Q. No.In a multicarpellary syncarpous ovary:
| 1. | There is more than one pistil that is fused with the other |
| 2. | There is more than one pistil that is free from each other |
| 3. | There is one pistil that is fused with the stamen |
| 4. | There is more than one pistil that is fused with the stamen |
Subtopic: Pistil: Ovule | Pistil: Female Gametophyte |
88%
Level 1: 80%+
Hints
The correct description of the structure shown in the figure would be:
| 1. | Anatropous ovule; 1 – Nucellus; 2 – Chalaza; 3 – Raphe; 4 – Funiculus |
| 2. | Orthotropous ovule; 1 – Nucellus; 2 – Micropyle; 3 – Raphe; 4 – Funiculus |
| 3. | Anatropous ovule; 1 – Nucellus; 2 – Chalaza; 3 – Funiculus; 4 – Raphe |
| 4. | Anatropous ovule; 1 – Nucellus; 2 – Micropyle; 3 – Raphe; 4 – Funiculus |
Subtopic: Pistil: Ovule |
67%
Level 2: 60%+
Hints
Starting from the innermost part, the correct sequence of parts in an ovule are:
| 1. | egg, nucellus, embryo sac, integument |
| 2. | egg, embryo sac, nucellus, integument |
| 3. | embryo sac, nucellus, integument, egg |
| 4. | egg, integument, embryo sac, nucellus |
Subtopic: Pistil: Ovule | Pistil: Female Gametophyte |
70%
Level 2: 60%+
Hints
An anatropous ovule attaches to the placenta by means of:
| 1. | Funicle | 2. | Raphe |
| 3. | Hilum | 4. | Integuments |
Subtopic: Pistil: Ovule |
82%
Level 1: 80%+
Hints
Consider the following two statements regarding the integuments of an ovule:
| I: | Angiosperms are generally bitegmic and gymnosperms unitegmic. |
| II: | The integuments develop into the seed coat when the ovule matures after fertilization. |
Of the two statements:
1. Both I and II are true
2. Both I and II are false
3. Only I is true
4. Only II is true
Subtopic: Pistil: Ovule |
68%
Level 2: 60%+
Hints
Regarding part I of the diagram:
| Statement I: | A is the Chalazal end. |
| Statement II: | B is the microspore mother cell, C is the microspore dyad and D is the microspore tetrad. |
| 1. | Statement I is correct, Statement II is correct |
| 2. | Statement I is incorrect, Statement II is correct |
| 3. | Statement I is correct, Statement II is incorrect |
| 4. | Statement I is incorrect, Statement II is incorrect |
Subtopic: Pistil: Ovule |
Level 4: Below 35%
Hints
Regarding part II of the diagram:
| Statement I: | It shows the two, four, and eighth nucleate stages of the embryo sac. |
| Statement II: | The divisions are mitotic and free nuclear. |
| 1. | Statement I is correct, Statement II is correct |
| 2. | Statement I is incorrect, Statement II is correct |
| 3. | Statement I is correct, Statement II is incorrect |
| 4. | Statement I is incorrect, Statement II is incorrect |
Subtopic: Pistil: Ovule |
91%
Level 1: 80%+
Hints
Regarding part III of the diagram:
The correct statements are:
| Statement I: | It represents mature embryosac or the female gametophyte in an angiosperm. |
| Statement II: | A is the micropylar end and B is the Chalazal end |
| Statement III: | C guides the entry of the pollen tube into the embryo sac. |
| Statement IV: | D is the polar nuclei and E is the central cell. |
| Statement V: | F is the egg cell. |
| Statement VI: | G is the antipodals and H is special cellular thickenings. |
The correct statements are:
| 1. | Statement I, Statement IV, and Statement VI |
| 2. | Statement II, Statement III, Statement IV and Statement VI |
| 3. | Statement I, Statement IV, and Statement V |
| 4. | All Statements are correct |
Subtopic: Pistil: Ovule |
84%
Level 1: 80%+
Hints
When the embryosac develops from a single functional megaspore [the other three get generate], it is called as:
| 1. | Monosporic | 2. | Bisporic |
| 3. | Trisporic | 4. | Tetrasporic |
Subtopic: Pistil: Ovule |
90%
Level 1: 80%+
Hints
From the statements given below, choose the option that is true for a typical female gametophyte of a flowering plant:
| I: | It is 8-nucleate and 7-celled at maturity |
| II: | It is free-nuclear during the development |
| III: | It is situated inside the integument but outside the nucellus |
| IV: | It has an egg apparatus situated at the chalazal end |
| 1. | I and IV | 2. | II and III |
| 3. | I and II | 4. | II and IV |
Subtopic: Pistil: Ovule | Pistil: Female Gametophyte |
83%
Level 1: 80%+
Hints
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