Intialy, the single-celled zygote divides to form a proembryo. The zygote develops inside the seed. The sequence of development proceed through histodifferentiation, cell expansion and maturation drying. As the divisions proceed, the proembryo subsequently gives rise to the globular stage embryo. The globular stage embryo gives rise to a heart-shaped embryo which finally develops into a mature embryo. The mature dicot embryo has two cotyledons and an embryonal axis.
MHT CET-06.10.2020 Shift-I
Plant kingdom
259670
In plants growing under environmental stress condition, seeds germinate while they are on the mother plant. An example for such a condition is:
1 Wolffia
2 Brown algae
3 Rhizophora
4 Eucalyptus
Explanation:
In plants growing under environmental stress condition (such as drought, high salinity low and high temperature and light condition), seed germination occurs on the mother plant. An example of such a condition is Rhizophora which grow on mangrove vegetation.
TS EAMCET-02.05.2018 Shift-II
Plant kingdom
259671
What is the correct order stages for monosporic development of female gametophyte in angiosperms, arrange in sequence. (I) Functional megaspore (II) Free nuclear divisions (III) Embryosac (IV) Linear tetrad of megaspore (V) Megaspore mother cell
1 II, I, IV, V, III
2 I, II, IV, V, III
3 V. IV, I, II, III
4 IV, V, I, II, III
Explanation:
Monosporic development refers to the formation of a female gametophyte or embryosac from a single functional megaspore. In most flowering plants a single megaspore mother cell present at the micropylar pole of the nucleus region of the ovule undergoes meiosis to form four haploid megaspores later, out of these four megaspores only one functional megaspore are found into the female gametophyte, while the remaining three degenerate. The functional megaspore elongates along micropylar chalazal axis which is followed by mitotic division and then develops into the female gametophyte.
Intialy, the single-celled zygote divides to form a proembryo. The zygote develops inside the seed. The sequence of development proceed through histodifferentiation, cell expansion and maturation drying. As the divisions proceed, the proembryo subsequently gives rise to the globular stage embryo. The globular stage embryo gives rise to a heart-shaped embryo which finally develops into a mature embryo. The mature dicot embryo has two cotyledons and an embryonal axis.
MHT CET-06.10.2020 Shift-I
Plant kingdom
259670
In plants growing under environmental stress condition, seeds germinate while they are on the mother plant. An example for such a condition is:
1 Wolffia
2 Brown algae
3 Rhizophora
4 Eucalyptus
Explanation:
In plants growing under environmental stress condition (such as drought, high salinity low and high temperature and light condition), seed germination occurs on the mother plant. An example of such a condition is Rhizophora which grow on mangrove vegetation.
TS EAMCET-02.05.2018 Shift-II
Plant kingdom
259671
What is the correct order stages for monosporic development of female gametophyte in angiosperms, arrange in sequence. (I) Functional megaspore (II) Free nuclear divisions (III) Embryosac (IV) Linear tetrad of megaspore (V) Megaspore mother cell
1 II, I, IV, V, III
2 I, II, IV, V, III
3 V. IV, I, II, III
4 IV, V, I, II, III
Explanation:
Monosporic development refers to the formation of a female gametophyte or embryosac from a single functional megaspore. In most flowering plants a single megaspore mother cell present at the micropylar pole of the nucleus region of the ovule undergoes meiosis to form four haploid megaspores later, out of these four megaspores only one functional megaspore are found into the female gametophyte, while the remaining three degenerate. The functional megaspore elongates along micropylar chalazal axis which is followed by mitotic division and then develops into the female gametophyte.
Intialy, the single-celled zygote divides to form a proembryo. The zygote develops inside the seed. The sequence of development proceed through histodifferentiation, cell expansion and maturation drying. As the divisions proceed, the proembryo subsequently gives rise to the globular stage embryo. The globular stage embryo gives rise to a heart-shaped embryo which finally develops into a mature embryo. The mature dicot embryo has two cotyledons and an embryonal axis.
MHT CET-06.10.2020 Shift-I
Plant kingdom
259670
In plants growing under environmental stress condition, seeds germinate while they are on the mother plant. An example for such a condition is:
1 Wolffia
2 Brown algae
3 Rhizophora
4 Eucalyptus
Explanation:
In plants growing under environmental stress condition (such as drought, high salinity low and high temperature and light condition), seed germination occurs on the mother plant. An example of such a condition is Rhizophora which grow on mangrove vegetation.
TS EAMCET-02.05.2018 Shift-II
Plant kingdom
259671
What is the correct order stages for monosporic development of female gametophyte in angiosperms, arrange in sequence. (I) Functional megaspore (II) Free nuclear divisions (III) Embryosac (IV) Linear tetrad of megaspore (V) Megaspore mother cell
1 II, I, IV, V, III
2 I, II, IV, V, III
3 V. IV, I, II, III
4 IV, V, I, II, III
Explanation:
Monosporic development refers to the formation of a female gametophyte or embryosac from a single functional megaspore. In most flowering plants a single megaspore mother cell present at the micropylar pole of the nucleus region of the ovule undergoes meiosis to form four haploid megaspores later, out of these four megaspores only one functional megaspore are found into the female gametophyte, while the remaining three degenerate. The functional megaspore elongates along micropylar chalazal axis which is followed by mitotic division and then develops into the female gametophyte.
Intialy, the single-celled zygote divides to form a proembryo. The zygote develops inside the seed. The sequence of development proceed through histodifferentiation, cell expansion and maturation drying. As the divisions proceed, the proembryo subsequently gives rise to the globular stage embryo. The globular stage embryo gives rise to a heart-shaped embryo which finally develops into a mature embryo. The mature dicot embryo has two cotyledons and an embryonal axis.
MHT CET-06.10.2020 Shift-I
Plant kingdom
259670
In plants growing under environmental stress condition, seeds germinate while they are on the mother plant. An example for such a condition is:
1 Wolffia
2 Brown algae
3 Rhizophora
4 Eucalyptus
Explanation:
In plants growing under environmental stress condition (such as drought, high salinity low and high temperature and light condition), seed germination occurs on the mother plant. An example of such a condition is Rhizophora which grow on mangrove vegetation.
TS EAMCET-02.05.2018 Shift-II
Plant kingdom
259671
What is the correct order stages for monosporic development of female gametophyte in angiosperms, arrange in sequence. (I) Functional megaspore (II) Free nuclear divisions (III) Embryosac (IV) Linear tetrad of megaspore (V) Megaspore mother cell
1 II, I, IV, V, III
2 I, II, IV, V, III
3 V. IV, I, II, III
4 IV, V, I, II, III
Explanation:
Monosporic development refers to the formation of a female gametophyte or embryosac from a single functional megaspore. In most flowering plants a single megaspore mother cell present at the micropylar pole of the nucleus region of the ovule undergoes meiosis to form four haploid megaspores later, out of these four megaspores only one functional megaspore are found into the female gametophyte, while the remaining three degenerate. The functional megaspore elongates along micropylar chalazal axis which is followed by mitotic division and then develops into the female gametophyte.
