Pollen Grain and Gynoecium Study in Botany

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30 Questions

What is the study of pollen grain known as?

Polynology

What is the outer surface of a pollen grain highly variable in?

Shape

What is the individual member of the pistil called?

Carpel

What are the two membranes that make up the exine of a pollen grain?

Outer thick and rough, inner thin and smooth

What is the swollen basal portion of the Pistil called?

Ovary

What are the components that compose a pollen grain?

Carbohydrate, protein, fat, water

What is the substance called that covers the exine in insect-pollinated pollengrains?

Pollenkit

What is the terminal portion of the Pistil that lies at the tip of the style called?

Stigma

What is the upward outgrowth of the Ovary seen in multicarpellary, unilocular pistils?

Style

What is the process of formation of male gametophyte from microspore called?

Microgametogenesis

What encloses the embryosac and provides nourishment to the developing embryo?

Nucellus

What connects ovules to the Placenta or Ovary wall?

Raphae

What is the narrow passage that helps in the entry of the pollentube?

Micropyle

Which structure in angiosperms consists of a vegetative cell and two male gametes?

Pollen tube

What is the female gametophyte that contains the egg apparatus, antipodial cell, and polar body called?

Embryo sac

What is the place of origin of the integument or basal swollen part of the nucellus called?

Chalaza

What is the formation of the megaspore mother cell called?

Megasporogenesis

What is the group of parenchymatous tissue that connects the ovary with the ovule called?

Placentation

In which type of ovule do the micropyle and chalaza lie on either side of the funicle?

Campylotropous

What does the term 'Syncarpous' refer to in relation to the pistil structure?

Fusion of carpels

Which type of ovule has the micropyle facing upwards with an elongated funicle showing unilateral growth?

Circinotropous

What is the defining feature of an Apocarpous pistil?

Free carpels

Which type of ovule has the micropyle near the hilum and facing downward towards the placenta?

Anatropous

What causes the Ovule to be inverted in Anatropous ovules?

Curvature of the funicle

What is the term used to describe a flower that is divided longitudinally in two similar halves in any plane passing through the center?

Actinomorphic

Where is the ovary located in a flower with perigyny?

Around all other floral parts

Which type of flower has an ovary that is below other floral parts?

Epigynous

What is the term for the formation of microspores or pollen grains inside microsporangia?

Micrsporogenesis

Which type of anther consists of 4 microsponangia in two anther lobes?

Dithecous

What type of flower has an ovary that is superior?

Hypogynous

Explore the world of pollen grains and gynoecium with this quiz, covering topics like polynology, outer surface variations, and the structure and function of the female reproductive organ. Perfect for students of botany at Gyanvikash Junior College.

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