Sexual Reproduction in Flowering Plants

Play an AI-generated podcast conversation about this lesson

What is a characteristic of the egg cell in Type 1 apomixis?

It is triploid (3n)

It is tetraploid (4n)

It is haploid (n)

It is diploid (2n) (correct)

In Type 2 apomixis, what is the origin of the nucellar cells that penetrate into the embryo sac?

They are derived from the pollen tube

They are derived from the female gametophyte

They are derived from the egg cell

They are derived from the nucellus cells (correct)

What is the term for the occurrence of more than one embryo in a seed?

Polyembryony (correct)

Apomixis

Hybridization

Fertilization

What is the advantage of producing hybrid seeds through apomixis?

It maintains the hybrid nature of the seeds Signup and view all the answers

What is the role of the nucellus cells in Type 2 apomixis?

They penetrate into the embryo sac and start dividing Signup and view all the answers

What is the result of multiple egg cells giving rise to the zygotic embryo in Type 1 apomixis?

The formation of a single zygotic embryo Signup and view all the answers

What happens to the generative cell in a 2-celled pollen during pollen-pistil interaction?

It divides to form two male gametes Signup and view all the answers

Where do the male gametes enter during fertilization?

Through the micropylar end of the embryo sac Signup and view all the answers

What is the process called when one male gamete fuses with the egg nucleus to form the zygote?

Syngamy Signup and view all the answers

What stops growing during fertilization?

The pollen tube Signup and view all the answers

What is the process of formation of zygote by the fusion of male and female gametes?

Fertilisation Signup and view all the answers

What is the other term for the fusion of one male gamete with the egg nucleus to form the zygote?

Syngamy Signup and view all the answers

What is the result of triple fusion during double fertilization?

Formation of a primary endosperm nucleus Signup and view all the answers

What type of endosperm development is characterized by the primary endosperm nucleus dividing repeatedly without cytokinesis?

Nuclear type Signup and view all the answers

Through which part of the ovule does the pollen tube enter during fertilization?

Micropyle Signup and view all the answers

What is the main source of nutrition for the embryo in the seed?

Endosperm Signup and view all the answers

What type of fertilization occurs when the pollen tube enters the ovule through the integuments?

Chalazogamy Signup and view all the answers

What is the term for the process of development of the embryo from the zygote?

Embryo development Signup and view all the answers

What is the position of the scutellum in the monocot embryo?

Towards one side of the embryonal axis Signup and view all the answers

Which part of the seed coat protects the developing embryo?

Integuments Signup and view all the answers

What is the function of the coleorhiza in the monocot embryo?

It encloses the radical and root cap Signup and view all the answers

What is the term for the hollow foliar structure that encloses the shoot apex and leaf primordia in the monocot embryo?

Coleoptile Signup and view all the answers

What is the part of the seed that is used by the embryo to grow?

Food reserves Signup and view all the answers

What is the opening through which the pollen tube enters the ovule during fertilization?

Micropyle Signup and view all the answers

What is the fate of the majority of the megaspores formed during megasporogenesis?

They degenerate, leaving only one functional megaspore Signup and view all the answers

What is the primary function of the integuments in the ovule?

To protect the ovule from external damage Signup and view all the answers

In which part of the ovule is the megaspore mother cell typically located?

Micropylar end Signup and view all the answers

What is the term for the small opening in the ovule through which the pollen tube penetrates?

Micropyle Signup and view all the answers

What is the structure that contains the female gametophyte and is located inside the nucellus?

Embryo sac Signup and view all the answers

What is the process by which a megaspore is formed from a megaspore mother cell?

Megasporogenesis Signup and view all the answers

What is the function of the endothecium in the microsporangium?

Protection and assistance in dehiscence Signup and view all the answers

What is the number of sporangia present in each microsporangium?

4 Signup and view all the answers

What is the location of the microsporangia in the anther?

At the corner of the anther Signup and view all the answers

What is the role of the tapetum in the microsporangium?

Nutrition to the developing pollen grains Signup and view all the answers

What is the process that occurs inside the sporogenous tissue at the center of each microsporangium?

Microsporogenesis Signup and view all the answers

What is the tissue that undergoes meiosis to produce gametes in the microsporangium?

Sporogenous tissue Signup and view all the answers

What is the function of the integuments in the ovule?

