
081 B000000 0
082 B000000 0
083 B000000 0
084 B000000 0
086 A010000 36811
086 A020000 345248
086 B010000 0
086 B020000 0
086 C010000 0
086 C020000 0
086 D010000 0
086 D020000 0
086 E010000 0
086 E020000 0
086 F010000 0
086 F020000 0
087 A010000 COMMON STOCK
087 A020000 09247J102
087 A030000 BQT
088 A000000 N
088 B000000 N
088 C000000 N
088 D000000 N
SIGNATURE OTHNEIL ROSE
TITLE TECHNICAL
