Reproduction in Flowering Plants: Structures and Fertilisation

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What is the shape of a typical microsporangium?

Pentagonal

Near circular (correct)

Four-sided

Triangular

How many microsporangia are present in an anther?

Four (correct)

Two

Six

Eight

What is the function of the microsporangia?

To produce seeds

To produce roots

To produce pollen grains (correct)

To produce petals

What is the shape of an anther?

Bilobed Signup and view all the answers

What is the function of the anther?

To produce pollen Signup and view all the answers

How do the microsporangia extend in the anther?

Lengthwise Signup and view all the answers

What is the result of meiosis in the MMC?

Formation of a single megaspore Signup and view all the answers

What happens to the three other megaspores in the tetrad?

They degenerate Signup and view all the answers

What is the term for pollination that occurs within the same flower?

Autogamy Signup and view all the answers

What is the term for the transfer of pollen from one flower to another flower on the same plant?

Geitonogamy Signup and view all the answers

What is the function of the female gametophyte in the life cycle of a plant?

To facilitate fertilization Signup and view all the answers

What is the purpose of the diverse structures of inflorescences, flowers, and floral parts in flowering plants?

To attract pollinators and ensure formation of fruits and seeds. Signup and view all the answers

Why do flowers exist according to the passage?

To aid in the sexual reproduction of plants. Signup and view all the answers

What is the significance of flowers in human culture?

They are used as symbols for human feelings and emotions. Signup and view all the answers

What is the focus of this chapter according to the passage?

The process of sexual reproduction in flowering plants. Signup and view all the answers

What do the rich colours and scents of flowers attract?

Pollinators such as bees and butterflies. Signup and view all the answers

What is the term used to describe flowering plants?

Angiosperms Signup and view all the answers

What is the primary purpose of storing pollen grains?

For seed banks in crop breeding programmes Signup and view all the answers

What is the term for the female reproductive part of a flower?

Pistil Signup and view all the answers

Under what conditions can pollen grains maintain viability for months?

In some members of Rosaceae, Leguminoseae, and Solanaceae Signup and view all the answers

What is the term for the process of fertilisation facilitated by pollen grains?

Fertilisation Signup and view all the answers

What is the structure that represents the female reproductive part of a flower when it consists of multiple carpels?

Syncarpous Signup and view all the answers

What is the purpose of storing pollen grains at -190°C?

To preserve its viability for extended periods Signup and view all the answers

What is the result of meiosis in plants?

Production of 8-nucleate and 7-celled embryos Signup and view all the answers

What is the function of the synergid cells?

They play an important role in guiding pollen tubes Signup and view all the answers

What is pollination in flowering plants?

The transfer of pollen grains from anther to stigma Signup and view all the answers

What is the composition of the egg apparatus?

One egg cell and two synergid cells Signup and view all the answers

What is the function of the antipodals?

They are small cells located at the chalazal end Signup and view all the answers

What is the characteristic of the gametes in flowering plants?

They are non-motile and require external agents for transfer Signup and view all the answers