Which stage of meiosis can last for months or years in the oocytes of some vertebrates?
1. Leptotene
2. Pachytene
3. Diplotene
4. Diakinesis
1. Leptotene
2. Pachytene
3. Diplotene
4. Diakinesis
Subtopic: Cell Cycle: Meiosis I |
91%
Level 1: 80%+
NEET - 2022
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When one CO2 molecule is fixed as one molecule of triose phosphate, which of the following photochemically made, high energy chemical intermediates are used in the reduction phase?
1. 1 ATP + 1 NADPH
2. 1 ATP + 2 NADPH
3. 2 ATP + 1 NADPH
4. 2 ATP + 2 NADPH
1. 1 ATP + 1 NADPH
2. 1 ATP + 2 NADPH
3. 2 ATP + 1 NADPH
4. 2 ATP + 2 NADPH
Subtopic: Dark Reaction : Calvin Cycle |
Level 4: Below 35%
NEET - 2022
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In lac operon, z gene codes for :
1. \(\beta -\)galactosidase
2. Permease
3. Repressor
4. Transacetylase
1. \(\beta -\)galactosidase
2. Permease
3. Repressor
4. Transacetylase
Subtopic: Gene Regulation: Lac Operon |
92%
Level 1: 80%+
NEET - 2022
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Initiation of lateral roots and vascular cambium during secondary growth takes place in cells of :
| 1. | Epiblema | 2. | Cortex |
| 3. | Endodermis | 4. | Pericycle |
Subtopic: Anatomy of Root |
76%
Level 2: 60%+
NEET - 2022
Hints
Match List-I with List-II:
Choose the correct answer from the options given below:
| List-I | List-II | ||
| (A) | Adenine | (I) | Pigment |
| (B) | Anthocyanin | (II) | Polysaccharide |
| (C) | Chitin | (III) | Alkaloid |
| (D) | Codeine | (IV) | Purine |
| (A) | (B) | (C) | (D) | |
| 1. | (IV) | (I) | (II) | (III) |
| 2. | (IV) | (III) | (II) | (I) |
| 3. | (III) | (I) | (IV) | (II) |
| 4. | (I) | (IV) | (III) | (II) |
Subtopic: Nucleic Acid | Primary & Secondary Metabolites | Carbohydrates: Cellulose, Chitin, Inulin & Agar |
88%
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) | In lac operon i gene codes for | (i) | transacetylase |
| (b) | In lac operon z gene codes for | (ii) | permease |
| (c) | In lac operon y gene codes for | (iii) | \(\beta-\)galactosidase |
| (d) | In lac operon a gene codes for | (iv) | Repressor |
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (ii) | (i) | (iv) |
| 2. | (iv) | (iii) | (ii) | (i) |
| 3. | (iv) | (i) | (iii) | (ii) |
| 4. | (iii) | (i) | (iv) | (ii) |
Subtopic: Gene Regulation: Lac Operon |
93%
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) | Chlamydomonas | (i) | Moss |
| (b) | Cycas | (ii) | Pteridophyte |
| (c) | Selaginella | (iii) | Alga |
| (d) | Sphagnum | (iv) | Gymnosperm |
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (i) | (ii) | (iv) |
| 2. | (iii) | (iv) | (ii) | (i) |
| 3. | (iii) | (ii) | (i) | (iv) |
| 4. | (ii) | (iii) | (i) | (iv) |
Subtopic: Algae | Bryophytes | Pteridophytes | Gymnosperms |
91%
Level 1: 80%+
NEET - 2022
Hints
Given below are two statements:
In the light of the above statements, choose the correct answer from the options given below:
1. Both Statement I and Statement II are correct.
2. Both Statement I and Statement II are incorrect.
3. Statement I is correct but Statement II is incorrect.
4. Statement I is incorrect but Statement II is correct.
| Statement I: | DNA polymerases catalyse polymerisation only in one direction, that is 5' →3' |
| Statement II: | During replication of DNA, on one strand the replication is continuous while on other strand it is discontinuous. |
1. Both Statement I and Statement II are correct.
2. Both Statement I and Statement II are incorrect.
3. Statement I is correct but Statement II is incorrect.
4. Statement I is incorrect but Statement II is correct.
Subtopic: DNA Replication |
88%
Level 1: 80%+
NEET - 2022
Hints
The Floral Diagram represents which one of the following families?
| 1. | Fabaceae | 2. | Brassicaceae |
| 3. | Solanaceae | 4. | Liliaceae |
Subtopic: Semi Technical Description |
77%
Level 2: 60%+
NEET - 2022
Hints
The pioneer species in a hydrarch succession are :
1. Free-floating angiosperms
2. Submerged rooted plants
3. Phytoplanktons
4. Filamentous algae
1. Free-floating angiosperms
2. Submerged rooted plants
3. Phytoplanktons
4. Filamentous algae
80%
Level 1: 80%+
NEET - 2022
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