Question

Практическая работа по биологии 6 класс сравнение цветков насекомоопыляемых и ветроопыляемых растений

Answer 1

Насекомоопыляемые цветки- имеют яркий околоцветник/ сильный аромат, нектарники с нектаром, они крупные и как правило одиночные(но это не всегда), ветроопыляемые-мелкие невзрачные цветки, пыльники на длинных свисающих тычиночных нитях,рыльца пестика широкие для улавливания пыльцы,пыльца мелкая сухая,цветут до распускания листьев,лишены аромата

Answer 2

Comparing Insect-Pollinated and Wind-Pollinated Plants

In biology, the process of pollination can occur through various mechanisms, including insect pollination and wind pollination. Let's compare the characteristics of flowers from insect-pollinated and wind-pollinated plants.

Insect-Pollinated Plants: Insect-pollinated plants have evolved specific characteristics to attract and facilitate pollination by insects. These characteristics include: - Brightly Colored Flowers: Insect-pollinated plants often have brightly colored flowers to attract insects. - Fragrance: Many insect-pollinated plants produce fragrant flowers to attract insects. - Nectar: These plants often produce nectar as a reward for visiting insects. - Pollen: The pollen of insect-pollinated plants is often sticky or spiky, making it easier for insects to carry it from one flower to another.

Wind-Pollinated Plants: Wind-pollinated plants have different characteristics that are adapted to pollination by the wind. These characteristics include: - Small, Inconspicuous Flowers: Wind-pollinated plants typically have small and inconspicuous flowers. - Lack of Fragrance: These plants often lack fragrant flowers since they do not rely on attracting insects. - Large Amounts of Pollen: Wind-pollinated plants produce large amounts of lightweight pollen to increase the chances of successful pollination by the wind. - Feathery Stigmas: The stigmas of wind-pollinated plants are often feathery to catch airborne pollen.

Differences in Pollen Grains: In addition to the visible characteristics of the flowers, the pollen grains of insect-pollinated and wind-pollinated plants also differ. - Insect-Pollinated Plants: The pollen grains of insect-pollinated plants are often sticky or spiky, allowing them to adhere to the bodies of visiting insects. - Wind-Pollinated Plants: The pollen grains of wind-pollinated plants are lightweight and produced in large quantities, as they need to be carried by the wind to reach other flowers for pollination.

These differences in flower characteristics and pollen grains reflect the specific adaptations of plants to their respective pollination mechanisms.