Sexual and Human Reproduction: Stamen and Pollen Grain

What is the terminal structure of a stamen called?

Petal

Filament

Anther (correct)

Thalamus

If you were to collect a stamen from ten different flowers, what would you observe regarding size?

Consistent size in all stamens

Large variation in size (correct)

No variation in size

Slight variation in size

In a typical angiosperm anther, how many theca does each lobe have?

Four theca (correct)

Three theca

One theca

Five theca

What distinguishes the transverse section of an anther?

Tetragonal structure Signup and view all the answers

What do microsporangia develop into?

Pollen sacs Signup and view all the answers

Where are pollen grains packed in the anther?

Microsporangia Signup and view all the answers

What is the main function of the outer three wall layers of a microsporangium?

Provide protection and assist in pollen release Signup and view all the answers

Which wall layer of a microsporangium nourishes the developing pollen grains?

Tapetum Signup and view all the answers

How do tapetal cells become bi-nucleate?

Possessing more than one nucleus initially Signup and view all the answers

What occupies the centre of each microsporangium when the anther is young?

Sporogenous tissue Signup and view all the answers

What process occurs as the anther develops in microsporogenesis?

Meiotic divisions of sporogenous tissue cells Signup and view all the answers

Sexual and Human Reproduction: Stamen and Pollen Grain

Questions and Answers