Adaptations of flowers for pollination

These flashcards cover the main concepts discussed in the lecture about the roles and adaptations of flowers in pollination, including the differences between various pollination methods.

What are the reproductive organs found in flowers?

The male (stamen) and female (carpel) organs.

What does the stamen produce?

Pollen grains that contain male gametes.

What is the function of pollinators in relation to flowers?

They transport pollen from an anther to a stigma.

Why is pollination by pollinators advantageous for plants?

It avoids self-pollination, promoting genetic strength and more precise transfer of pollen.

What are the two stages of the male gamete's journey to the female gamete?

First, it is carried to the stigma in a pollen grain; second, it moves through the pollen tube to the female gamete.

What is the significance of pollination to humans?

It is crucial for fertilization, fruit, and seed formation, impacting food crops.

What adaptation do flowers have for attracting insects?

Flowers have large, conspicuous petals, sweet scents, and provide rewards like nectar.

What is co-evolution in relation to flowers and pollinators?

It's the adaptation of flowers and their pollinators for mutual benefit.

How are bird-pollinated flowers different from insect-pollinated flowers?

Bird pollinated flowers are generally larger, often red, and produce more dilute nectar.

What advantages do wind-pollinated flowers have?

They produce vast amounts of light, non-sticky pollen and lack color and scent to attract pollinators.

What is one difference between pollinator and wind pollination?

Pollinators move pollen directly between plants, making pollination more efficient and less wasteful.

What feature distinguishes insect-pollinated flowers?

They often have a landing platform and nectar guides for insect attraction.

Why do wind-pollinated flowers often lack scent or bright colors?

They do not need to attract pollinators as they rely on wind for pollen dispersal.

What are the diffrent types of pollinators?

Bees, birds and primarily insects