Which of the following is not a cloning vector?

NEET-2023 Biotechnology-Principles-and-Processes [class-xii ]

• Probe
• BAC
• YAC
• pBR322
Correct Option: A  [ Probe ]

Remark:

Which one of the following techniques does not serve the purpose of early diagnosis of a disease for its early treatment?

NEET-2023 Biotechnology-and-its-Applications [class-xii ]

• Enzyme Linked Immuno-Sorbent Assay (ELISA) technique
• Recombinant DNA Technology
• Serum and Urine analysis
• Polymerase Chain Reaction (PCR) technique
Correct Option: C  [ Serum and Urine analysis ]

Remark:

Match List-I with List-II.

NEET-2023 Organisms-and-Populations [class-xii ]

• A-II, B-III, C-I, D-IV
• A-I, B-II, C-III, D-IV
• A-I, B-II, C-IV, D-III
• A-III, B-IV, C-I, D-II
Correct Option: B  [ A-I, B-II, C-III, D-IV ]

Remark:

Which of the following statements is correct?

NEET-2023 Environmental-Issues [class-xii ]

• Algal Bloom decreases fish mortality.
• Eutrophication refers to increase in domestic sewage and waste water in lakes.
• Biomagnification refers to increase in concentration of the toxicant at successive trophic levels.
• Presence of large amount of nutrients in water restricts 'Algal Bloom'.
Correct Option: C  [ Biomagnification refers to increase in concentration of the toxicant at successive trophic levels. ]

Remark:

Given below are two statements:
Statement I: Electrostatic precipitator is most widely used in thermal power plant.
Statement II: Electrostatic precipitator in thermal power plant removes ionising radiations
In the light of the above statements, choose the most appropriate answer from the options given below:

NEET-2023 Environmental-Issues [class-xii ]

• Statement I incorrect but Statement II is correct.
• Both Statement I and Statement II are correct.
• Both Statement I and Statement II are incorrect.
• Statement I is correct but Statement II is incorrect.
Correct Option: D  [ Statement I is correct but Statement II is incorrect. ]

Remark:

The unique mammalian characteristics are:

NEET-2023 Animal-Kingdom [class-xi ]

• pinna, monocondylic skull and mammary glands
• hairs, tympanic membrane and mammary glands
• hairs, pinna and mammary glands
• hairs, pinna and indirect development
Correct Option: C  [ hairs, pinna and mammary glands ]

Remark:

Select the correct statements with reference to chordates.
A. Presence of a mid-dorsal, solid and double nerve cord.
B. Presence of closed circulatory system.
C. Presence of paired pharyngeal gills
D. Presence of dorsal heart
E. Triploblastic pseudocoelomate animals.
Choose the correct answer from the options given below:

NEET-2023 Animal-Kingdom [class-xi ]

• C, D and E only
• A, C and D only
• B and C only
• B, D and E only
Correct Option: C  [ B and C only ]

Remark:

Which of the following is characteristic feature of cockroach regarding sexual dimorphism?

NEET-2023 Structural-Organisation-in-Animals [class-xi ]

• Presence of anal cerci
• Dark brown body colour and anal cerci
• Presence of anal styles
• Presence of sclerites
Correct Option: C  [ Presence of anal styles ]

Remark:

Match List-I with List-II.

NEET-2023 Structural-Organisation-in-Animals [class-xi ]

• A-III, B-IV, C-II, D-I
• A-I, B-II, C-IV, D-III
• A-II, B-III, C-I, D-IV
• A-II, B-I, C-IV, D-III
Correct Option: D  [ A-II, B-I, C-IV, D-III ]

Remark:

In cockroach, excretion is brought about by:
A.Phallic gland
B.Urecose gland
C.Ncphrocytes
D.Fat body
E.Collatcrial glands
Choose the correct answer from the options given below:

NEET-2023 Structural-Organisation-in-Animals [class-xi ]

• B and D only
• A and E only
• A, B and E only
• B, C and D only
Correct Option: D  [ B, C and D only ]

Remark: