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Select the correct statements regarding dissolved Oxygen and Biochemical Oxygen demand.
A: BOD is inversely related to dissolved oxygen
B: Low dissolved oxygen and high BOD lead to loss of aquatic life.
C: High BOD leads to high dissolved oxygen
D: Both BOD and dissolved oxygen are indicator of health of a water body
E: Both BOD and dissolved oxygen are affected by amount of organic matter in the water body.
Choose the most appropriate answer from the options given below:
1. (A), (B), (C), (E) only 2. (A), (B), (D), (E) only
3. (A), (B), (C), (D) only 4. (B), (C), (D), (E) only
Subtopic:  Water Pollution |
 72%
Level 2: 60%+
NEET - 2023
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Given below are two statements:
Statement I: Parathyroid hormone acts on bones and stimulates the process of bone resorption
Statement II: Parathyroid hormone along with Thyrocalcitonin plays a significant role in carbohydrate metabolism.
In the light of the above statements, choose the correct answer from the options given below:
1. Statement I is correct but Statement II is incorrect
2. Statement I is incorrect but Statement II is correct
3. Both Statement I and Statement II are correct
4. Both Statement I and Statement II are incorrect
Subtopic:  Parathyroid |
 71%
Level 2: 60%+
NEET - 2023
Hints
Select the correct statements:
A: Platyhelminthes are triploblastic, pseudocoelomate and bilaterally symmetrical organisms.
B: Ctenophores reproduce only sexually and fertilization is external.
C: In tapeworm, fertilization is internal but sexes are not separate.
D: Ctenophores are exclusively marine, diploblastic and bioluminescent organisms.
E: In sponges, fertilization is external and development is direct.

Choose the correct answer from the options given below:
1. (A), (C) and (D) only 2. (B), (C) and (D) only
3. (A) and (E) only 4. (B) and (D) only
Subtopic:  Phylum Porifera | Phylum Coelenterata | Phylum Ctenophora | Phylum Platyhelminthes |
 67%
Level 2: 60%+
NEET - 2023
Hints
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Match List-I with List-II
List-I List-II
(A) Gene therapy (I) Separation of DNA fragments
(B) RNA interference (II) Diagnostic test for AIDS
(C) ELISA (III) Cellular defense
(D) Gel Electrophoresis (IV) Allows correction of a gene defect

Choose the correct answer from the options given below:
Options: (A) (B) (C) (D)
1. IV I II III
2. IV II III I
3. IV III II I
4. IV III I II
Subtopic:  Interference RNA Tech | Med Applications & Humulin | Gene Therapy | Molecular Diagnosis |
 91%
Level 1: 80%+
NEET - 2023
Hints
Which of the following statements are correct in the context of Golgi apparatus?
A: It is the important site for the formation of glycoprotein and glycolipids
B: It produces cellular energy in the form of ATP
C: It modifies the protein synthesized by ribosomes on ER
D: It facilitates the transport of ions
E: It provides mechanical support
Choose the most appropriate answer from the options given below:
1. (B) and (C) only 2. (A) and (C) only
3. (A) and (D) only 4. (D) and (E) only
Subtopic:  Golgi Apparatus |
 84%
Level 1: 80%+
NEET - 2023
Hints
Select the incorrect statement with respect to Multiple Ovulation Embryo Transfer (MOET) technology.  
1.  Fertilised eggs at 4 to 6 cells - stages are recovered non-surgically from a super-ovulating cow and transferred to a surrogate mother.
2.  It is used to increase herd size in a short time
3.  Cow is administered with hormones to induce super-ovulation.
4.  Super-ovulating cow is either mated with an elite bull or is artificially inseminated


 
 58%
Level 3: 35%-60%
NEET - 2023
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Given below are two statements:
I: In cockroaches, the forewings are transparent and prothoracic in origin.
II: In cockroaches, the hind wings are opaque, leathery and mesothoracic in origin.
In light of the above statements, choose the correct answer from the options given below:
1. Statement I is correct but Statement II is false
2. Statement I is incorrect but Statement II is true
3. Both Statement I and Statement II are true
4. Both Statement I and Statement II are false
Subtopic:  Cockroach: Intro & External Morphology |
 71%
Level 2: 60%+
NEET - 2023
Hints
Match List-I with List-II
List-I List-II
(A) Columnar epithelium (I) Ducts of glands
(B) Ciliated epithelium (II) Inner lining of stomach and intestine
(C) Squamous epithelium (III) Inner lining of bronchioles
(D) Cuboidal epithelium (IV) Endothelium

Choose the correct answer from the options given below:
Options: (A) (B) (C) (D)
1. III II I IV
2. III II IV I
3. II III I IV
4. II III IV I
Subtopic:  Simple Epithelium |
 72%
Level 2: 60%+
NEET - 2023
Hints
Match List-I with List-II
List-I List-II
(A) Cytokine barriers (I) Mucus coating of
respiratory tract
(B) Cellular barriers (II) Interferons
(C) Physiological barriers (III) Neutrophils and
Macrophages
(D) Physical barriers (IV) Tears and Saliva

Choose the correct answer from the options given below:
Options: (A) (B) (C) (D)
1. (II) (III) (IV) (I)
2. (III) (I) (IV) (II)
3. (III) (I) (II) (IV)
4. (II) (III) (I) (IV)
Subtopic:  Details of Immunity |
 77%
Level 2: 60%+
NEET - 2023
Hints
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Select the correct statement/s with respect to mechanism of sex determination in Grasshopper.
A: It is an example of female heterogamety
B: Male produces two different types of gametes either with or without X chromosomes.
C: Total number of chromosomes (autosomes and sex chromosomes) is same in both males and females.
D: All eggs bear an additional X chromosome besides the autosomes.
Choose the correct answer from the options given below:
1. (B) and (D) only 2. (A), (C) and (D) only
3. (A) only 4. (A) and (C) only
Subtopic:  Sex Determination |
 77%
Level 2: 60%+
NEET - 2023
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