Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
In the light of the above statements, choose the most appropriate answer from the options given below:
| Assertion (A): | Pregnancy is characterised by metabolic changes in the mother. |
| Reason (R): | During pregnancy, the level of thyroxine is increased in the maternal blood. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Fetal Development & Parturition |
61%
Level 2: 60%+
NEET - 2022
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Select the incorrect statements with respect to Cyclostomes:
Choose the most appropriate answer from the options given below:
1. (a) and (b) only
2. (b) and (c) only
3. (b) and (d) only
4. (a) and (d) only
| (a) | They lack scales and paired fins. |
| (b) | They have circular mouth with jaws. |
| (c) | They bear 6-15 pairs of gills. |
| (d) | They migrate to deep sea for spawning. |
1. (a) and (b) only
2. (b) and (c) only
3. (b) and (d) only
4. (a) and (d) only
Subtopic: Super Class Pisces & its General Characteristics |
59%
Level 3: 35%-60%
NEET - 2022
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Role of enamel is to :
1. Connect crown of tooth with its root.
2. Masticate the food.
3. Form bolus.
4. Give basic shape to the teeth
1. Connect crown of tooth with its root.
2. Masticate the food.
3. Form bolus.
4. Give basic shape to the teeth
Subtopic: Alimentary Canal: Oral Cavity & Teeth |
65%
Level 2: 60%+
NEET - 2022
Hints
Choose the correct statements :
Choose the most appropriate answer from the options given below:
| (a) | Bones support and protect softer tissues and organs |
| (b) | Weight bearing function is served by limb bones |
| (c) | Ligament is the site of production of blood cells |
| (d) | Adipose tissue is specialised to store fats |
| (e) | Tendons attach one bone to another |
Choose the most appropriate answer from the options given below:
| 1. | (a), (b) and (d) only | 2. | (b), (c) and (e) only |
| 3. | (a), (c) and (d) only | 4. | (a), (b) and (e) only |
Subtopic: Connective Tissue |
84%
Level 1: 80%+
NEET - 2022
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Bivalent or Tetrad formation is a characteristic feature observed during :
| 1. | Synaptonemal complex in the zygotene stage |
| 2. | Chiasmata in the diplotene stage |
| 3. | Synaptonemal complex in the pachytene stage |
| 4. | Chiasmata in the zygotene stage |
Subtopic: Cell Cycle: Meiosis I |
69%
Level 2: 60%+
NEET - 2022
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Which of the following are true about the taxonomical aid 'key' ?
Choose the most appropriate answer from the options given below :
1. (a), (b) and (c) only
2. (b), (c) and (d) only
3. (a), (b), (c) and (e) only
4. (a), (c), (d) and (e) only
| a. | Keys are based on the similarities and dissimilarities. |
| b. | Key is analytical in nature. |
| c. | Keys are based on the contrasting characters in pair called couplets. |
| d. | Same key can be used for all taxonomic categories. |
| e | Each statement in the key is called Lead. |
Choose the most appropriate answer from the options given below :
1. (a), (b) and (c) only
2. (b), (c) and (d) only
3. (a), (b), (c) and (e) only
4. (a), (c), (d) and (e) only
80%
Level 1: 80%+
NEET - 2022
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A normal girl, whose mother is haemophilic marries a male with no ancestral history of haemophilia. What will be the possible phenotypes of the offsprings?
Choose the most appropriate answer from the options given below:
1. (a) and (b) only
2. (b) and (c) only
3. (a) and (d) only
4. (b) and (d) only
| (a) | Haemophilic son and haemophilic daughter. |
| (b) | Haemophilic son and carrier daughter. |
| (c) | Normal daughter and normal son. |
| (d) | Normal son and haemophilic daughter. |
1. (a) and (b) only
2. (b) and (c) only
3. (a) and (d) only
4. (b) and (d) only
Subtopic: Mendelian Disorders: Hemophilia |
74%
Level 2: 60%+
NEET - 2022
Hints
IUDs are small objects made up of plastic or copper that are inserted in the uterine cavity. Which of the following statements are correct about IUDs ?
Choose the most appropriate answer from the options given below :
1. (a), (d) and (e) only
2. (b) and (c) only
3. (b) and (d) only
4. (d) only
| (a) | IUDs decrease phagocytosis of sperm within the uterus. |
| (b) | The released copper ions suppress sperm motility. |
| (c) | IUDs do not make the cervix hostile to the sperm. |
| (d) | IUDs suppress the fertilization capacity of sperm. |
| (e) | The IUDs require surgical intervention for their insertion in the uterine cavity. |
1. (a), (d) and (e) only
2. (b) and (c) only
3. (b) and (d) only
4. (d) only
Subtopic: Contraception: Barrier Methods & IUDs |
79%
Level 2: 60%+
NEET - 2022
Hints
Refer to the following statements for agarose-gel electrophoresis:
Choose the most appropriate answer from the options given below :
| (a) | Agarose is a natural polymer obtained from sea-weed. |
| (b) | The separation of DNA molecules in agarose-gel electrophoresis depends on the size of DNA. |
| (c) | The DNA migrates from negatively-charged electrode to the positively-charged electrode. |
| (d) | The DNA migrates from positively-charged electrode to the negatively-charged electrode. |
| 1. | (a) and (b) only | 2. | (a), (b) and (c) only |
| 3. | (a), (b) and (d) only | 4. | (b), (c) and (d) only |
Subtopic: Separation and Isolation of DNA fragments |
83%
Level 1: 80%+
NEET - 2022
Hints
Match List-I with List-II
Choose the correct answer from the options given below:
| List-I | List-II | ||
| (a) | Multipolar neuron | (i) | Somatic neural system |
| (b) | Bipolar neuron | (ii) | Cerebral cortex |
| (c) | Myelinated nerve fibre | (iii) | Retina of Eye |
| (d) | Unmyelinated nerve fibre | (iv) | Spinal nerves |
Choose the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (i) | (iv) | (ii) |
| 2. | (ii) | (iv) | (iii) | (i) |
| 3. | (ii) | (iii) | (i) | (iv) |
| 4. | (ii) | (iii) | (iv) | (i) |
Subtopic: Neuroanatomy |
69%
Level 2: 60%+
NEET - 2022
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