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 |
Match the structure in Column I with the description in Column II and choose your answer from the codes given below:
Column I | Column II | ||
A. | Stigma | a. | Landing platform for pollen grains |
B. | Ovary | b. | Basal bulged part of the pistil |
C. | Placenta | c. | Part of the ovary where funiculus attaches |
D. | Ovule | d. | Megasporangium |
Codes
A | B | C | D | |
1. | a | b | c | d |
2. | a | c | b | d |
3. | b | a | d | c |
4. | d | c | b | a |
From among the sets of terms given below, identify those that are associated with the gynoecium.
1. | Stigma, ovule, embryo sac, placenta |
2. | Thalamus, pistil, style, ovule |
3. | Ovule, ovary, embryo sac, tapetum |
4. | Ovule, stamen, ovary, embryo sac |
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 |
Table I: | ||
A. | B. | C. |
Table II | |
P. | A dissected flower of Hibiscus showing pistil where other floral parts have been removed |
Q. | Multicarpellary, syncarpous pistil of Papaver |
R. | Multicarpellary, apocarpous gynoecium of Michelia |
A | B | C | |
1. | P | Q | R |
2. | P | R | Q |
3. | Q | R | P |
4. | R | P | Q |
The number of cycles of mitotic cell divisions the megaspore goes through, before the embryo sac is fully formed is:
1. | 1 | 2. | 2 |
3. | 3 | 4. | 4 |
In angiosperms, the mature female gametophyte is represented by:
1. | Nucellus | 2. | Megaspore |
3. | MMC | 4. | Embryosac |
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 |
Regarding the mature monosporic female gametophyte of angiosperms:
1. | The egg apparatus is at the chalazal end and the antipodals at the micropylar end. |
2. | The central cell has a diploid polar nucleus. |
3. | The structure is 8-celled and 7-nucleate. |
4. | Three sequential mitotic divisions lead to its formation. |