To protect the ovule Signup and view all the answers

Where is the embryo sac located in the ovule?

Inside the nucellus Signup and view all the answers

What is the result of meiosis II in megasporogenesis?

Formation of a megaspore tetrad Signup and view all the answers

What is the small opening in the ovule through which the pollen tube penetrates?

Micropyle Signup and view all the answers

What is the region of the ovule near the micropyle?

Micropylar end Signup and view all the answers

How many megaspores are typically functional at the end of megasporogenesis?

One Signup and view all the answers

Where is the megaspore mother cell typically located?

In the nucellus Signup and view all the answers

What is the function of the integuments in the ovule?

To protect the developing embryo Signup and view all the answers

What is the small opening in the ovule through which the pollen tube penetrates?

Micropyle Signup and view all the answers

Sexual Reproduction in Flowering Plants

Podcast Beta

Questions and Answers

What is a characteristic of the egg cell in Type 1 apomixis?

In Type 2 apomixis, what is the origin of the nucellar cells that penetrate into the embryo sac?

What is the term for the occurrence of more than one embryo in a seed?

What is the advantage of producing hybrid seeds through apomixis?

What is the role of the nucellus cells in Type 2 apomixis?

What is the result of multiple egg cells giving rise to the zygotic embryo in Type 1 apomixis?

What happens to the generative cell in a 2-celled pollen during pollen-pistil interaction?

Where do the male gametes enter during fertilization?

What is the process called when one male gamete fuses with the egg nucleus to form the zygote?

What stops growing during fertilization?

What is the process of formation of zygote by the fusion of male and female gametes?

What is the other term for the fusion of one male gamete with the egg nucleus to form the zygote?

What is the result of triple fusion during double fertilization?

What type of endosperm development is characterized by the primary endosperm nucleus dividing repeatedly without cytokinesis?

Through which part of the ovule does the pollen tube enter during fertilization?

What is the main source of nutrition for the embryo in the seed?

What type of fertilization occurs when the pollen tube enters the ovule through the integuments?

What is the term for the process of development of the embryo from the zygote?

What is the position of the scutellum in the monocot embryo?

Which part of the seed coat protects the developing embryo?

What is the function of the coleorhiza in the monocot embryo?

What is the term for the hollow foliar structure that encloses the shoot apex and leaf primordia in the monocot embryo?

What is the part of the seed that is used by the embryo to grow?

What is the opening through which the pollen tube enters the ovule during fertilization?

What is the fate of the majority of the megaspores formed during megasporogenesis?

What is the primary function of the integuments in the ovule?

In which part of the ovule is the megaspore mother cell typically located?

What is the term for the small opening in the ovule through which the pollen tube penetrates?

What is the structure that contains the female gametophyte and is located inside the nucellus?

What is the process by which a megaspore is formed from a megaspore mother cell?

What is the function of the endothecium in the microsporangium?

What is the number of sporangia present in each microsporangium?

What is the location of the microsporangia in the anther?

What is the role of the tapetum in the microsporangium?

What is the process that occurs inside the sporogenous tissue at the center of each microsporangium?

What is the tissue that undergoes meiosis to produce gametes in the microsporangium?

What is the function of the integuments in the ovule?

Where is the embryo sac located in the ovule?

What is the result of meiosis II in megasporogenesis?

What is the small opening in the ovule through which the pollen tube penetrates?

What is the region of the ovule near the micropyle?

How many megaspores are typically functional at the end of megasporogenesis?

Where is the megaspore mother cell typically located?

What is the function of the integuments in the ovule?

What is the small opening in the ovule through which the pollen tube penetrates?

What is the structure that contains the female gametophyte and is located inside the nucellus?

What is the term for the process of development of the embryo from the zygote?

What is the function of the coleorhiza in the monocot embryo?

What is the outermost layer of the microsporangium wall?

What is the function of the endothecium in the microsporangium?

What is the innermost layer of the microsporangium wall?

How many sporangia are present in each microsporangium?

Which tissue undergoes meiosis to produce gametes in the microsporangium?

Where does Microsporogenesis occur?

More Quizzes Like This

Apomixis

Apomixis

Fruit Classification and Apomixis

Apomixis and Asexual Reproduction in Plants Quiz